[Martin Mathieson <martin.mathieson@xxxxxxxxxxxx>]

Aisling wrote:

> Hello Martin,
>
> Many thanks for the reply and the help. You've cleared a few of my
> queries and I now understand where the LSR value is derived from (Thank
> you) and I have made sure that RTCP is captured in both directions (I
> attach a capture file as an example) - We just have two more queries
> which I hope you don't mind helping us with:
>
> To calculate the delay the formula A-LSR-DLSR is used. A simple drawing
> is usually provided in examples
>
> Sender                receiver
> |                        |
> |  SR: NTP timestamp     |
> | ---------------->      |
> |                        |
> |                        |  DLSR
> |                        | 
> |                        | 
> |  RR:LSR, DLSR          |
> A|  <----------------     |
> |                        |
> |                        |                       
> |                        |
> |                        |
>
>
> This looks very simple and I understand this. My problems are this:
>
> 1) This diagram is too simplistic because in reality the packet going
> from sender to receiver would be a compound packet (CP1)containing a SR
> AND RR (not just a SR as shown here) and the return packet from the
> receiver to the sender would also be a compound packet (CP2) with SR and
> RR. Therefore given the capture file, would I simply take the LSR and
> DLSR values from the receiver report in the second compound packet and
> the timestamp on the sender side for the A value? i.e. (ignore the RR in
> the CP1 and the SR in CP2?)
>
>  
The 'Source 1' information within the same compound packet should be 
identical, so I wouldn't worry about this.
Note that the calculation done in ethereal couldn't distinguish between 
multiple Sources (e.g. audio + video that appear as 'Source 1' and 
'Source 2'), but I've never seen this in practice.

> 2) In this diagram we know who the sender and receiver are, however it
> is my understanding that in a two way phone call either party can be the
> sender or receiver depending on who's speaking (so really its nothing
> got to do with who initiated the call). You will see from the capture
> file that phone B (157.190.70.65) sends a RTCP compound packet to phone
> A (157.190.74.153)first even though phone A initiated the call.
> Therefore at the beginning does this make phone b the sender and phone A
> the receiver? And if this is the case must I check the source and
> destination fields every time first before carrying out the delay
> calculation to figure out who is the sender and who is the receiver?
>
>  
The sender is any side that has sent RTP packets in the period since its 
last SR or RR, so yes, you must take into consideration the direction of 
the RTCP packet (as the Ethereal calculation does).  Both sides are 
sending and receiving Sender Reports from the other side.  As well as 
looking at the direction, the code in packet-rtcp.c stores in 
conversation data the last timestamp, and only does the calculation if 
the received LSR field matches what was last sent out.

I find capture files much easier to browse than the text output below, 
but I note that the DLSR is 1 in every case.  I haven't checked to see 
if there are sensible/matching entries in the LSR fields, but it does 
look as if the client/stack being used for your tests isn't working.  A 
useful addition to packet-rtcp.c might be to add the generated field 
back to the packet referred to in the LSR even when no calculation is 
being done...

I've seen round-trips being calculated successfully using different 
stacks at around the time I implemented this calculation, but I don't 
remember which clients or test equipment/applications I was using at the 
time.  Please consider experimenting with other clients.  If I get time 
(not this week), I'll dig out a minimal capture showing a calculation 
that can be done and upload it to the wiki with some explanation - 
you're not the first person to be confused by this stuff.

Regards,
Martin


> Many thanks for the advice so far - It is much appreciated,
> Aisling.
>
> -----Original Message-----
> From: ethereal-users-bounces@xxxxxxxxxxxx
> [mailto:ethereal-users-bounces@xxxxxxxxxxxx] On Behalf Of Martin
> Mathieson
> Sent: 27 March 2006 11:14
> To: Ethereal user support
> Subject: Re: [Ethereal-users] RTCP for VoIP QoS
>
> Aisling,  I've written some answers below prefixed by [Martin].
>
> Hello Martin,
>
> My name is Aisling and I am helping David Grau with his project (his
> project as part of an undergraduate degree but this also interests me
> as part of my postgraduate degree).
>
> I have read rfc 3550 with particular emphasis on the part detailing
> how the round trip time (RTT) should be calculated.  The formula
> "A-DLSR-LSR" is provided and an example "46864.500 - 5.250 -
> 46853.125 = 6.125 seconds" is given. We are working from a tethereal
> capture file - This was running on the same pc as one of the
> softphones involved in the call but as the two softphones calling
> each other are on the same LAN segment we should have captured all
> that RTCP is captured in both directions (I
> attach a capture file as an example) - We just have two more queries
> which I hope you don't mind helping us with:the necessary RTCP sender and receiver reports anyway.I have attached
> the sample capture file.
>
> [Martin]  Note that within the same LAN segment you are unlikely to see
> any
> interesting roundtrip delays.  You can set the RTCP preference 'Minimum
> rountrip calculations to report'
> to 0 milliseconds.
>
>
>
> Myself and David are not clear on a few things:
>
> 1) The A field is when the receiver report block is received. Is this
> referring to the NTP timestamp? I am struggling to identify this from
> the tethereal capture (perhaps the capture format is slightly
> non-standard?)and if you could point this out from the attached
> capture file we would greatly appreciate it.
>
> [Martin]  'A' seems to be the middle 32 bits from the NTP timestamp,
> whose units would be 1/65536th seconds. 
> All 3 quantities in the formula you quote are in these units, though
> they are converted into seconds to make it easier to read.
>
>
>
> 2)The LSR field is said to be the middle 32 bits of the NTP timestamp
> and the NTP timestamp is made up of the MSW and LSW. So if the
> figures are MSW=3350115113 and LSW=493921239 I still fail to
> understand why the LSR=3005816176...this is based on the figures from
> the attach capture file.
>
> [Martin]  MSW and LSW are being displayed as decimals, it is easier to
> look at them as hex.
> MSW = 0xC7AEB329,   LSW = 0x0x1D70A3D7
>
> The middle word in this case from this would be 0xB3291D70 = 3005816176
>
> However, remember that the LSR in a frame refers to the timestamp seen
> in a message seen in the opposite direction
> (i.e. in a received message it refers to the middle-bytes from the time
> of a frame you previously sent).
>
>
>
> 3)the DLSR does appear to be 1 for all captures but as you said this
> could be for the reasons that you described before.
>
> [Martin] As in the other example I looked at, there appears to be only
> RTP/RTCP in one direction, so these values looke made up / default to
> me.
> You maybe need to make sure that someone is speaking in both directions
> to that RTP and SRs are sent.  No calculation can be done until a SR in
> one direction
> refers to an SR in the previous direction (by matching its LSR and
> having a sensible DLSR filled in).
>
>
>
> 4)Based on the above points and the attached capture file could you
> give an example with figures (from the file) of using A-DLSR-LSR?
>
> [Martin]  Sorry, I don't have ready access to my old capture collection
> at the moment.  I realise that the way this calculation is done is a bit
> complex.
> I notice that RFC 3611 allows non-senders to calculate roundtrip delays,
> but I've never seen it used in a real client.
>
> I really do hope this helps you.
> Best Regards,
> Martin
>
>
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>
> ------------------------------------------------------------------------
>
> Frame 209 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:16:49.283322000
>    Time delta from previous packet: 0.017324000 seconds
>    Time since reference or first frame: 6.849143000 seconds
>    Frame Number: 209
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (DellPcba_72:f2:26)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x03e0 (992)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x6b46 (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x6367 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447226
>    Timestamp, LSW: 3822520893
>    RTP timestamp: 0
>    Sender's packet count: 0
>    Sender's octet count: 0
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 0
>            Sequence number cycles count: 0
>            Highest sequence number received: 0
>        Interarrival jitter: 0
>        Last SR timestamp: 1224401879
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 0
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 0
>            Sequence number cycles count: 0
>            Highest sequence number received: 0
>        Interarrival jitter: 0
>        Last SR timestamp: 1224401879
>        Delay since last SR timestamp: 1
>
> Frame 216 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:16:49.336164000
>    Time delta from previous packet: 0.022169000 seconds
>    Time since reference or first frame: 6.901985000 seconds
>    Frame Number: 216
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (DellPcba_72:f2:26)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x7a9b (31387)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xf38a (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x9d78 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447009
>    Timestamp, LSW: 1421634175
>    RTP timestamp: 48000
>    Sender's packet count: 2
>    Sender's octet count: 320
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 131074
>            Sequence number cycles count: 2
>            Highest sequence number received: 2
>        Interarrival jitter: 0
>        Last SR timestamp: 1210143932
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 3
>            Sequence number cycles count: 0
>            Highest sequence number received: 3
>        Interarrival jitter: 0
>        Last SR timestamp: 1210143932
>        Delay since last SR timestamp: 1
>
> Frame 219 (160 bytes on wire, 160 bytes captured)
>    Arrival Time: Mar 27, 2006 12:16:49.345059000
>    Time delta from previous packet: 0.008542000 seconds
>    Time since reference or first frame: 6.910880000 seconds
>    Frame Number: 219
>    Packet Length: 160 bytes
>    Capture Length: 160 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (DellPcba_72:f2:26)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 146
>    Identification: 0x03e4 (996)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x6b20 (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 126
>    Checksum: 0x89c2 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447226
>    Timestamp, LSW: 4093103833
>    RTP timestamp: 480
>    Sender's packet count: 3
>    Sender's octet count: 480
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 196611
>            Sequence number cycles count: 3
>            Highest sequence number received: 3
>        Interarrival jitter: 0
>        Last SR timestamp: 1224406007
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 4
>            Sequence number cycles count: 0
>            Highest sequence number received: 4
>        Interarrival jitter: 2
>        Last SR timestamp: 1224406007
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Source count: 1
>    Packet type: Source description (202)
>    Length: 7
>    Chunk 1, SSRC/CSRC 2384954224
>        Identifier: 2384954224
>        SDES items
>            Type: CNAME (user and domain) (1)
>            Length: 21
>            Text: unknown@157.190.70.65
>
> Frame 226 (160 bytes on wire, 160 bytes captured)
>    Arrival Time: Mar 27, 2006 12:16:49.397302000
>    Time delta from previous packet: 0.020662000 seconds
>    Time since reference or first frame: 6.963123000 seconds
>    Frame Number: 226
>    Packet Length: 160 bytes
>    Capture Length: 160 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (DellPcba_72:f2:26)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 146
>    Identification: 0x7aa0 (31392)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xf363 (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 126
>    Checksum: 0x71ea (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447009
>    Timestamp, LSW: 1679332213
>    RTP timestamp: 48640
>    Sender's packet count: 6
>    Sender's octet count: 960
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 393222
>            Sequence number cycles count: 6
>            Highest sequence number received: 6
>        Interarrival jitter: 0
>        Last SR timestamp: 1210147864
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 6
>            Sequence number cycles count: 0
>            Highest sequence number received: 6
>        Interarrival jitter: 1
>        Last SR timestamp: 1210147864
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Source count: 1
>    Packet type: Source description (202)
>    Length: 7
>    Chunk 1, SSRC/CSRC 3636351121
>        Identifier: 3636351121
>        SDES items
>            Type: CNAME (user and domain) (1)
>            Length: 22
>            Text: unknown@157.190.74.153
>
> Frame 796 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:16:54.313362000
>    Time delta from previous packet: 0.015229000 seconds
>    Time since reference or first frame: 11.879183000 seconds
>    Frame Number: 796
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x04e1 (1249)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x6a45 (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x42d7 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447231
>    Timestamp, LSW: 3955664880
>    RTP timestamp: 40640
>    Sender's packet count: 254
>    Sender's octet count: 40640
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 16646398
>            Sequence number cycles count: 254
>            Highest sequence number received: 254
>        Interarrival jitter: 0
>        Last SR timestamp: 1224731590
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 255
>            Sequence number cycles count: 0
>            Highest sequence number received: 255
>        Interarrival jitter: 54
>        Last SR timestamp: 1224731590
>        Delay since last SR timestamp: 1
>
> Frame 802 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:16:54.358230000
>    Time delta from previous packet: 0.013425000 seconds
>    Time since reference or first frame: 11.924051000 seconds
>    Frame Number: 802
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x7ba0 (31648)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xf285 (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0xccb2 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447014
>    Timestamp, LSW: 1537598292
>    RTP timestamp: 88800
>    Sender's packet count: 257
>    Sender's octet count: 41120
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 16843009
>            Sequence number cycles count: 257
>            Highest sequence number received: 257
>        Interarrival jitter: 0
>        Last SR timestamp: 1210473381
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 257
>            Sequence number cycles count: 0
>            Highest sequence number received: 257
>        Interarrival jitter: 106
>        Last SR timestamp: 1210473381
>        Delay since last SR timestamp: 1
>
> Frame 1438 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:16:59.365180000
>    Time delta from previous packet: 0.020041000 seconds
>    Time since reference or first frame: 16.931001000 seconds
>    Frame Number: 1438
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x7ca0 (31904)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xf185 (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0xc605 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447019
>    Timestamp, LSW: 1567663063
>    RTP timestamp: 129280
>    Sender's packet count: 510
>    Sender's octet count: 81600
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 33423870
>            Sequence number cycles count: 510
>            Highest sequence number received: 510
>        Interarrival jitter: 0
>        Last SR timestamp: 1210801520
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 510
>            Sequence number cycles count: 0
>            Highest sequence number received: 510
>        Interarrival jitter: 239
>        Last SR timestamp: 1210801520
>        Delay since last SR timestamp: 1
>
> Frame 1440 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:16:59.376260000
>    Time delta from previous packet: 0.010698000 seconds
>    Time since reference or first frame: 16.942081000 seconds
>    Frame Number: 1440
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x05e3 (1507)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x6943 (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x0979 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447236
>    Timestamp, LSW: 4226247819
>    RTP timestamp: 81600
>    Sender's packet count: 510
>    Sender's octet count: 81600
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 33423870
>            Sequence number cycles count: 510
>            Highest sequence number received: 510
>        Interarrival jitter: 0
>        Last SR timestamp: 1225063399
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 511
>            Sequence number cycles count: 0
>            Highest sequence number received: 511
>        Interarrival jitter: 134
>        Last SR timestamp: 1225063399
>        Delay since last SR timestamp: 1
>
> Frame 1913 (160 bytes on wire, 160 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:03.406805000
>    Time delta from previous packet: 0.005582000 seconds
>    Time since reference or first frame: 20.972626000 seconds
>    Frame Number: 1913
>    Packet Length: 160 bytes
>    Capture Length: 160 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 146
>    Identification: 0x06b1 (1713)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x6853 (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 126
>    Checksum: 0x9897 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447241
>    Timestamp, LSW: 64424509
>    RTP timestamp: 114400
>    Sender's packet count: 715
>    Sender's octet count: 114400
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 46858955
>            Sequence number cycles count: 715
>            Highest sequence number received: 715
>        Interarrival jitter: 0
>        Last SR timestamp: 1225327575
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 716
>            Sequence number cycles count: 0
>            Highest sequence number received: 716
>        Interarrival jitter: 220
>        Last SR timestamp: 1225327575
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Source count: 1
>    Packet type: Source description (202)
>    Length: 7
>    Chunk 1, SSRC/CSRC 2384954224
>        Identifier: 2384954224
>        SDES items
>            Type: CNAME (user and domain) (1)
>            Length: 21
>            Text: unknown@157.190.70.65
>
> Frame 1917 (160 bytes on wire, 160 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:03.441161000
>    Time delta from previous packet: 0.002914000 seconds
>    Time since reference or first frame: 21.006982000 seconds
>    Frame Number: 1917
>    Packet Length: 160 bytes
>    Capture Length: 160 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 146
>    Identification: 0x7d6f (32111)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xf094 (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 126
>    Checksum: 0xfa9e (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447023
>    Timestamp, LSW: 1894080578
>    RTP timestamp: 162240
>    Sender's packet count: 716
>    Sender's octet count: 114560
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 46924492
>            Sequence number cycles count: 716
>            Highest sequence number received: 716
>        Interarrival jitter: 0
>        Last SR timestamp: 1211068645
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 718
>            Sequence number cycles count: 0
>            Highest sequence number received: 718
>        Interarrival jitter: 337
>        Last SR timestamp: 1211068645
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Source count: 1
>    Packet type: Source description (202)
>    Length: 7
>    Chunk 1, SSRC/CSRC 3636351121
>        Identifier: 3636351121
>        SDES items
>            Type: CNAME (user and domain) (1)
>            Length: 22
>            Text: unknown@157.190.74.153
>
> Frame 2017 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:04.406654000
>    Time delta from previous packet: 0.015315000 seconds
>    Time since reference or first frame: 21.972475000 seconds
>    Frame Number: 2017
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x06e4 (1764)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x6842 (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x10c3 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447242
>    Timestamp, LSW: 64424509
>    RTP timestamp: 122400
>    Sender's packet count: 765
>    Sender's octet count: 122400
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 50135805
>            Sequence number cycles count: 765
>            Highest sequence number received: 765
>        Interarrival jitter: 0
>        Last SR timestamp: 1225393111
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 766
>            Sequence number cycles count: 0
>            Highest sequence number received: 766
>        Interarrival jitter: 238
>        Last SR timestamp: 1225393111
>        Delay since last SR timestamp: 1
>
> Frame 2020 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:04.411275000
>    Time delta from previous packet: 0.004179000 seconds
>    Time since reference or first frame: 21.977096000 seconds
>    Frame Number: 2020
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x7da3 (32163)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xf082 (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x2c3f (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447024
>    Timestamp, LSW: 1769526526
>    RTP timestamp: 170240
>    Sender's packet count: 766
>    Sender's octet count: 122560
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 50201342
>            Sequence number cycles count: 766
>            Highest sequence number received: 766
>        Interarrival jitter: 0
>        Last SR timestamp: 1211132280
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 767
>            Sequence number cycles count: 0
>            Highest sequence number received: 767
>        Interarrival jitter: 357
>        Last SR timestamp: 1211132280
>        Delay since last SR timestamp: 1
>
> Frame 2529 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:09.425386000
>    Time delta from previous packet: 0.018607000 seconds
>    Time since reference or first frame: 26.991207000 seconds
>    Frame Number: 2529
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x7ea2 (32418)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xef83 (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x9a51 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447029
>    Timestamp, LSW: 1803886264
>    RTP timestamp: 210880
>    Sender's packet count: 1020
>    Sender's octet count: 163200
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 66847740
>            Sequence number cycles count: 1020
>            Highest sequence number received: 1020
>        Interarrival jitter: 0
>        Last SR timestamp: 1211460485
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1020
>            Sequence number cycles count: 0
>            Highest sequence number received: 1020
>        Interarrival jitter: 491
>        Last SR timestamp: 1211460485
>        Delay since last SR timestamp: 1
>
> Frame 2535 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:09.468871000
>    Time delta from previous packet: 0.003303000 seconds
>    Time since reference or first frame: 27.034692000 seconds
>    Frame Number: 2535
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x07e6 (2022)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x6740 (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0xd614 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447247
>    Timestamp, LSW: 335007449
>    RTP timestamp: 163520
>    Sender's packet count: 1022
>    Sender's octet count: 163520
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 66978814
>            Sequence number cycles count: 1022
>            Highest sequence number received: 1022
>        Interarrival jitter: 0
>        Last SR timestamp: 1225724919
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1023
>            Sequence number cycles count: 0
>            Highest sequence number received: 1023
>        Interarrival jitter: 331
>        Last SR timestamp: 1225724919
>        Delay since last SR timestamp: 1
>
> Frame 3050 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:14.461332000
>    Time delta from previous packet: 0.019937000 seconds
>    Time since reference or first frame: 32.027153000 seconds
>    Frame Number: 3050
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x7fa4 (32676)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xee81 (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x66fc (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447034
>    Timestamp, LSW: 1962800054
>    RTP timestamp: 251520
>    Sender's packet count: 1274
>    Sender's octet count: 203840
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 83494138
>            Sequence number cycles count: 1274
>            Highest sequence number received: 1274
>        Interarrival jitter: 0
>        Last SR timestamp: 1211790589
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1274
>            Sequence number cycles count: 0
>            Highest sequence number received: 1274
>        Interarrival jitter: 593
>        Last SR timestamp: 1211790589
>        Delay since last SR timestamp: 1
>
> Frame 3055 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:14.499930000
>    Time delta from previous packet: 0.018482000 seconds
>    Time since reference or first frame: 32.065751000 seconds
>    Frame Number: 3055
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x08e7 (2279)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x663f (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0xded4 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447252
>    Timestamp, LSW: 468151435
>    RTP timestamp: 204160
>    Sender's packet count: 1276
>    Sender's octet count: 204160
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 83625212
>            Sequence number cycles count: 1276
>            Highest sequence number received: 1276
>        Interarrival jitter: 0
>        Last SR timestamp: 1226054631
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1276
>            Sequence number cycles count: 0
>            Highest sequence number received: 1276
>        Interarrival jitter: 386
>        Last SR timestamp: 1226054631
>        Delay since last SR timestamp: 1
>
> Frame 3356 (160 bytes on wire, 160 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:17.437223000
>    Time delta from previous packet: 0.006249000 seconds
>    Time since reference or first frame: 35.003044000 seconds
>    Frame Number: 3356
>    Packet Length: 160 bytes
>    Capture Length: 160 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 146
>    Identification: 0x097d (2429)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x6587 (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 126
>    Checksum: 0x5f84 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447255
>    Timestamp, LSW: 197568496
>    RTP timestamp: 228000
>    Sender's packet count: 1425
>    Sender's octet count: 228000
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 93390225
>            Sequence number cycles count: 1425
>            Highest sequence number received: 1425
>        Interarrival jitter: 0
>        Last SR timestamp: 1226247110
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1426
>            Sequence number cycles count: 0
>            Highest sequence number received: 1426
>        Interarrival jitter: 425
>        Last SR timestamp: 1226247110
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Source count: 1
>    Packet type: Source description (202)
>    Length: 7
>    Chunk 1, SSRC/CSRC 2384954224
>        Identifier: 2384954224
>        SDES items
>            Type: CNAME (user and domain) (1)
>            Length: 21
>            Text: unknown@157.190.70.65
>
> Frame 3360 (160 bytes on wire, 160 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:17.457907000
>    Time delta from previous packet: 0.006875000 seconds
>    Time since reference or first frame: 35.023728000 seconds
>    Frame Number: 3360
>    Packet Length: 160 bytes
>    Capture Length: 160 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 146
>    Identification: 0x803e (32830)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xedc5 (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 126
>    Checksum: 0xadab (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447037
>    Timestamp, LSW: 1979979923
>    RTP timestamp: 276000
>    Sender's packet count: 1427
>    Sender's octet count: 228320
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 93521299
>            Sequence number cycles count: 1427
>            Highest sequence number received: 1427
>        Interarrival jitter: 0
>        Last SR timestamp: 1211987460
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1427
>            Sequence number cycles count: 0
>            Highest sequence number received: 1427
>        Interarrival jitter: 655
>        Last SR timestamp: 1211987460
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Source count: 1
>    Packet type: Source description (202)
>    Length: 7
>    Chunk 1, SSRC/CSRC 3636351121
>        Identifier: 3636351121
>        SDES items
>            Type: CNAME (user and domain) (1)
>            Length: 22
>            Text: unknown@157.190.74.153
>
> Frame 3569 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:19.497402000
>    Time delta from previous packet: 0.020006000 seconds
>    Time since reference or first frame: 37.063223000 seconds
>    Frame Number: 3569
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x80a7 (32935)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xed7e (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x311a (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447039
>    Timestamp, LSW: 2121713844
>    RTP timestamp: 292480
>    Sender's packet count: 1530
>    Sender's octet count: 244800
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 100271610
>            Sequence number cycles count: 1530
>            Highest sequence number received: 1530
>        Interarrival jitter: 0
>        Last SR timestamp: 1212120694
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1530
>            Sequence number cycles count: 0
>            Highest sequence number received: 1530
>        Interarrival jitter: 698
>        Last SR timestamp: 1212120694
>        Delay since last SR timestamp: 1
>
> Frame 3573 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:19.530866000
>    Time delta from previous packet: 0.013173000 seconds
>    Time since reference or first frame: 37.096687000 seconds
>    Frame Number: 3573
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x09e8 (2536)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x653e (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0xe642 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447257
>    Timestamp, LSW: 601295421
>    RTP timestamp: 244960
>    Sender's packet count: 1531
>    Sender's octet count: 244960
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 100337147
>            Sequence number cycles count: 1531
>            Highest sequence number received: 1531
>        Interarrival jitter: 0
>        Last SR timestamp: 1226384343
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1532
>            Sequence number cycles count: 0
>            Highest sequence number received: 1532
>        Interarrival jitter: 453
>        Last SR timestamp: 1226384343
>        Delay since last SR timestamp: 1
>
> Frame 4080 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:24.519414000
>    Time delta from previous packet: 0.019943000 seconds
>    Time since reference or first frame: 42.085235000 seconds
>    Frame Number: 4080
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:0d:56:72:f2:26, Dst: 00:05:5f:c8:2c:0a
>    Destination: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Source: 00:0d:56:72:f2:26 (157.190.74.153)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.74.153 (157.190.74.153), Dst Addr: 157.190.70.65 (157.190.70.65)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x81a7 (33191)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 128
>    Protocol: UDP (0x11)
>    Header checksum: 0xec7e (correct)
>    Source: 157.190.74.153 (157.190.74.153)
>    Destination: 157.190.70.65 (157.190.70.65)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0x6155 (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 3636351121
>    Timestamp, MSW: 3352447044
>    Timestamp, LSW: 2237677961
>    RTP timestamp: 333120
>    Sender's packet count: 1784
>    Sender's octet count: 285440
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 116918008
>            Sequence number cycles count: 1784
>            Highest sequence number received: 1784
>        Interarrival jitter: 0
>        Last SR timestamp: 1212450144
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 208)
>        Setup frame: 208
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 3636351121
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1784
>            Sequence number cycles count: 0
>            Highest sequence number received: 1784
>        Interarrival jitter: 868
>        Last SR timestamp: 1212450144
>        Delay since last SR timestamp: 1
>
> Frame 4088 (126 bytes on wire, 126 bytes captured)
>    Arrival Time: Mar 27, 2006 12:17:24.593092000
>    Time delta from previous packet: 0.013419000 seconds
>    Time since reference or first frame: 42.158913000 seconds
>    Frame Number: 4088
>    Packet Length: 126 bytes
>    Capture Length: 126 bytes
> Ethernet II, Src: 00:05:5f:c8:2c:0a, Dst: 00:0d:56:72:f2:26
>    Destination: 00:0d:56:72:f2:26 (157.190.74.153)
>    Source: 00:05:5f:c8:2c:0a (157.190.74.1)
>    Type: IP (0x0800)
> Internet Protocol, Src Addr: 157.190.70.65 (157.190.70.65), Dst Addr: 157.190.74.153 (157.190.74.153)
>    Version: 4
>    Header length: 20 bytes
>    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
>        0000 00.. = Differentiated Services Codepoint: Default (0x00)
>        .... ..0. = ECN-Capable Transport (ECT): 0
>        .... ...0 = ECN-CE: 0
>    Total Length: 112
>    Identification: 0x0ae9 (2793)
>    Flags: 0x00
>        0... = Reserved bit: Not set
>        .0.. = Don't fragment: Not set
>        ..0. = More fragments: Not set
>    Fragment offset: 0
>    Time to live: 127
>    Protocol: UDP (0x11)
>    Header checksum: 0x643d (correct)
>    Source: 157.190.70.65 (157.190.70.65)
>    Destination: 157.190.74.153 (157.190.74.153)
> User Datagram Protocol, Src Port: 8001 (8001), Dst Port: 8001 (8001)
>    Source port: 8001 (8001)
>    Destination port: 8001 (8001)
>    Length: 92
>    Checksum: 0xacbd (correct)
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Sender Report (200)
>    Length: 12
>    Sender SSRC: 2384954224
>    Timestamp, MSW: 3352447262
>    Timestamp, LSW: 871878361
>    RTP timestamp: 285920
>    Sender's packet count: 1787
>    Sender's octet count: 285920
>    Source 1
>        Identifier: 2384954224
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 117114619
>            Sequence number cycles count: 1787
>            Highest sequence number received: 1787
>        Interarrival jitter: 0
>        Last SR timestamp: 1226716151
>        Delay since last SR timestamp: 1
> Real-time Transport Control Protocol
>    Stream setup by SDP (frame 73)
>        Setup frame: 73
>        Setup Method: SDP
>    10.. .... = Version: RFC 1889 Version (2)
>    ..0. .... = Padding: False
>    ...0 0001 = Reception report count: 1
>    Packet type: Receiver Report (201)
>    Length: 7
>    Sender SSRC: 2384954224
>    Source 1
>        Identifier: 3636351121
>        SSRC contents
>            Fraction lost: 0 / 256
>            Cumulative number of packets lost: 0
>        Extended highest sequence number received: 1788
>            Sequence number cycles count: 0
>            Highest sequence number received: 1788
>        Interarrival jitter: 573
>        Last SR timestamp: 1226716151
>        Delay since last SR timestamp: 1
>
>  
>
> ------------------------------------------------------------------------
>
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>