This looks like its a timestamp rollover maybe.. in other places this happens, whats the timestamp before and after?

in this case, before: 32320, after: 480 (marker bit set).

Mike

On Sep 26, 2013, at 4:52 PM, D D <tru083@yahoo.com> wrote:

Hi,

I have an example of a wrong timestamp below.  It begins in packet 3563.  What do you think?

Thanks,
David


No.     Time            Source                src port Destination           dst port Protocol Info                                                            New Column
   3505 13:39:29.130487 10.1.1.226            22776    10.1.1.1              18384    RTP      PT=ITU-T G.711 PCMU, SSRC=0x7D5DC9C, Seq=16396, Time=32000      214

Frame 3505: 214 bytes on wire (1712 bits), 214 bytes captured (1712 bits)
    WTAP_ENCAP: 1
    Arrival Time: Sep 24, 2013 13:39:29.130487000 CDT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1380047969.130487000 seconds
    [Time delta from previous captured frame: 0.002441000 seconds]
    [Time delta from previous displayed frame: 0.020005000 seconds]
    [Time since reference or first frame: 30.185993000 seconds]
    Frame Number: 3505
    Frame Length: 214 bytes (1712 bits)
    Capture Length: 214 bytes (1712 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ip:udp:rtp]
    [Coloring Rule Name: UDP]
    [Coloring Rule String: udp]
Ethernet II, Src: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a), Dst: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
    Destination: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        Address: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        Address: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IP (0x0800)
Internet Protocol Version 4, Src: 10.1.1.226 (10.1.1.226), Dst: 10.1.1.1 (10.1.1.1)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
    Total Length: 200
    Identification: 0x0000 (0)
    Flags: 0x02 (Don't Fragment)
        0... .... = Reserved bit: Not set
        .1.. .... = Don't fragment: Set
        ..0. .... = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x2341 [correct]
        [Good: True]
        [Bad: False]
    Source: 10.1.1.226 (10.1.1.226)
    Destination: 10.1.1.1 (10.1.1.1)
User Datagram Protocol, Src Port: 22776 (22776), Dst Port: 18384 (18384)
    Source port: 22776 (22776)
    Destination port: 18384 (18384)
    Length: 180
    Checksum: 0x17aa [validation disabled]
        [Good Checksum: False]
        [Bad Checksum: False]
Real-Time Transport Protocol
    [Stream setup by SDP (frame 2754)]
        [Setup frame: 2754]
        [Setup Method: SDP]
    10.. .... = Version: RFC 1889 Version (2)
    ..0. .... = Padding: False
    ...0 .... = Extension: False
    .... 0000 = Contributing source identifiers count: 0
    0... .... = Marker: False
    Payload type: ITU-T G.711 PCMU (0)
    Sequence number: 16396
    [Extended sequence number: 81932]
    Timestamp: 32000
    Synchronization Source identifier: 0x07d5dc9c (131456156)
    Payload: ffeeebf2776c6c79f0ebee7d6d6b74f5ebedfb6f6b6ffbed...

No.     Time            Source                src port Destination           dst port Protocol Info                                                            New Column
   3509 13:39:29.150492 10.1.1.226            22776    10.1.1.1              18384    RTP      PT=ITU-T G.711 PCMU, SSRC=0x7D5DC9C, Seq=16397, Time=32160      214

Frame 3509: 214 bytes on wire (1712 bits), 214 bytes captured (1712 bits)
    WTAP_ENCAP: 1
    Arrival Time: Sep 24, 2013 13:39:29.150492000 CDT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1380047969.150492000 seconds
    [Time delta from previous captured frame: 0.002365000 seconds]
    [Time delta from previous displayed frame: 0.020005000 seconds]
    [Time since reference or first frame: 30.205998000 seconds]
    Frame Number: 3509
    Frame Length: 214 bytes (1712 bits)
    Capture Length: 214 bytes (1712 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ip:udp:rtp]
    [Coloring Rule Name: UDP]
    [Coloring Rule String: udp]
Ethernet II, Src: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a), Dst: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
    Destination: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        Address: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        Address: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IP (0x0800)
Internet Protocol Version 4, Src: 10.1.1.226 (10.1.1.226), Dst: 10.1.1.1 (10.1.1.1)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
    Total Length: 200
    Identification: 0x0000 (0)
    Flags: 0x02 (Don't Fragment)
        0... .... = Reserved bit: Not set
        .1.. .... = Don't fragment: Set
        ..0. .... = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x2341 [correct]
        [Good: True]
        [Bad: False]
    Source: 10.1.1.226 (10.1.1.226)
    Destination: 10.1.1.1 (10.1.1.1)
User Datagram Protocol, Src Port: 22776 (22776), Dst Port: 18384 (18384)
    Source port: 22776 (22776)
    Destination port: 18384 (18384)
    Length: 180
    Checksum: 0x17aa [validation disabled]
        [Good Checksum: False]
        [Bad Checksum: False]
Real-Time Transport Protocol
    [Stream setup by SDP (frame 2754)]
        [Setup frame: 2754]
        [Setup Method: SDP]
    10.. .... = Version: RFC 1889 Version (2)
    ..0. .... = Padding: False
    ...0 .... = Extension: False
    .... 0000 = Contributing source identifiers count: 0
    0... .... = Marker: False
    Payload type: ITU-T G.711 PCMU (0)
    Sequence number: 16397
    [Extended sequence number: 81933]
    Timestamp: 32160
    Synchronization Source identifier: 0x07d5dc9c (131456156)
    Payload: fff0edf4796e6e7af3edf17d6f6e76f7eeeffc726d72fcef...

No.     Time            Source                src port Destination           dst port Protocol Info                                                            New Column
   3513 13:39:29.170502 10.1.1.226            22776    10.1.1.1              18384    RTP      PT=ITU-T G.711 PCMU, SSRC=0x7D5DC9C, Seq=16398, Time=32320      214

Frame 3513: 214 bytes on wire (1712 bits), 214 bytes captured (1712 bits)
    WTAP_ENCAP: 1
    Arrival Time: Sep 24, 2013 13:39:29.170502000 CDT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1380047969.170502000 seconds
    [Time delta from previous captured frame: 0.002428000 seconds]
    [Time delta from previous displayed frame: 0.020010000 seconds]
    [Time since reference or first frame: 30.226008000 seconds]
    Frame Number: 3513
    Frame Length: 214 bytes (1712 bits)
    Capture Length: 214 bytes (1712 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ip:udp:rtp]
    [Coloring Rule Name: UDP]
    [Coloring Rule String: udp]
Ethernet II, Src: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a), Dst: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
    Destination: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        Address: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        Address: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IP (0x0800)
Internet Protocol Version 4, Src: 10.1.1.226 (10.1.1.226), Dst: 10.1.1.1 (10.1.1.1)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
    Total Length: 200
    Identification: 0x0000 (0)
    Flags: 0x02 (Don't Fragment)
        0... .... = Reserved bit: Not set
        .1.. .... = Don't fragment: Set
        ..0. .... = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x2341 [correct]
        [Good: True]
        [Bad: False]
    Source: 10.1.1.226 (10.1.1.226)
    Destination: 10.1.1.1 (10.1.1.1)
User Datagram Protocol, Src Port: 22776 (22776), Dst Port: 18384 (18384)
    Source port: 22776 (22776)
    Destination port: 18384 (18384)
    Length: 180
    Checksum: 0x17aa [validation disabled]
        [Good Checksum: False]
        [Bad Checksum: False]
Real-Time Transport Protocol
    [Stream setup by SDP (frame 2754)]
        [Setup frame: 2754]
        [Setup Method: SDP]
    10.. .... = Version: RFC 1889 Version (2)
    ..0. .... = Padding: False
    ...0 .... = Extension: False
    .... 0000 = Contributing source identifiers count: 0
    0... .... = Marker: False
    Payload type: ITU-T G.711 PCMU (0)
    Sequence number: 16398
    [Extended sequence number: 81934]
    Timestamp: 32320
    Synchronization Source identifier: 0x07d5dc9c (131456156)
    Payload: fff3eff77a71717bf6eff47e727078f9f0f2fd757075fdf2...

No.     Time            Source                src port Destination           dst port Protocol Info                                                            New Column
   3563 13:39:29.490508 10.1.1.226            22776    10.1.1.1              18384    RTP      PT=ITU-T G.711 PCMU, SSRC=0x7D5DC9C, Seq=16399, Time=480, Mark  214

Frame 3563: 214 bytes on wire (1712 bits), 214 bytes captured (1712 bits)
    WTAP_ENCAP: 1
    Arrival Time: Sep 24, 2013 13:39:29.490508000 CDT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1380047969.490508000 seconds
    [Time delta from previous captured frame: 0.002419000 seconds]
    [Time delta from previous displayed frame: 0.320006000 seconds]
    [Time since reference or first frame: 30.546014000 seconds]
    Frame Number: 3563
    Frame Length: 214 bytes (1712 bits)
    Capture Length: 214 bytes (1712 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ip:udp:rtp]
    [Coloring Rule Name: UDP]
    [Coloring Rule String: udp]
Ethernet II, Src: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a), Dst: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
    Destination: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        Address: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        Address: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IP (0x0800)
Internet Protocol Version 4, Src: 10.1.1.226 (10.1.1.226), Dst: 10.1.1.1 (10.1.1.1)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
    Total Length: 200
    Identification: 0x0000 (0)
    Flags: 0x02 (Don't Fragment)
        0... .... = Reserved bit: Not set
        .1.. .... = Don't fragment: Set
        ..0. .... = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x2341 [correct]
        [Good: True]
        [Bad: False]
    Source: 10.1.1.226 (10.1.1.226)
    Destination: 10.1.1.1 (10.1.1.1)
User Datagram Protocol, Src Port: 22776 (22776), Dst Port: 18384 (18384)
    Source port: 22776 (22776)
    Destination port: 18384 (18384)
    Length: 180
    Checksum: 0x17aa [validation disabled]
        [Good Checksum: False]
        [Bad Checksum: False]
Real-Time Transport Protocol
    [Stream setup by SDP (frame 2754)]
        [Setup frame: 2754]
        [Setup Method: SDP]
    10.. .... = Version: RFC 1889 Version (2)
    ..0. .... = Padding: False
    ...0 .... = Extension: False
    .... 0000 = Contributing source identifiers count: 0
    1... .... = Marker: True
    Payload type: ITU-T G.711 PCMU (0)
    Sequence number: 16399
    [Extended sequence number: 81935]
    Timestamp: 480
    Synchronization Source identifier: 0x07d5dc9c (131456156)
    Payload: 4f3e352d2b2f42f9dbd2c0b6adaaaec076595241372e2b2e...

No.     Time            Source                src port Destination           dst port Protocol Info                                                            New Column
   3567 13:39:29.510447 10.1.1.226            22776    10.1.1.1              18384    RTP      PT=ITU-T G.711 PCMU, SSRC=0x7D5DC9C, Seq=16400, Time=640        214

Frame 3567: 214 bytes on wire (1712 bits), 214 bytes captured (1712 bits)
    WTAP_ENCAP: 1
    Arrival Time: Sep 24, 2013 13:39:29.510447000 CDT
    [Time shift for this packet: 0.000000000 seconds]
    Epoch Time: 1380047969.510447000 seconds
    [Time delta from previous captured frame: 0.002292000 seconds]
    [Time delta from previous displayed frame: 0.019939000 seconds]
    [Time since reference or first frame: 30.565953000 seconds]
    Frame Number: 3567
    Frame Length: 214 bytes (1712 bits)
    Capture Length: 214 bytes (1712 bits)
    [Frame is marked: False]
    [Frame is ignored: False]
    [Protocols in frame: eth:ip:udp:rtp]
    [Coloring Rule Name: UDP]
    [Coloring Rule String: udp]
Ethernet II, Src: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a), Dst: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
    Destination: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        Address: Cisco_e8:a0:11 (00:09:e8:e8:a0:11)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Source: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        Address: Hewlett-_b1:3c:0a (00:13:21:b1:3c:0a)
        .... ..0. .... .... .... .... = LG bit: Globally unique address (factory default)
        .... ...0 .... .... .... .... = IG bit: Individual address (unicast)
    Type: IP (0x0800)
Internet Protocol Version 4, Src: 10.1.1.226 (10.1.1.226), Dst: 10.1.1.1 (10.1.1.1)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00: Not-ECT (Not ECN-Capable Transport))
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..00 = Explicit Congestion Notification: Not-ECT (Not ECN-Capable Transport) (0x00)
    Total Length: 200
    Identification: 0x0000 (0)
    Flags: 0x02 (Don't Fragment)
        0... .... = Reserved bit: Not set
        .1.. .... = Don't fragment: Set
        ..0. .... = More fragments: Not set
    Fragment offset: 0
    Time to live: 64
    Protocol: UDP (17)
    Header checksum: 0x2341 [correct]
        [Good: True]
        [Bad: False]
    Source: 10.1.1.226 (10.1.1.226)
    Destination: 10.1.1.1 (10.1.1.1)
User Datagram Protocol, Src Port: 22776 (22776), Dst Port: 18384 (18384)
    Source port: 22776 (22776)
    Destination port: 18384 (18384)
    Length: 180
    Checksum: 0x17aa [validation disabled]
        [Good Checksum: False]
        [Bad Checksum: False]
Real-Time Transport Protocol
    [Stream setup by SDP (frame 2754)]
        [Setup frame: 2754]
        [Setup Method: SDP]
    10.. .... = Version: RFC 1889 Version (2)
    ..0. .... = Padding: False
    ...0 .... = Extension: False
    .... 0000 = Contributing source identifiers count: 0
    0... .... = Marker: False
    Payload type: ITU-T G.711 PCMU (0)
    Sequence number: 16400
    [Extended sequence number: 81936]
    Timestamp: 640
    Synchronization Source identifier: 0x07d5dc9c (131456156)
    Payload: b6d65c58493b312c2c354fe2daccbcb2abaab3cd5f584c3d...





From: Michael Jerris <mike@jerris.com>
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Sent: Wednesday, September 25, 2013 4:45 PM
Subject: Re: [Freeswitch-users] RTP Wrong Timestamps and audio hiccups in conferencing output

Try looking at the time into the call to find the right packets.  Without seeing what exactly is wrong, we are not going to be able to guess what might be going on.

On Sep 24, 2013, at 1:29 PM, D D <tru083@yahoo.com> wrote:

They are flagged as wrong by Wireshark, in the VoIP RTP Player.

Unfortunately, Wireshark does not allow me to get from the 'W' in player back to the packets
it thinks are wrong in the detailed view.


From: Michael Jerris <mike@jerris.com>
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Sent: Tuesday, September 24, 2013 2:49 PM
Subject: Re: [Freeswitch-users] RTP Wrong Timestamps and audio hiccups in conferencing output

in what way is the timestamp "wrong"?

On Sep 24, 2013, at 3:30 PM, D D <tru083@yahoo.com> wrote:

Hi,

I am seeing periodic RTP Wrong Timestamps and audio hiccups when using conferencing.

I am calling in from two phones on the local LAN, and playing a 440-Hz tone into the conference 
on one of the phones.

On the receiving phone, I hear an audio hiccup (and the server-side Wireshark trace shows a 
Wrong Timestamp) about once every 750 ms.  It is very regular on the output from the
conference.  

The server-side Wireshark of the input RTP stream looks fine -- there are no anomalies.

I am seeing this problem on version 1.2.10 and 1.5.5b.

Is this something I need to report as a bug?

Thanks,
David



_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
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FreeSWITCH-powered IP PBX: The CudaTel Communication Server
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_________________________________________________________________________
Professional FreeSWITCH Consulting Services:
consulting@freeswitch.org
http://www.freeswitchsolutions.com

FreeSWITCH-powered IP PBX: The CudaTel Communication Server
http://www.cudatel.com

Official FreeSWITCH Sites
http://www.freeswitch.org
http://wiki.freeswitch.org
http://www.cluecon.com

FreeSWITCH-users mailing list
FreeSWITCH-users@lists.freeswitch.org
http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
http://www.freeswitch.org