[Freeswitch-users] Eavesdrop results in rewriting RTP sequence numbers on a bridge.

[Richard Brady]

Yes, my bad. Misinterpretation of Wireshark graph:

https://dl.dropboxusercontent.com/u/51603927/graph_of_media_bug_impact_on_RTP_seqnum.png

Something definitely changes when the media bug is added. I will work out
what but I think FS is inserting silence frames when the media bug is on,
and not inserting them when it is off.

Thanks for setting me straight.

On 12 September 2013 13:58, Anthony Minessale
<anthony.minessale at gmail.com>wrote:

> Seq numbers never are preserved. Again dobtou mean timestamps?
> On Sep 12, 2013 7:31 AM, "Richard Brady" <rnbrady at gmail.com> wrote:
>
>> Thanks.
>>
>> I'm not talking about the new stream for the eavesdrop. I'm talking about
>> the streams on the A and B legs of the bridge.
>>
>> I don't see why FS would rewrite sequence numbers on an RTP stream which
>> it is simply bridging (no transcoding, no muxing, etc). Sequence numbers
>> allow packet loss to be detected and compensated for. If FS is not running
>> a JB or PLC then it should leave discontinuous sequence numbers as is so
>> that a downstream JB / PLC can use them.
>>
>> I'll send some Wireshark screenshots shortly. And will double check re
>> seq num vs timestamps.
>>
>> On 11 September 2013 20:19, Anthony Minessale <
>> anthony.minessale at gmail.com> wrote:
>>
>>> Seq numbers are always rewritten.  Maybe you mean timestamps?
>>> The muxing and recreation of a new media stream requires a newly
>>> generated stream.  There is not a way around that.
>>>
>>>
>>>
>>> On Wed, Sep 11, 2013 at 9:29 AM, Richard Brady <rnbrady at gmail.com>wrote:
>>>
>>>> Hi guys
>>>>
>>>> Seems than running eavesdrop (and potentially other media bugs) on a
>>>> bridged channel results in the rewriting of sequence numbers on RTP
>>>> streams, potentially hiding packet loss when it occurs and creating havoc
>>>> with downstream jitterbuffers.
>>>>
>>>> Is there a way to disable this behaviour?
>>>>
>>>> Richard
>>>>
>>>> --
>>>> Richard Brady
>>>> M: +44 (0)7771 623 348
>>>> T:  +44 (0)20 8144 8160
>>>> E: rnbrady at gmail.com
>>>>
>>>>
>>>> _________________________________________________________________________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>>
>>>> 
>>>> 
>>>>
>>>> Official FreeSWITCH Sites
>>>> http://www.freeswitch.org
>>>> http://wiki.freeswitch.org
>>>> http://www.cluecon.com
>>>>
>>>> FreeSWITCH-users mailing list
>>>> FreeSWITCH-users at lists.freeswitch.org
>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>> UNSUBSCRIBE:
>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>> http://www.freeswitch.org
>>>>
>>>>
>>>
>>>
>>> --
>>> Anthony Minessale II
>>>
>>> FreeSWITCH http://www.freeswitch.org/
>>> ClueCon http://www.cluecon.com/
>>> Twitter: http://twitter.com/FreeSWITCH_wire
>>>
>>> AIM: anthm
>>> MSN:anthony_minessale at hotmail.com
>>> GTALK/JABBER/PAYPAL:anthony.minessale at gmail.com
>>> IRC: irc.freenode.net #freeswitch
>>>
>>> FreeSWITCH Developer Conference
>>> sip:888 at conference.freeswitch.org
>>> googletalk:conf+888 at conference.freeswitch.org
>>> pstn:+19193869900
>>>
>>> _________________________________________________________________________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> 
>>> 
>>>
>>> Official FreeSWITCH Sites
>>> http://www.freeswitch.org
>>> http://wiki.freeswitch.org
>>> http://www.cluecon.com
>>>
>>> FreeSWITCH-users mailing list
>>> FreeSWITCH-users at lists.freeswitch.org
>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>> http://www.freeswitch.org
>>>
>>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> 
>> 
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://wiki.freeswitch.org
>> http://www.cluecon.com
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
>>
>>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> 
> 
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://wiki.freeswitch.org
> http://www.cluecon.com
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.freeswitch.org/pipermail/freeswitch-users/attachments/20130912/9f151115/attachment-0001.html