[SR-Users] Audio issue when using 2 port ATA

Daniel-Constantin Mierla miconda at gmail.com
Wed Jan 6 14:09:21 CET 2016


Is the firewall a system that you control and can do traces on it? Can
you see rtp coming to it? Is it forwarded?

Cheers,
Daniel

On 06/01/16 13:40, Daniel W. Graham wrote:
> Firewall is not doing sip alg, I have compared traces and they are the
> same.
>
> Daniel W. Graham
> CMSInter.net <http://cmsinter.net> LLC
> 989.400.4230
>
> On Jan 6, 2016, at 3:05 AM, Daniel-Constantin Mierla
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
>> Hello,
>>
>> is the firewall doing SIP ALG?
>>
>> Can you get a SIP network trace on UA? If yes, compare it with the
>> one captured on server.
>>
>> Cheers,
>> Daniel
>>
>> On 06/01/16 01:50, Daniel W. Graham wrote:
>>>
>>> Setup is -
>>>
>>>  
>>>
>>> 2 port ATA <> FIREWALL <> KAMAILIO / RTPPROXY <> ASTERISK
>>>
>>>  
>>>
>>> If I have a single port in use behind the firewall, all NAT
>>> functions work properly and media is relayed through rtpproxy.
>>>
>>>  
>>>
>>> If I have both ports in use behind the firewall, when outbound calls
>>> from UA are placed there is two way audio on both calls. However if
>>> inbound calls are placed to UA, the first call works, second call
>>> only has outbound audio.
>>>
>>>  
>>>
>>> Different SIP URI is used for each port.
>>>
>>>  
>>>
>>> If the firewall is eliminated everything works fine.
>>>
>>>  
>>>
>>> Anyone have an idea how to troubleshoot or what could be missing? I
>>> have done packet captures on both the UA side and Kamailio side, and
>>> I see two RTP flows (rtp ports match on both sides as well) despite
>>> lack of inbound audio on the second call.
>>>
>>>  
>>>
>>> If I can post anything config wise that would help let me know.
>>>
>>>  
>>>
>>> Thanks!
>>>
>>>  
>>>
>>> -Dan
>>>
>>>  
>>>
>>>
>>>
>>> _______________________________________________
>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>> sr-users at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>
>> -- 
>> Daniel-Constantin Mierla
>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>> Book: SIP Routing With Kamailio - http://www.asipto.com
>> http://miconda.eu
>> _______________________________________________
>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>> sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>
>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
http://miconda.eu

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