[OpenSIPS-Users] How to overcome SIP ALG on Wi-Fi routers

[Nabeel]

Can packet fragmentation be verified (to be sure that it is packet
fragmentation)?
On 6 May 2016 5:28 pm, "Nabeel" <nabeelshikder at gmail.com> wrote:

> The trace I posted earlier is what I see with tcpdump when attempting a
> call. There is no other INVITE shown in the trace:
> http://pastebin.com/raw/C4iymTbh
>
> The trace seems to end abruptly in the middle of the SDP, so I think it
> could be due to packet fragmentation.
> On 6 May 2016 4:18 pm, "Bogdan-Andrei Iancu" <bogdan at opensips.org> wrote:
>
>> So that meas the INVITE never gets to the callee ?? maybe it is not
>> properly routed .
>>
>> Do you see (with ngrep or tcpdump) the INVITE being sent out by opensips
>> towards callee ?
>>
>> Regards,
>>
>> Bogdan-Andrei Iancu
>> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>>
>> On 06.05.2016 12:56, Nabeel wrote:
>>
>> Hi,
>>
>> Thanks for the idea about packet compression. By 'call fails to connect',
>> I meant the call does not connect to the callee, ie. the callee's phone
>> does not ring after the INVITE (despite using TURN server).
>>
>> This was a public WiFi network and that was all I could get at the time.
>> I am using OpenSIPS version 2.1.
>>
>> Nabeel
>> On 6 May 2016 9:16 am, "Bogdan-Andrei Iancu" <bogdan at opensips.org> wrote:
>>
>>> Hi,
>>>
>>> Hard to analyze a call based on the INVITE packet only :). Still the SIP
>>> signaling does not show any ALG interference (also not sure if the capture
>>> was done before or after the ALG). Also, what you mean by "call fails" ?no
>>> reply, negative reply , no audio ?
>>>
>>> Regards,
>>>
>>> Bogdan-Andrei Iancu
>>> OpenSIPS Founder and Developerhttp://www.opensips-solutions.com
>>>
>>> On 05.05.2016 22:35, Nabeel wrote:
>>>
>>>
>>> Please check the following SIP trace taken within a WiFi network. The
>>> call fails to connect despite the INVITE request and using a non-standard
>>> port. Could this be caused by SIP ALG, or some unopened RTP port on the
>>> router?
>>>
>>> http://pastebin.com/raw/C4iymTbh
>>>
>>>
>>> _______________________________________________
>>> Users mailing listUsers at lists.opensips.orghttp://lists.opensips.org/cgi-bin/mailman/listinfo/users
>>>
>>>
>>>
>>
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