[OpenSIPS-Users] trying from different source port

[Josip Djuricic]

Hi Bogdan,

Tnx, I know the question is preety stupid and it should not be on opensips
list, because I've noticed this problem with Cisco CUBE, like sometimes it
just confuses him and it stops responding to this kind of calls. So I
thought I'll ask for opinion.

It's just a hunch since all other calls work perfectly except for this user.

Thanks anyway.

Best regards,

Josip


-----Original Message-----
From: users-bounces at lists.opensips.org
[mailto:users-bounces at lists.opensips.org] On Behalf Of Bogdan-Andrei Iancu
Sent: Tuesday, December 29, 2009 3:35 PM
To: OpenSIPS users mailling list
Subject: Re: [OpenSIPS-Users] trying from different source port

Hi Josip,

AFAIK, the signalling may be asymmetric (on both sides), but this may 
break a lot of things at network level - NAT, firewalls, etc.

Regards,
Bogdan

Josip Djuricic wrote:
>
> Hi,
>
>  
>
> I have a question, it's more a theoretical question.
>
>  
>
> If the invite is sent to port 5060, would rfc allow responses to come 
> from different ports?
>
>  
>
> Ie..
>
>  
>
> Invite (src port 36000, dst port 5060) --- >
>
>

>                 < --- 100 Trying (src port 5060, dst port 5060)
>
>

>                 < --- 100 Trying (src port 37039, dst port 5060)
>
>

>                 < --- 183 Progress SDP (src port 37039, dst port 5060)
>
>

> < --- 200 OK SDP (src port 37039, dst port 5060)
>
>  
>
>  
>
> Best regards,
>
>  
>
> Josip
>
> ------------------------------------------------------------------------
>
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> Users mailing list
> Users at lists.opensips.org
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>   


-- 
Bogdan-Andrei Iancu
www.voice-system.ro


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