[Serusers] How SER communicate to other SIP server

[roayu]

Hi, Szasz!

I found that both UAC are only sending out packets but didn't receive any
packets from either party. For instance, softphone A only send packets to
serverA whereas softphone B only send packets to serverB. 

Is there any other settings that I need configure as well? Which firewall
settings that I need to check (server/client)?

Thanks.

Roa Yu


-----Original Message-----
From: Szasz Szabolcs [mailto:sszasz at digicomm.ro] 
Sent: Monday, July 09, 2007 4:40 PM
To: roayu
Cc: serusers at lists.iptel.org
Subject: Re: [Serusers] How SER communicate to other SIP server

Hi!

See your firewall settings, probably you don't allow to forward the RTP 
packets.

Szasz Szabolcs

----- Original Message ----- 
From: "roayu" <roayu at ctisys.net>
To: "Olaf Bergmann" <Olaf.Bergmann at freenet-ag.de>
Cc: <serusers at lists.iptel.org>
Sent: Monday, July 09, 2007 11:12 AM
Subject: Re: [Serusers] How SER communicate to other SIP server


> Hi, Olaf!
>
> I managed to call to the other SIP server. Unfortunately, both sides can't
> hear anything. What could be the problem? Could it be the NAT issue? If 
> so,
> where should I allocate them to use the mediaproxy(before/after
> rewritehostport())?
>
>
> Thanks.
>
> Best regards,
> Roa Yu
>
>
> -----Original Message-----
> From: Olaf Bergmann [mailto:Olaf.Bergmann at freenet-ag.de]
> Sent: Wednesday, July 04, 2007 2:14 PM
> To: roayu
> Cc: serusers at lists.iptel.org
> Subject: Re: [Serusers] How SER communicate to other SIP server
>
> roayu wrote:
>> Hi, Olaf!
>>
>>>From what I understand about forward() is that it will forward the 
>>>request
>> to the given destination statelessly. Whereas for t_relay(), it will 
>> relay
> a
>> message to the destination stated in current URI statefully. How do I get
>> the URI to point to the other SIP server by using t_relay() as I couldn't
>> assign any IP address for t_relay(). I managed to assign an IP address by
>> using forward().
>>
>> I tried to use both. Unfortunately, I still failed to forward the message
> to
>> the another SIP server to establish the call. Is there any functions I
> need
>> to use before using either those 2 functions? FYI, I will only call them
>> when it starts to INVITE.
>
> 482 Loop Detected
>
> The function you are looking for is called rewritehostport (or
> rewritehost, if you like). But you could also use
> t_relay_to_{udp,tcp} to specify a literal transport address where
> you want your request being routed to.
> <http://www.iptel.org/ser/doc/search> gives more information on
> these functions.
>
> Regards,
> Olaf
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