[Serusers] onreply_route and stopping 183 messages

[Simon Miles]

Yes the call is established at the end.

In the 183 message there is no media information, so I'm guessing that
the gateway is not sending out an RTP stream and the CPE is not reacting
to the ringing message ! !

Strange how it all works with a different gateway ! ! I do know that the
CPE is working to RFC 2543 and the new gateway is RFC 3261 - but I'm
told they are backward compatible.


Simon

-----Original Message-----
From: Marian Dumitru [mailto:marian.dumitru at voice-sistem.ro] 
Sent: 26 January 2005 18:27
To: Simon Miles
Cc: serusers at lists.iptel.org
Subject: Re: [Serusers] onreply_route and stopping 183 messages


Hi Simon,

Simon Miles wrote:
> We have a problem with a piece of CPE after changing the PSTN gateway 
> manufacturer. We no longer get a ringing tone !

but at the end, it the call established? It's only about the missing 
ringing tone?

> So I was trying to emulate the original packet sequence and I noticed 
> that the new gateway sends out 183 messages. So I was trying to remove

> them just incase the CPE was getting confused.

183 reply is used by gateways to send early media. In this case the 
ringing tone is actually send as RTP stream by the gateway (usually SIP 
devices play ringing tone locally when 180 received). Maybe your problem

is that the RTP media from 183 (check the SDP body) is not correct or 
the media itself doesn't contain the ringing sound :-).


regards,
Marian

> 
> 
> Simon
> 
> -----Original Message-----
> From: serusers-bounces at iptel.org [mailto:serusers-bounces at lists.iptel.org] 
> On Behalf Of Marian Dumitru
> Sent: 26 January 2005 17:56
> To: Simon Miles
> Cc: serusers at lists.iptel.org
> Subject: Re: [Serusers] onreply_route and stopping 183 messages
> 
> 
> Hi Simon,
> 
> Currently there is no way to drop a reply from onreply_route. Is this
> really needed, no other way around?...maybe altering the reply... ?
> 
> Regards,
> Marian
> 
> Simon Miles wrote:
> 
>>I would like to stop 183 Session Progress messages. I can see then 
>>arriving and being dealt with by the onreply_route code, but how can I
> 
> 
>>stop then being forwarded by the sip server ?
>> 
>>Thanks
>> 
>> 
>>Simon
>>
>>
>>----------------------------------------------------------------------
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>>
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> 
> 

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