[OpenSIPS-Users] 180 w/ SDP -> 183

[Jeff Pyle]

Hi Thomas,

I did see your script.  It's very nice.  I have two problems with it.
First, I can't get my mind around how it works (my learning curve), and
second, it does the opposite of what I need.  Perhaps once I understand how
it works I'll be able to implement it in reverse.


- Jeff



On 4/14/09 8:51 AM, "Thomas Gelf" <thomas at gelf.net> wrote:

> Hi Jeff,
> 
> OpenSIPS itself does not allow you to rewrite status codes, but you can
> find a perl script doing so on the OpenSIPS website (tutorials):
> 
>   http://www.opensips.org/index.php?n=Resources.DocsTutPerl183to180
> 
> However, this will not help you as I assume there is no SDP in your 180
> replies. And "inventing" such an SDP would probably fool the client, but
> you'll not hear anything, no RBT.
> 
> Regards,
> Thomas Gelf
> 
> Jeff Pyle wrote:
>> Hello,
>> 
>> A small number of my PSTN carriers send 180 Ringing with SDP when inband
>> ringback is available.  This causes fits in some versions of Asterisk,
>> sending an SDPless 180 and immediately later a 183 with SDP.  Some UACs
>> render that very strangely.
>> 
>> How would one go about detecting a 180 with SDP in a reply_route of Opensips
>> and, in effect, flip it to a 183 with the same SDP?
>> 
>> 
>> Thanks,
>> Jeff
> 
> 
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