[Users] SDP Parser

[Klaus Darilion]

Michel Bensoussan wrote:
> Klaus Darilion wrote:
>> Parsing the SDP does not give you the used codec as there may be 
>> several codecs in the SDP and you do not know which codec is used by 
>> the clients.
> This is true for INVITE message but as I understand (but I'm not 
> familiar with SIP), in the OK message, we can determine which codec is 
> used. No?

Not always. Often the 200 OK contains only one codec which will be used 
by both parties. But I think there may also be asynchronous codec 
(caller sends G711, callee sends G729).

>> But for example you can use mediaproxy. Mediaproxy allows you to 
>> retrieve the status of all current calls (codecs, bandwidth, ...)
> Well, the mediaproxy module needs an external proxy server. So it seems 
> to be too heavy for my needs.
> The real time session statistics (from MediaProxy Server) will be very 
> useful but I'm not sure it's a good idea to use the server it if I don't 
> need the NAT traversal features.

If the media goes directly from caller to callee I wonder why you need 
to know the bandwidth at all as the RTP packets may be out of your network.

regards
klaus

>>
>> regards
>> klaus
>>
>> Michel Bensoussan wrote:
>>> Hello
>>> For each voice session I need to know the used codec (for bandwith 
>>> calculation). For that I need to parse the SIP message body.
>>> I didn't find in OpenSER such a functionality.
>>> Is there a module that doing that?
>>> Or maybe someone is working on it?
>>> A suggestion for an open source?
>>>
>>> Thanks.
>>>
>>> Regards,
>>> Michel.
>>>
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at openser.org
>>> http://openser.org/cgi-bin/mailman/listinfo/users
>>
>>


-- 
Klaus Darilion
nic.at