[OpenSIPS-Users] [NEW] SDP codec manipulation feature

[Brett Nemeroff]

I don't really need codec manipulation so much as just knowing what codec
was used (yes in a PV). Not a list of available codecs, but which codec was
negotiated and used. I don't know SDP very well so I'm not sure if that's
immediately discernible. This example was given earlier. Lets say I want to
limit to 50 g729a dialogs to a particular IP.
That's what I really want to use it for. I'd also really like to log the
codec on a per call basis in ACC.
-Brett


On Tue, Jul 28, 2009 at 2:54 AM, Bogdan-Andrei Iancu <bogdan at voice-system.ro
> wrote:

> Hi Brett,
>
> You mean an PV returning the list with all the available codecs ?
>
> Regards,
> Bogdan
>
> Brett Nemeroff wrote:
>
>> Is there anyway to write to an AVP the negotiated codec? That'd be good
>> for CDR purposes. Would I need a bunch of codec_exists in the on_reply route
>> checking for 200 OK?
>>
>> On Thu, Jul 23, 2009 at 4:46 AM, andrei dragus <andreidragus at yahoo.com<mailto:
>> andreidragus at yahoo.com>> wrote:
>>
>>
>>    Hello,
>>
>>    Methods have been added for SDP codec manipulation in the textops
>>    module.
>>    Please update your module if you wish to use them.
>>
>>    There are 4 methods:
>>     codec_exists(name[,clock]); //test if a codec exists
>>     codec_delete(name[,clock]); //delete a codec
>>     codec_move_up(name[,clock]); //move a codec to the front of the list
>>     codec_move_down(name[,clock]);//move a codec to the back of the list
>>
>>    Each of them can take a codec name and an optional clock
>>    parameter. If the clock is unspecified all of the codecs with that
>>    name will match.
>>
>>    All of the methods will act on all streams from all sessions
>>    inside the SDP.
>>
>>    You can use these methods one after another to get a desired effect.
>>    E.g. To make GSM the least prefered codec but GSM/8000 the most
>>    prefered of all GSM codecs use:
>>
>>    codec_move_up("GSM","8000");
>>    codec_move_down("GSM");
>>
>>    Once a codec was deleted it will not be detected by codec_exists().
>>
>>    Feel free to test these methods and please report any bugs you may
>>    find.
>>
>>    Thanks,
>>    Andrei.
>>
>>
>>
>>
>>
>>
>>
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>
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