[Kamailio-Users] Engaging rtpproxy

[Klaus Darilion]

Graham Wooden wrote:
> Sorry for the late reply; things have just been way hectic and haven't had
> time to circle back around on this.
> 
> Klaus, what would be the best way to call force_rtp_proxy() in the
> reply_route section?  As mentioned prior, I don't want to handle the audio
> for all calls.  Do I need to set a flag or something?

You have 2 possibilities:

- use the same reply route for all transaction and mark the 
"rtpproxy-ing" transaction with a flag
- activate the reply-route with force_rtp_proxy only for those 
transcation which need it. Further, put a "cockie" (a record-route) 
parameter) for this transaction into the record router header, .e.g 
nat=yes. Then, when doing losse_route for in-dialog requests check for 
the existence of the parameter (see README of rr module) and if nat=yes, 
then call force_rtp_proxy and active the corresponding reply router.

in the reply route call force_rtp_proxy if reply code is 180 or 183 or 200.

regards
klaus


> I have rtpproxy installed and kamailio sees it (via the sock).
> I am doing the force_rtp_propxy in the 302 statement...
> 
> What is occuring now is the call goes back out to the PSTN but there is no
> audio....
> 
> Any guidance is much appreciated.
> 
> -graham
> 
> 
> On 10/28/08 4:20 AM, "Klaus Darilion" <klaus.mailinglists at pernau.at> wrote:
> 
>> Hi!
>>
>> Note: There are 2 RTP proxies for Kamailio:
>>   for Kamailio <= 1.3: rtpproxy (controlled via nathelper module) and
>> mediaproxy (controlled via mediaproxy module)
>>
>>   for Kamailio >= 1.4: rtpproxy (controlled via nathelper module) and
>> mediaproxy2 (controlled via mediaproxy module)
>>
>> mediaproxy2 is a Linux kernel module and I think you can not record with
>> it. AFAIK rtpproxy supports recording of sessions.
>> http://www.kamailio.org/docs/modules/devel/nathelper.html#id2506972
>>
>> 3xx can be caught in failure_route.
>>
>> There you execute get_redirects("*"); the force_rtpproxy and then
>> t_relay. Further make sure that force_rtp_proxy() is also called for the
>> 200 OK response (reply route) and furter in-dialog requests.
>>
>> regards
>> Klaus
>>
>> Graham Wooden schrieb:
>>> Hi list,
>>> I currently don¹t proxy audio nor have any plans to for all calls, except
>>> for the "302 Redirect", where I need kamailio to become a b2bua with
>>> RTPproxy (or for the record CALEA).
>>>
>>> However, I can¹t seem to get the ³if² statement down on where
>>> ³engage_media_proxy² gets called without doing it for all outbound calls.
>>> What is the best way to identify a call that was from a SIP client that
>>> issued a 302?
>>>
>>> My last effort was:
>>>    if ( uri == mysqlf && is_method("INVITE") ){
>>>
>>> But that seemed to get every call.  Any guidance would be appreciated,
>>> thanks.
>>>
>>> -graham
>>>
>>>
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at lists.kamailio.org
>>> http://lists.kamailio.org/cgi-bin/mailman/listinfo/users
> 
>