Re: rtpengine. Unknown codecs

You need to check the in and out SDP is getting set for the correct IP 
addresses and Ports. Then check the firewalling. something could be 
using the incorrect config file after the upgrade.

you should see traffic on the ports that are agreed in the SDP.


Richard

On 10/10/2025 10:45, Patrick Karton via sr-users wrote:
> This seems to me a network issue there are no packets flowing in or 
> out of rtpengine.
>
> Le 10 oct. 2025 09:53, disa_369--- via sr-users 
> <[email protected]> a écrit :
>
>     After upgrading minor version Debian 12, Kamailio and rtpengine
>     stopped proxying media traffic. (The combination works exclusively
>     as a SIP proxy.)
>     Systemctl status kamailio and rtpengine is ok (enabled, activating).
>     No configuration errors.
>
>     Call flow.
>     PBX --> Kamailio\rtpengine ---> Video conference system. Internal
>     audio calls only.
>
>     When calling, there's silence and the connection hangs up.
>
>     Found some strange rtpengine logs.
>     Unknown codecs? How is it?-)
>     ```
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: DEBUG:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] --- subscription for media
>     with monologue tag '' (index: 1)
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: INFO:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] ------ Media #1 (audio
>     over
>     RTP/AVP) using unknown codec
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: INFO:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] --------- Port
>     10.192.32.185:34704 <>     10.18.4.150:19196, SSRC 0, in 0 p, 0 b,
>     0 e, 60
>     ts, out 0 p, 0 b, 0 e
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: INFO:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] --------- Port
>     10.192.32.185:34705 <>     10.18.4.150:19197 (RTCP), SSRC 0, in 0
>     p, 0 b, 0
>     e, 60 ts, out 0 p, 0 b, 0 e
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: INFO:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] --- Tag '', created
>     1:00 ago for
>     branch ''
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: DEBUG:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] --- subscribed to media
>     with
>     monologue tag 'g6y6ceEKEgSXE8bhChIElxPETPE5hQAq' (index: 1)
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: DEBUG:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] --- subscription for media
>     with monologue tag 'g6y6ceEKEgSXE8bhChIElxPETPE5hQAq' (index: 1)
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: INFO:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] ------ Media #1 (audio
>     over
>     RTP/AVP) using unknown codec
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: INFO:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] --------- Port
>     10.192.32.185:37950 <>                :0    , SSRC 0, in 0 p, 0 b,
>     0 e, 60
>     ts, out 0 p, 0 b, 0 e
>     Oct 09 15:01:14 zaks-sbc01-op rtpengine[1158181]: INFO:
>     [83d0bc50a50711f09a58e0071bf41f9b]: [core] --------- Port
>     10.192.32.185:37951 <>                :0     (RTCP), SSRC 0, in 0
>     p, 0 b, 0
>     e, 60 ts, out 0 p, 0 b, 0 e
>     ```
>
>     Any help?
>     Thx
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