Re: rtpengine. Unknown codecs

Patrick Karton via sr-users <[email protected]>
Newsgroups gmane.comp.voip.ser
Message-ID <GV1PR05MB11341BEBCBAF25FB925FEFD30DFEFA@GV1PR05MB11341.eurprd05.prod.outlook.com>
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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