Re: Webrtc->SIP Audio Issues

Who AmI via sr-users <[email protected]>
Newsgroups gmane.comp.voip.ser
Message-ID <CAMX7=pegSuWkx1Hv=UNN2gwSQEN57tYwnhHrxp69Zbj55if86g@mail.gmail.com> 
This is a good repo to use as a reference:
https://github.com/havfo/WEBRTC-to-SIP

On Fri, 19 Sept 2025 at 11:11, Rajneesh Soni via sr-users <
[email protected]> wrote:

> Hi,
>
> you need to put different config for webrtc -> sip and from sip -> webrtc
>
> e.g.
> ```
> if ($proto =~ "ws") { # web --> SIP
> $xavp(r=>$T_branch_idx) = $xavp(r=>$T_branch_idx) + " rtcp-mux=demux
> DTLS=off ICE=remove RTP/AVPF";
> } else { # SIP --> web
> $xavp(r=>$T_branch_idx) = $xavp(r=>$T_branch_idx) + " rtcp-mux-offer
> generate-mid DTLS-reverse SDES-off ICE=force RTP/SAVPF";
> }
> ```
> Regards
> Rajneesh
>
>
> On Fri, Sep 19, 2025 at 12:52 AM Yuriy G via sr-users <
> [email protected]> wrote:
>
>> You have to deal with rtp profiles:
>>
>>
>> *> RTP/AVP, RTP/SAVP, UDP/TLS/RTP/SAVP, RTP/AVPF, RTP/SAVPF,
>> UDP/TLS/RTP/SAVPF*
>> Take a look closer to documentation:
>> https://kamailio.org/docs/modules/6.0.x/modules/rtpengine.html#rtpengine.f.rtpengine_offer
>>
>> чт, 18 сент. 2025 г. в 20:35, Fernando Lopes via sr-users <
>> [email protected]>:
>>
>>> Hello everyone,
>>>
>>> I'm currently trying to make WebRTC-to-SIP calls. My setup is: WebRTC →
>>> WSS → Kamailio → UDP → Asterisk, using rtpengine. I have a route named
>>> GET_ICE that is called in onreply_route.
>>> Everything else works: SIP-to-SIP calls and WebRTC messaging are fine.
>>> Only WebRTC-to-SIP calls have audio issues. I've tested many different ICE
>>> flags, but without success. In my testing I think I've managed to get audio
>>> to kamailio but not to webrtc, but decided to rollback to start to get help.
>>>
>>> In my PJSIP configuration, I allow these codecs:
>>> allow=g722,ulaw,vp9,vp8,h264
>>>
>>> My Kamailio code:
>>> route[GET_ICE] {
>>>     if ( $proto == "wss" ) {
>>>         if (is_ip_rfc1918("$si")) {
>>>             $dlg_var(ice) = " ";
>>>         } else {
>>>             $dlg_var(ice) = " ICE=remove RTP ";
>>>
>>>         }
>>>     } else {
>>>         $dlg_var(ice) = "ICE=FORCE";
>>>     }
>>> }
>>>
>>> route[BUILD_RTPENGINE_PARAMETER] {
>>>     route(SET_RTP_DIRECTION);   # returns $dlg_var(rtp_direction)
>>>     if ( is_method("INVITE") ) {
>>>         route(GET_ICE);             # returns $dlg_var(ice)
>>>     }
>>>
>>>     xlog("L_WARN", "[BUILD_RTPENGINE_PARAMETER] >
>>> $dlg_var(rtp_direction)\n");
>>>     $var(rtp_param) = "replace-origin replace-session-connection " +
>>> $dlg_var(ice) + " " + $dlg_var(rtp_direction);
>>>     xlog("L_WARN", "[RTPENGINE]: Method $rm status $rs protocol:
>>> $dlg_var(call_type) -> $dlg_var(rtp_direction) -> [$dlg_var(ice)]\n");
>>>     xlog("L_WARN", "[RTPENGINE]: Param: [$var(rtp_param)]\n");
>>>     rtpengine_manage($var(rtp_param));
>>> }
>>>
>>> My logs:
>>>
>>>  3(47) WARNING: <script>: [REPLY] 1xx or 2xx received
>>>  3(47) WARNING: <script>: [SET_RTP_DIRECTION] -> reply from internal =
>>> direction=internal direction=external
>>>  3(47) WARNING: <script>: [BUILD_RTPENGINE_PARAMETER] >
>>> direction=internal direction=external
>>>  3(47) WARNING: <script>: [RTPENGINE]: Method INVITE status 200
>>> protocol: <null> -> direction=internal direction=external -> []
>>>  3(47) WARNING: <script>: [RTPENGINE]: Param: [replace-origin
>>> replace-session-connection  direction=internal direction=external]
>>> [1758217893.108564] INFO: [ID="m7e648isjm9n96ti62k9"]: [control]
>>> Received command 'answer' from 10.5.0.8:42938
>>> [1758217893.108583] INFO: [ID="m7e648isjm9n96ti62k9"]: [core]
>>> replace-session-connection flag encountered, but not supported anymore.
>>> [1758217893.108998] WARNING: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1"]: [core] ICE restart
>>> detected, but reset not allowed at this point
>>> [1758217893.109379] INFO: [ID="m7e648isjm9n96ti62k9"]: [control]
>>> Replying to 'answer' from 10.5.0.8:42938 (elapsed time 0.000804 sec)
>>> [1758217893.109411] INFO: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]: [ice]
>>> ICE negotiated: peer for component 1 is 10.5.0.2:28384
>>> [1758217893.109418] INFO: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]: [ice]
>>> ICE negotiated: local interface 10.5.0.8
>>>
>>> [1758217893.208990] INFO: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]: [ice]
>>> ICE negotiated: peer for component 1 is 10.5.0.2:28384
>>> [1758217893.209036] INFO: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]: [ice]
>>> ICE negotiated: local interface 10.5.0.8
>>> [1758217894.111112] INFO: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]:
>>> [crypto] DTLS: Peer certificate accepted
>>> [1758217894.112292] INFO: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]:
>>> [crypto] DTLS-SRTP successfully negotiated using AES_CM_128_HMAC_SHA1_80
>>> [1758217894.112341] INFO: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]:
>>> [crypto] DTLS-SRTP successfully negotiated using AES_CM_128_HMAC_SHA1_80
>>> [1758217896.299109] INFO: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]: [core]
>>> Confirmed peer address as 10.5.0.2:28384
>>> [1758217896.299174] ERR: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]: [srtp]
>>> SRTP output wanted, but no crypto suite was negotiated
>>> [1758217901.298677] ERR: [ID="m7e648isjm9n96ti62k9"
>>> tag="f03487ad-0be2-49d5-9452-289c407db828" index="1" port="14656"]: [rtcp]
>>> SRTCP output wanted, but no crypto suite was negotiated
>>>
>>> [1758217930.743494] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] Closing call due to timeout
>>> [1758217930.743636] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] Final packet stats:
>>> [1758217930.743651] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] --- Tag '2bad2cacef0945b1a506a198aeb4ae01', created 1:00 ago for
>>> branch ''
>>> [1758217930.743659] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] ------ Media #1 (audio over RTP/AVP) using unknown codec
>>> [1758217930.743670] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] --------- Port        10.5.0.8:15028 <>    172.31.208.1:4000 ,
>>> SSRC 0, in 0 p, 0 b, 0 e, 60 ts, out 0 p, 0 b, 0 e
>>> [1758217930.743677] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] --------- Port        10.5.0.8:15029 <>    172.31.208.1:4001
>>> (RTCP), SSRC 0, in 0 p, 0 b, 0 e, 60 ts, out 0 p, 0 b, 0 e
>>> [1758217930.743683] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] --- Tag '88cf8c49-cdfc-475e-8075-a3ce0a36ecca', created 1:00 ago for
>>> branch ''
>>> [1758217930.743687] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] ------ Media #1 (audio over RTP/AVP) using unknown codec
>>> [1758217930.743693] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] --------- Port        10.5.0.8:17956 <>        10.5.0.2:64570,
>>> SSRC 0, in 0 p, 0 b, 0 e, 60 ts, out 0 p, 0 b, 0 e
>>> [1758217930.743699] INFO: [ID="483961fa065a4df9b5f76059c8a1a3e3"]:
>>> [core] --------- Port        10.5.0.8:17957 <>        10.5.0.2:64571
>>> (RTCP), SSRC 0, in 0 p, 0 b, 0 e, 60 ts, out 0 p, 0 b, 0 e
>>>
>>> Thank you.
>>> __________________________________________________________
>>> Kamailio - Users Mailing List - Non Commercial Discussions --
>>> [email protected]
>>> To unsubscribe send an email to [email protected]
>>> Important: keep the mailing list in the recipients, do not reply only to
>>> the sender!
>>>
>> __________________________________________________________
>> Kamailio - Users Mailing List - Non Commercial Discussions --
>> [email protected]
>> To unsubscribe send an email to [email protected]
>> Important: keep the mailing list in the recipients, do not reply only to
>> the sender!
>>
> __________________________________________________________
> Kamailio - Users Mailing List - Non Commercial Discussions --
> [email protected]
> To unsubscribe send an email to [email protected]
> Important: keep the mailing list in the recipients, do not reply only to
> the sender!
>

__________________________________________________________
Kamailio - Users Mailing List - Non Commercial Discussions -- [email protected]
To unsubscribe send an email to [email protected]
Important: keep the mailing list in the recipients, do not reply only to the sender!
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.