Hello,
I am using kamailio to register the webrtc client and routes the calls to asterisk using pjsip. I am having no voice on both ends. Logs are attached witht this email.

Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [control] Received command 'offer' from 10.13.1.127:59841
Mar 24 13:06:58 debian rtpengine[7345]: NOTICE: [8asmubtpv46ac7nrfk57]: [core] Creating new call
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [control] Replying to 'offer' from 10.13.1.127:59841 (elapsed time 0.016067 sec)
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [control] Received command 'answer' from 10.13.1.127:52045
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [control] Replying to 'answer' from 10.13.1.127:52045 (elapsed time 0.000997 sec)
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [ice] ICE negotiated: peer for component 1 is 10.13.1.170:15634
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [ice] ICE negotiated: local interface 10.13.1.127
Mar 24 13:06:58 debian rtpengine[7345]: ERR: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [core] SRTP output wanted, but no crypto suite was negotiated
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [control] Received command 'answer' from 10.13.1.127:52045
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [control] Replying to 'answer' from 10.13.1.127:52045 (elapsed time 0.000786 sec)
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [crypto] DTLS: Peer certificate accepted
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [crypto] DTLS-SRTP successfully negotiated using AES_CM_128_HMAC_SHA1_80
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [crypto] DTLS-SRTP successfully negotiated using AES_CM_128_HMAC_SHA1_80
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [ice] ICE negotiated: peer for component 1 is 10.13.1.170:15634
Mar 24 13:06:58 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [ice] ICE negotiated: local interface 10.13.1.127
Mar 24 13:07:02 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [core] Confirmed peer address as 10.13.1.170:15634
Mar 24 13:07:02 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [core] Kernelizing media stream: 10.13.1.170:15634 -> 10.13.1.127:10940 | 10.13.1.127:10960 -> 192.168.30.200:53489
Mar 24 13:07:02 debian rtpengine[7345]: WARNING: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [core] No support for kernel packet forwarding available (encryption cipher or HMAC not supported by kernel module)
Mar 24 13:07:02 debian rtpengine[7345]: NOTICE: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [core] Setting 'non-forwarding' flag for kernel stream due to lack of sinks
Mar 24 13:07:03 debian rtpengine[7345]: ERR: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [rtcp] SRTCP output wanted, but no crypto suite was negotiated
Mar 24 13:07:03 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [core] Removing media stream from kernel: local 10.13.1.127:10940
Mar 24 13:07:03 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [core] Kernelizing media stream: 10.13.1.170:15634 -> 10.13.1.127:10940 | 10.13.1.127:10960 -> 192.168.30.200:53489
Mar 24 13:07:03 debian rtpengine[7345]: WARNING: [8asmubtpv46ac7nrfk57/223df8fa-8106-48af-844f-33f97530a0d8/1 port 10940]: [core] No support for kernel packet forwarding available (encryption cipher or HMAC not supported by kernel module)
Mar 24 13:07:04 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [control] Received command 'delete' from 10.13.1.127:52045
Mar 24 13:07:04 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] Scheduling deletion of call branch '9693uq66f0' (via-branch '') in 30 seconds
Mar 24 13:07:04 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] Scheduling deletion of call branch '223df8fa-8106-48af-844f-33f97530a0d8' (via-branch '') in 30 seconds
Mar 24 13:07:04 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] Scheduling deletion of entire call in 30 seconds
Mar 24 13:07:04 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [control] Replying to 'delete' from 10.13.1.127:52045 (elapsed time 0.001463 sec)
Mar 24 13:07:17 debian /usr/local/sbin/kamailio[13362]: INFO: <script>: 10.13.1.170 authentication bypassed for sip:developer@10.13.1.127
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] Final packet stats:
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] --- Tag '9693uq66f0', created 0:36 ago for branch ''
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] ---     subscribed to '223df8fa-8106-48af-844f-33f97530a0d8'
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] ---     subscription for '223df8fa-8106-48af-844f-33f97530a0d8'
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] ------ Media #1 (audio over UDP/TLS/RTP/SAVPF) using unknown codec
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] --------- Port     10.13.1.127:10960 <>  192.168.30.200:53489, SSRC 0, in 0 p, 0 b, 292 e, 36 ts, out 0 p, 0 b, 0 e
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] --- Tag '223df8fa-8106-48af-844f-33f97530a0d8', created 0:36 ago for branch ''
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] ---     subscribed to '9693uq66f0'
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] ---     subscription for '9693uq66f0'
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] ------ Media #1 (audio over UDP/TLS/RTP/SAVPF) using opus/48000/2
Mar 24 13:07:34 debian rtpengine[7345]: INFO: [8asmubtpv46ac7nrfk57]: [core] --------- Port     10.13.1.127:10940 <>     10.13.1.170:15634, SSRC 1ada0b2b, in 292 p, 40137 b, 1 e, 30 ts, out 2 p, 1449 b, 0 e