[Freeswitch-users] Transcoding G729 to PCMA fails

Fri Feb 3 19:36:43 MSK 2017

Leg A proposes the following codecs in his INVITE:

audio 4010 RTP/AVP 18 101

Leg B generated by FS propose PCMA, as expected, in the INVITE:

audio 20428 RTP/AVP 8 101

Leg B got 183 with SDP:

audio 41666 RTP/AVP 8 101

FS sends CANCEL to Leg B and 488 to the Leg A.

The only difference between the INVITE sent to LEG B and his answer into 183, it's the fmtp:101 0-16 versus fmtp:101 0-15.

Regards,

Igor.

De : freeswitch-users-bounces at lists.freeswitch.org [mailto:freeswitch-users-bounces at lists.freeswitch.org] De la part de Ítalo Rossi
Envoyé : vendredi 3 février 2017 16:48
À : FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org>
Objet : Re: [Freeswitch-users] Transcoding G729 to PCMA fails

You need to match codecs on this leg.

Take a look at the sip trace compare your invite and the 200 ok from the other side 

Em sex, 3 de fev de 2017 às 12:34, Igor Potjevlesch <igor.potjevlesch at gmail.com <mailto:igor.potjevlesch at gmail.com> > escreveu:

freeswitch at internal> g729_info 

G.729A license available => 4

G.729A license allocated => 0

freeswitch at internal>

cat /usr/local/freeswitch/conf/vars.xml

[…]

        <X-PRE-PROCESS cmd="set" data="media_mix_inbound_outbound_codecs=true"/>

[…]

Everything looks good.

Interesting logs?? :

eae53f48-ea25-11e6-bfe9-83829a4c1ffe 2017-02-03 16:32:09.004855 [DEBUG] switch_core_media.c:4153 Audio Codec Compare [G729:18:8000:20:8000:1]/[PCMA:8:8000:20:64000:1]

eae53f48-ea25-11e6-bfe9-83829a4c1ffe 2017-02-03 16:32:09.004855 [DEBUG] switch_core_media.c:4069 Set telephone-event payload to 101 at 8000

eae53f48-ea25-11e6-bfe9-83829a4c1ffe 2017-02-03 16:32:09.004855 [DEBUG] switch_core_media.c:4473 sofia/out/<MYNUM>@<MYIP> Set 2833 dtmf send payload to 101 recv payload to 101

eae53f48-ea25-11e6-bfe9-83829a4c1ffe 2017-02-03 16:32:09.004855 [ERR] mod_sofia.c:2299 CODEC NEGOTIATION ERROR.  SDP:

Regards,

Igor.

De : freeswitch-users-bounces at lists.freeswitch.org <mailto:freeswitch-users-bounces at lists.freeswitch.org>  [mailto:freeswitch-users-bounces at lists.freeswitch.org <mailto:freeswitch-users-bounces at lists.freeswitch.org> ] De la part de Ítalo Rossi
Envoyé : vendredi 3 février 2017 16:09
À : FreeSWITCH Users Help <freeswitch-users at lists.freeswitch.org <mailto:freeswitch-users at lists.freeswitch.org> >
Objet : Re: [Freeswitch-users] Transcoding G729 to PCMA fails

What g729_info says?

Also make sure you have media_mix_inbound_outbound_codecs set to true on your vars.xml

Em sex, 3 de fev de 2017 às 05:53, Igor Potjevlesch <igor.potjevlesch at gmail.com <mailto:igor.potjevlesch at gmail.com> > escreveu:

Hello,

I don't figure out why I can't make my calls transcoded from PCMA to G729.

Here is the scenario: I send the call to external interface with G729. The call is properly sent to the leg B with PCMA. When the call is pick up by leg B, FS sends 488 to leg A after 200K/ACK with leg A.

The module mod_com_g729 is properly loaded and has channels available. Thanks for your advice to diagnose this.

Regards,

Igor.

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