I get this error when I am trying to use g729 codecs on Asterisk 13 When I load “module load codec_g729.so” It load codec_g729.so But when I run “module show” to see all running modules, I realized the “Unknown” for codec_g729.so while other codecs had “core” as their tag. When I try to test Aste…

This error is the result of a conflict between the peer configuration and the Asterisk configuration for the peer. It is not the result of a missing codec translator. Asterisk can still pass codecs when there is no translator. Enable SIP debugging and the DEBUG log level and look at what is being…

This is what I get from the debug — (15 headers 12 lines) — — (15 headers 12 lines) — Sending to 198.101.50.4:5060 (no NAT) Sending to 198.101.50.4:5060 (no NAT) Using INVITE request as basis request - 19a05a4e7a15528b6212c45233aa3d43@198.101 …

That trace is incomplete. It would appear that you have allowguest=yes and you don’t have a matching peer or user for the other side. As such you are using the settings in the general section. They have told you they are only interested in receiving G.711 mu-law (and RFC2833 DTMF). You have obvi…

Yes, you are right, in the general section, I only enabled g729 to test for g729 and in the sip trunk that takes my extension, I only accept g729 also. When I enable other codecs such as alaw, ulaw, gsm, it works but when I force it to g729, it doesnt. Shouldnt g729 be the codecs that should work …

“host=dynamic” does not match any IP making the call, it tells chan_sip that a remote device is going to REGISTER to it to tell it its IP address. If that does not happen then the entry will have no IP address to match.

So for “host=dynamic” I have to register the extension in the sip.conf like [78768272]

You don’t register the extension in sip.conf. The term “register” in SIP means for a remote device to communicate, using SIP, and register its IP address. The device has to be configured to do so. If a device isn’t meant to register then you put its IP address explicitly using the host line.

Okay I understand now, I get host logic clearly now. Also in my sip.conf file, allowing alaw, ulaw, gsm and g729 makes the audio works, If I disable all codecs except g729, I get the “No compatible codecs” error. Shouldnt g729 works across all extensions or devices?

That controls what codecs are allowed on the Asterisk side. It’s still up to the device to support and allow the codecs.

Asterisk : No compatible codecs, not accepting this offer!

Asterisk

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Asterisk : No compatible codecs, not accepting this offer!

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