Summary:ASTERISK-19181: SIP-Provider without "SIP/2.0 180 Ringing" no Audio when connected to DAHDi
Reporter:Simon Handschin (saimon)Labels:
Date Opened:2012-01-11 02:16:23.000-0600Date Closed:2018-01-02 08:30:33.000-0600
Versions: Frequency of
Environment:Attachments:( 0) myDebugLog
( 1) trace.txt
Description:If I use a SIP-Provider who sends a "SIP/2.0 180 Ringing" all is fine!

If I use a SIP-Provider who DOESN'T send a "SIP/2.0 180 Ringing" the call answers immediately but i have no audio. the other side rings and if they answers the call there is also no audio, if the hangup i receive the hangup command normaly.

[Matt Jordan]
Note from Walter below: this appears to be a problem with chan_dahdi not receiving a notification it needs if a 180 Ringing isn't sent to the bridged SIP channel.
Comments:By: Matt Jordan (mjordan) 2012-01-11 10:37:43.393-0600

Please provide the version of Asterisk you are currently using.

We also require a complete debug log to help triage the issue. This document will provide instructions on how to collect debugging logs from an Asterisk machine for the purpose of helping bug marshals troubleshoot an issue: https://wiki.asterisk.org/wiki/display/AST/Collecting+Debug+Information

By: Simon Handschin (saimon) 2012-02-10 08:08:36.412-0600

we use Asterisk and DAHDI Version: Echo Canceller: HWEC, MG2 with a Sangoma SS7 Card.

By: Matt Jordan (mjordan) 2012-02-10 08:15:48.349-0600

What you've attached is a SIP trace, which is useful, but is not what we requested - an Asterisk DEBUG log.  Please attach a DEBUG log illustrating the problem.

By: Simon Handschin (saimon) 2012-02-10 08:17:53.018-0600

here the debug like https://wiki.asterisk.org/wiki/display/AST/Collecting+Debug+Information

By: Simon Handschin (saimon) 2012-02-10 08:23:56.182-0600

log is in Attachments

By: Walter Doekes (wdoekes) 2012-02-16 08:37:51.475-0600

I looked into this a couple of minutes a while ago: it looked like the dahdi did not get into the right state without some ringing notification. This would make the subject somewhat misleading: quick guess says it's a dahdi problem (or a core problem).

By: Joshua C. Colp (jcolp) 2017-12-19 06:20:07.235-0600

Are you still experiencing this problem in a supported version of Asterisk?

By: Asterisk Team (asteriskteam) 2018-01-02 08:30:33.389-0600

Suspended due to lack of activity. This issue will be automatically re-opened if the reporter posts a comment. If you are not the reporter and would like this re-opened please create a new issue instead. If the new issue is related to this one a link will be created during the triage process. Further information on issue tracker usage can be found in the Asterisk Issue Guidlines [1].
[1] https://wiki.asterisk.org/wiki/display/AST/Asterisk+Issue+Guidelines