Summary:ASTERISK-14156: Asterisk rejects t38 reinvite when using local channels
Reporter:Mike Oliveras (moliveras)Labels:
Date Opened:2009-05-18 15:08:56Date Closed:2009-05-20 08:09:42
Versions:Frequency of
Environment:Attachments:( 0) t38LocalChannel.pcap
Description:I noticed this behavior when running and also found the same behavior with

If I set up a fax call incoming to asterisk doing t38 passthrough to another device, asterisk rejects the t38 reinvite with a "488 Not acceptable here". If I make the call not using local channels, it works.  I need to use local channels because of other feature interactions to this device that require it.

Can t38 support be added to local channels?  I will attach a packet capture; let me know if any additional information is needed and I will get it to you.
Comments:By: Gregory Hinton Nietsky (irroot) 2009-05-19 13:44:29

this is correct the Local channels cannot be "reinvited" so there is no T38 support on Local/ only on SIP/ this is not outside the scope of possibility if the Local/ was to have a t38state ...

By: Leif Madsen (lmadsen) 2009-05-20 07:26:08

Assigned to file for comment. Please set back to 'New' or some other appropriate state once you've had a chance to review. Thanks!

By: Joshua C. Colp (jcolp) 2009-05-20 08:09:41

This is unfortunately not possible for Asterisk 1.4, as it would require major changes to the way T38 works. This is certainly possible though in the 1.6 series and should already work with chan_local there.