[asterisk-users] Fax faling on PJSip

Joshua Colp jcolp at digium.com
Tue Jan 3 11:56:28 CST 2017

On Tue, Dec 20, 2016, at 12:21 PM, Bryant Zimmerman wrote:
> I am working on moving from version 11 to version 13 for my fax 
> applications.
>  We are bumping into an issue where the bulk of the T38 faxes are
>  failing.
> The sending test switch is reporting COMREC_ERR_TRANSMIT_PHASE
>  These same faxes succeed on the 11 version of asterisk.
>  I am wondering if there are any ideas? COMREC_ERR_TRANSMIT_PHASE
>  Both servers are running the same version of spandsp. The dialplan code
>  is 
> the same on both.
>  The only difference is the versions of asterisk and pjsip on the 13 
> platform.

The state machine used for T.38 and the implementation is the same
between both. There should be no problems faxing (and indeed I just
checked and the tests are passing for that). I'd suggest opening an
issue[1] and providing a trace. There may be a particular scenario where
it is falling apart.

[1] https://issues.asterisk.org/jira

Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org

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