[asterisk-users] CHANNEL(t38passthrough) is 0

[Eric Wieling]

Setting directmedia=no does not help.  The calls still go through and the fax still fails after switching to T.38.  

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Eric Wieling
Sent: Thursday, December 27, 2012 10:49 AM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] CHANNEL(t38passthrough) is 0

I'm trying to get T.38 passthrough working on Asterisk 1.8.18.1.  It isn't working.   Calls go through and are answered, but the fax machines are unable to communicate.   I checked the value of CHANNEL(t38passthrough) and it seems to always be 0.   One side is Level 3 T.38 TN and the other side is an Adtran NetVanta with POTS ports.   What would cause Asterisk to not offer t38 passthrough on a channel?

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