[Asterisk-Users] Fail to detect DTMF over direct ISDN pri link

[Sylvain Gagnon]

Hello,
I'm using Asterisk (latest CVS head) to perform outbound call as
robot/testing tool for an IVR platform, with a Wildcard T100P configure as
ISDN Pri.
For develop the exten context script I was using a real PSTN ISDN Megalink
(DMS100) to reach the platform and my script was able to correctly detected
the DTMF tone send back by the platform to synchronize the script.
But for load test, I want to used a direct ISDN link with the platform,
without to change anything at the Asterix side, I configure the platform to
be the ISDN Network side (DMS100) with a twist cable. The D-Channel can up;
I am able to perform call, except Asterisk doesn't detect any DTMF anymore?
Why? What is the relation with the ISDN link?
I use the "monitor" command to record the call, and I really hear the DTMF
tone correctly...
I try to put relaxdtmf=yes in the Zapata.conf, but no success....
Thanks for any help or suggestion to diagnose this problem.

Sylvain Gagnon
Speech Technology Integrator
BCE Elix
Email: sylvain.gagnon at bceelix.com
 

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