[asterisk-users] DTMF problems during a message play

[Barton Fisher]

I'm using the latest asterisk-1.4.26.2 and no zaptel trunks used, all SIP. 

I have one user that is having problems once he connects to asterisk. 
He's dialing from his home phone (pstn) to a Vitelity DID (SIP Trunk) 
which goes to my asterisk  IVR. 

If he presses a dtmf during any message, the press is ignored unless the 
press was a #, 0 or *.  Otherwise, he needs to wait for the message to 
stop before the press is hear.

I've tried all the suggestions found searching the wiki, so I ask here 
if there is something else I can try.  The Vitelity trunk is set up as:

dtmfmode=rfc2833
disallow=all
allow=ulaw

Thanks, Bart
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