[Asterisk-Users] chan_h323, Asterisk and DTMF issue

[asterisk at ebctech.com]

Hi folks,

I’m using chan_h323 to dial out to a gateway which connects me to the PSTN.
In order to use a menu system such my bank menu system, I have to set
dtmfmode=info in my sip.conf for my Cisco 7960 phone. However, dtmfmode=info
won’t work with Asterisk’s voicemail system. 

I’m using the g.729 codec for h323 and Asterisk. I’m told dtmfmode=inband
won’t work with g.729.  Is it possible to use dtmfmode=info with h323 and
access my Asterisk voicemail?

Summary:
dtmfmode = info  		; works with h323 not with Asterisk
Voicemail
dtmfmode = inband  	; works with h323 (with a flood of warnings) not
with Asterisk Voicemail  
dtmfmode = rfc2833 	; works with Asterisk Voicemail not with h323

Any help would be greatly appreciated.

Thanks,

Michael