Shane wrote:
Hello,
Ther's probably a simple answer to this but I've searched
around and haven't located anything as yet. Is there a way
to have DTMF tones passed through Asterisk without it
messing with them? I am using a tdm21b card and when I
call an ivr system from the telephone handset (routed over
sip or iax2) such as telebanking, the ivr has trouble
recognizing tones. When I tested this with a remote party,
I was told tones were breaking up. For example, a long
press would result in a click, some silence and a small
dtmf on the remote end. Triggering a speed dial didn't go
well either as he heard only a few tones. I have
dtmfmode=inband in sip.conf and have tried relaxdtmf=yes in
zapata.conf.
I realize Asterisk does need to detect dtmf for things like
call parking but can it just pass the audio to the other
side with no regard for whether it's dtmf digits? IE. long
press results in long tone, etc.
I've been using asterisk for about three years now, the last two with a
tdm04b (4 fxo's), and haven't run into any problems like those noted
above. I'm using primarily Cisco 7960's defined with dtmfmode=rfc2833.
Asterisk accepts the sip pkt from the phone, and generate dtmf tones out
the tdm04b. As mentioned, never had a problem with it in several
different business ivr envrionments, airlines, credit card companies,
etc. (There might be some out there where it doesn't work, but haven't
found them yet.)
R.
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