asterisk users - Sep 2010 - Losing first DTMF digit (with ASR)

I'm having a wierd problem.  Somewhere around 1-2% of the time, the
first DTMF digit dialed gets dropped.  This is occurring during a
SpeechBackground application call.  If the caller reenters the digits
when given a second chance, all is OK.

Any suggestions how to debug this intermittent problem?

>-----Original Message-----
>From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Richard
Kenner
>Subject: [asterisk-users] Losing first DTMF digit (with ASR)
>I'm having a wierd problem.  Somewhere around 1-2% of the time, the
first DTMF digit dialed gets dropped.  This is occurring during a
SpeechBackground application call.  If the caller reenters the digits
when given a second chance, all is OK.
>Any suggestions how to debug this intermittent problem?
Is the message played very long/short?  I play a lot of my speechbackground
messages with beep in front (speechbackground(beep&foo)) so my user
doesn't
start hitting DTMF until the message starts playing.

Richard

Who is the carrier that the calls are flowing in from?

Bruamt

----------------------------------------
 From: kenner at gnat.com (Richard Kenner)

I'm having a wierd problem. Somewhere around 1-2% of the time, the
first DTMF digit dialed gets dropped. This is occurring during a
SpeechBackground application call. If the caller reenters the digits
when given a second chance, all is OK.

Any suggestions how to debug this intermittent problem?

-- 


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I have seen simalar issues with some audiocodes gear. I adjusted the early 
media options on the pri in the audiocodes gateway and that fixed my 
issues. We have also seen this when calls come in from Level 3 toll free 
some times their gatways screw with things. We found adding an manual 
answer and then a few seconds before the prompts solve the issue. Somthing 
about how Level 3 injects rfc dtmf and some packet time stamp issues.

Bryant

----------------------------------------
 From: kenner at gnat.com (Richard Kenner)
Sent: Tuesday, September 07, 2010 3:56 PM
To: asterisk-users at lists.digium.com
Subject: Re: [asterisk-users] Losing first DTMF digit (with ASR)
> Who is the carrier that the calls are flowing in from?
It's a Paetec PRI into an NEC SV8300, then QSIG from there to Asterisk.

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