Robert Rozman
2005-Jun-21 07:24 UTC
[Asterisk-Users] GSM ISDN gateway to quadbri NT port under bristuffed Asterisk - where to set gain (I have unreliable inband dtmf recognition )?
Hi, I'm getting unreliable dtmf recognition (it works fine for 4-5 digits, errors (duplicates) on more), when transferred inband from gsm gateway to NT port of quadbri under bristuffed Asterisk..... Since Asterisk is claimed to have good dtmf recognizer, I suspect there are some settings to workarouned... I've tried dtmf relax, but didn't help, so I suspect gain settings.... Is there any other possible cause of unreliable dtmf inband recognition ? Where can I set gain on voice channel (I guess majority of settings under bristuff in zaptel.conf are dummy) ? Any other advice on this problem or similar experience ? Thanks in advance, regards, Rob.
Steve Underwood
2005-Jun-21 09:03 UTC
[Asterisk-Users] GSM ISDN gateway to quadbri NT port under bristuffed Asterisk - where to set gain (I have unreliable inband dtmf recognition )?
Robert Rozman wrote:> Hi, > > I'm getting unreliable dtmf recognition (it works fine for 4-5 digits, > errors (duplicates) on more), when transferred inband from gsm gateway > to NT port of quadbri under bristuffed Asterisk..... > > Since Asterisk is claimed to have good dtmf recognizer, I suspect > there are some settings to workarouned... I've tried dtmf relax, but > didn't help, so I suspect gain settings.... > > Is there any other possible cause of unreliable dtmf inband > recognition ? Where can I set gain on voice channel (I guess majority > of settings under bristuff in zaptel.conf are dummy) ? > > Any other advice on this problem or similar experience ? > > Thanks in advance,I kind of amazed if works at all when getting DTMF out of a GSM phone. You really shouldn't expect it to. Regards, Steve
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