On Jun 8, 2006, at 3:13 AM, Peter J Dean wrote:
I have an issue with DTMF. DTMF is being partly recognised by some
external IVR systems (banks, billing, etc), other IVR systems have
intermittent issues. Call our VSP directly and using their IVR system
without issue, and our internal IVR works just fine. Currently i have
all voip devices using RFC2833, which is what is recommended, and thus
the sip.conf file has dtmfmode=rfc2833 and relaxdtmf=yes.
I have not seen any information that clearly defines the purpose of
the relaxdtmf parameter in the sip.conf file, and wondering of
flicking it from yes to no will have an impact, and if so what sort of
impact will it have?
Dunno about that, but usually the gain of the output is the most likely
source for this kind of intermittent issue. If you can tweak your
output level a hair each way and retest, you might find you are ok.
Just a thought,
marty
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