[Asterisk-Users] VoicemailMain can't read from phone keyboard!

[Eric Wieling aka ManxPower]

Wilson Pickett wrote:
>>This is almost ALWAYS a DTMF problem.  Usually a DTMF mode mismatch
>>between the phone and Asterisk.  For most phones you want to use RFC2833
>>for both the phone and for the entry for that phone in sip.conf.
> 
> 
> Yep, and the BT will only work right with certain codecs. I think it's
> iLBC that suddenly won't recognize DTMF while it works with the same
> setting in ULAW, for example.
> 
> I keep forgetting why I don't use iLBC on the BT, set it up, and then
> find DTMF b0rken with dtmfmode=info

As most people know inband DTMF only works with the ulaw and alaw 
codecs.  This is a codec issue, not an Asterisk issue.  I thought GS 
fixed the need for INFO mode DTMF.

--Eric


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