[asterisk-users] SPA 3000 won't relay DTMF to doorphone

[Julio Arruda]

Eric "ManxPower" Wieling wrote:
> Doug Crompton wrote:
>> The spa3000 does not play well with Asterisk with dtmf rfc2833 signaling.
>> Set BOTH the sip.conf AND the spa3000 to inband for DTMF. That would be
>> the line1 tab on spa3000. This applies to the fxo (pstn) also if you are
>> using it for such things as ivr's.
> 
> This will only work if you are using ULAW or ALAW codecs.  All other 
> codecs will distort inband DTMF.

I've been using INFO in a SPA 3000 for some time, seems to work fine (is 
not heavy usage, but..)