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

[Julio Arruda]

Doug,
You are saying that RFC2833 somehow doesn't work if you have the 
Asterisk AND at a distinct time (still within the same call), the callee 
to see the DTMF, correct ? Would this be in any case ? (meaning, if the 
voice path is going via the Asterisk or UA to UA directly ?)

I've my spa3k right now somewhat far :-), and I can't test it, but you 
know by any chance if SIP INFO would suffer from the same curse :-) ?
 From my limited understand, a big difference in this case is that 
RFC2833 really is "in the RTP stream, but is not voice payload", while 
with SIP INFO, is done 100% out-of-band.



Doug Crompton wrote:
> I am using spa3000 hardware - 2.0.1(5673) firmware - 3.1.3(GWa)
> I have used newer firmwares but find that 3.1.3 had less echo problems.
> 
> Connect a real analog phone to spa3000 fxs.  Call it from another source,
> when connected send DTMF tones from that source. You should hear at least
> 100ms or more of the tone. inband should work. I suspect you are using
> alaw or ulaw codecs. There is really no reason to use anything else. When
> it does not work you will hear nothing more then a click or an ocassional
> to short tone.
> 
> Another thing to check is that you should not be using any transfer
> options in your dial statement (t or T or other special features.
> 
> You really have to listen to this to check it and make changes. Be sure to
> restart both spa3000 and asterisk when you make changes. Otherwise you can
> get fooled.
> 
> If you are making the call from the spa3000 fxo to fxs, you need to have
> inband in BOTH.
> 
> This is a known bug in Asterisk<>spa3000 for dtmf. I think the problem is
> somewhat shared but improvements in 1.4 may gelp or fic the problem. I am
> using 1.2 so I cannot answer that.
> 
> Basically when using the spa3000 you have to make the choice of wether you
> want to be able to use dtmf features (transfer etc.)OR have the capability
> to send DTMF to or from the caller or callee. you really can't have both.
> Thus inband vs. rfc2833. I chose inband so I can interact with called
> ivr's and call in from pstn and access my VM.
> 
> Doug
> 
> 
> On Fri, 12 Jan 2007, Louis-David Mitterrand wrote:
> 
>> On Fri, Jan 12, 2007 at 10:58:16AM -0500, 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.
>> Thanks for your suggestion. We tried that without success (using firmware
>> 3.1.7(GWc))
>>
>> Do you think an upgrade to 3.1.10 might be warranted?