The SPA-3000 is notorious for falsely detecting DTMF tones in regular voice, and when it "thinks" it hears DTMF, it will produce a short real DTMF tone that's only audible to the SIP side of the device, not the PSTN side, or out of band SIP DTMF message (dependent on how you have the device setup). I'm guessing you have your IVR setup so that a single keypress triggers it, and the SPA-3000 thinks it hears that key. I would suggest to not have any single key start your IVR, as the SPA-3000 only ever seems to incorrectly detect and generate one DTMF tone at a time (it never generates a sequence, just one random key's worth of DTMF).
Hope this helps, Andrew On Wed, Dec 9, 2009 at 7:35 AM, Ivan Stepaniuk <[email protected]> wrote: > Hello everybody, > > I have a very strange issue with a Linksys SPA-3000 (1 fxo + 1 fxs) used > as PSTN gateway to asterisk in a small office. Everything works just > fine, except that sometimes, and it seems that only for long incoming > calls, the IVR menu appears on the middle of the call(like a three way > call, call goes on with prompts playing over the parties). Dialing an > extension at the prompt at that time actually works but disconnects the > original extension (and transfers the PSTN leg to the new extension as > normally). > > At the CLI there is nothing but a new incoming call from the SPA, > exactly as the original call. > > It seems to happen with both asterisk 1.2 and 1.4, I am quite lost, Does > anyone know what could be causing this problem? > > > -- > Iván Stepaniuk > Alba Fotónica S.L. > www.albafotonica.com > > > _______________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
