Hi Duncan, On Wed, Jan 12, 2011 at 10:13 AM, Duncan Turnbull <dun...@e-simple.co.nz> wrote: > Hi Thorsten > > Thanks very much, at this point my preference is rfc2833 but I will try some > other options. > > The system is generating audible tones (that I can hear), although I think > the audio is generated by the last sip device in the network so if thats so I > don't have any control of it. Probably then I have to go to inband to get > some control back, I am not sure what I lose from this, or change upstream > provider (although the current provider works from a different system)
In my DTMF experience I have found a few IVRs and conference systems out there that won't accept my DTMF, even though its DTMF that I can see going out over PRI channels. My guess is that these systems use too tight of a duration window on their DTMF detectors. In your case I'm guessing that for some reason the SIP DTMF tones are coming out with too short of a duration. I believe you can fiddle with the dtmf tone duration and spacing in channel.c but I don't know if that will fix the issue. Is it possible to get the DTMF specs from the manufacturer of the conference system? -- James -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
