These appear to be a common problems, but after spending half a day reading the wiki and list archives I have not gained much useful knowledge beyond the fact that these are a common problems. I am hoping for some suggestions or pointers to further info.
I have an ivr in my incoming context that does a background() and... well, it is an ivr, no need to explain that, I guess.
So, testing locally, it works wonderfully. Testing through my DID, provided by IPKall, it is decidedly hit-or-miss. The digits seem to be either not recognized at all or recognized incorrectly better than half the time. Most often, I get the "invalid extension" playback that I have assigned to the i,1 exten. For a while, I had two test extensions, one 2000 and one 2001. Dialing 2001 usually sent me to 2000 instead. What is making it hard for me to debug is that it *sometimes* works, recognizing the extension I dialed correctly.
My peer entry in sip.conf for IPKall contains dtmfmode=rfc2833 as per their recommendation. I have tried setting relaxedtmf=yes in the general section, with no noticeable change. I turned it off again, since the problem seems to be too much relaxation in any case. Looking at the console, I dial 7056 and it sees 7055, I dial 7056 again and it sees 75, I dial 7056 a third time and it sees 7055556, etc. Seems random and all over the place. Packet loss and/or ordering? Aside from the dtmf issue, incoming calls on the DID work fine and sound excellent.
Another issue that may or may not be related, but that I would like to solve, is that when I flash the switch to initiate a three-way call and dial a number, when I flash back to the original call the ringing on the second call stops. I just hear silence until the call connects. When the call does connect, I can send no dtmf at all to whatever is at the other end. To put it another way... You call me. I want to play you a message on my voicemail, say at the office. I flash the hook and get a dial tone, dial my work VM number, and the call starts ringing. I flash back, and the ringing stops. We listen to the silence together until the VM system picks up, but at that point neither of us can send dtmf to log in. (The call works normally otherwise, audio in both directions, etc.)
I am sure the answers to these questions require only a basic understanding of the way signaling and bridging work over and across the different technologies, but I am having a really hard time acquiring that understanding. I would be grateful for any help.
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