I have a VOIP line that has call waiting. It is terminated at a Sipura 3000 and the POTS side of that device connects to an FXO port in my * box. I also have a POTS/PSTN line that terminates in another FXO port on my * box.
There are two FXS ports which feed cordless phones. I'm using the Zaptel TDM400 card.
This gives 2 extensions + 2 lines in/out and the VOIP line has call waiting.
This is the problem:
Asterisk (or Zaptel) only interprets the flash from a handset to mean "switch between FXO cards". Or at least I think that's what's happening.
If I'm on an extension and using the VOIP line, and a call comes in on the POTS line, I get the audible beep and I can answer it by pressing flash on the extension.
However, if I'm on the VOIP line and another call is placed to the VOIP number, I hear the beep, but pressing flash doesn't answer it. Instead it gives me a dial tone. Pressing flash again gets me back to the original VOIP call but there is no way to answer the call waiting on the VOIP line.
What I'm looking for is a way to tell * not to interpret the flash and instead pass it out the line. I can always answer non-call-waiting incomming calls on the other extension. I'd like to be able to use flash for signaling the VOIP (upstream?) to switch to the callwaiting call and then back as needed.
I tried setting callwaiting=no in zapata.conf and restarting * but that didn't have the desired effect. I think it prevented me from hearing an audible beep when one line and extension were in use and a call came in the other line... that's okay. But it didn't help answer the callwaiting call on the voip line.
I need a way to tell * not to interpret the flash, and instead, pass it out the line connected to this extension.
Any ideas?
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