Ryan McDaniel wrote: >> I have a very strange problem I'm hoping someone has encountered > already. >> I've scoured the internet for an answer to this one. My phone company >> provides no disconnect supervision. Hence I'm forced to use the > busydetect >> feature. I have a TDM400 with two FXO ports. If I call from an > internal >> extension to a landline and then hangup the landline Asterisk detects > the >> busy signal correctly and clears the line. If I call from an internal >> extension to a cell phone and then hangup the cell phone Asterisk will >> never >> detect the busy signal though it is clearly there. Asterisk will > happily >> sit there listening to the busy signal. I suspect that the busy signal >> styles are slightly different though it is undetectable to me. How can > I >> fix this??? It causes severe issues when a call is forwarded to a cell >> phone via the Zap interfaces as once you hangup the cell phone Asterisk >> never releases the channel. >> > > The landlines are with AT&T. The cell phones I'm testing with are > Cingular (AT&T subsidiary). There must be a subtle difference in the > busy signals. How can I make it catch busy signals from both carriers?
Have you tried calling AT&T and asking for call disconnect supervision? I realise that this can be a thankless and tedious endeavour, but it IS worth trying. There are almost no commercial switches that don't support this; it's a matter of activating it for the specific circuit in software. Particularly if you have a business line -- you can demand it. All PBXs need it if they use analog lines (and plenty still do) so I'm sure this is not an alien concept to AT&T. It's just a matter of finding the right Earthling there who can help you. This might be one of those times where a "beer with the technician" will get you some joy, if calling Repair doesn't give you any joy. -Stephen- _______________________________________________ --Bandwidth and Colocation provided by Easynews.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users