Stuart,
Just use ISDN BRI. Only a few dollars more per month for 2 lines of ISDN than one phone line. There is certified equipment for Australia such as the fritz! and others.
POTS can be very unreliable in terms of quality and , of course, tone detection. Call progress is spot on perfect with ISDN. You can play music or a ringing tone to the caller until the exact moment the other end picks up.
Regards,
Kimble Young
Stuart Elvish wrote:
Hi,
Just wondering whether or not anyone in Australia has been able to get / create an accurate (or semi-accurate) tone detection system. I need to know when calls don't connect because the line is busy or they ring out, and as stated in the documentation the callprogress=yes in zapata.conf is pretty experimental.
My main problem is that when using the built in call progress indicator, it doesn't correctly detect the answered call unless the person on the other end has a pretty loud voice and answers several seconds before the channel is due to hang up because there has been no answer.
I would appreciate any help that we can get on this one as the only other choice we have is to go to PRI / E1 which is a more expensive way of dealing with the problem.
Kind Regards Stuart
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