[Asterisk-Users] AU PSTN Tone / Progress Detection

[Kimble Young]

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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