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[markmorreny at gmail.com]

Hi all,

I am using Digium PCI board to receive PSTN call through regular phone
line. It is no problem for me to receive calls, but I am not able to
capture the destination number through the ZAP channel
exten => s, n, Verbose(1|destination to ${EXTEN} )


${EXTEN} returns 's' instead of the actual destination number. Since I have
multiple phone numbers, I want to be able to route different calls to
different places.

Is this possible to do with Asterisk?

Thanks,
Mark
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[eric at fnords.org]

Without knowing the line type, card model, etc, I doubt anyone can help
you. FXO signaled ports do not support receiving the dialed number.

mark morreny wrote:

[rob at hillis.dyndns.org]

The only method I'm familiar with for an analogue line to signal which
number was called is a very old service that loops the line first and
then dials the number. The only way to capture this would be to handle
the incoming line as a standard extension with a different context.
I've only run in to one of these services myself - and that was attached
to a legacy PABX. I seriously doubt you'd be able to order these
services any more.

If this is a standard PSTN service, the only way you know which number
has been called is by matching it against the zap channel that the call
has been received on. The ${EXTEN} variable won't tell you this as
you've already found out - you'll need to examine ${CHANNEL} and match
the channel to the connected DID yourself.

mark morreny wrote:

[rob at hillis.dyndns.org]

A standard PSTN line will not give you the number that is connected to
it - Asterisk has no way of knowing what it is. What I mean by matching
the zap channel to the number is that if you know that the phone number
123 is connected to Zap channel 1, then when you get a call in on Zap/1,
then the line that was called was 123.

An E1 line /can/ give you the details of the phone number that was
called, if your provider supplies it.
mark morreny wrote: