asterisk users - May 2004 - Rejecting Calls (SIT Tone/Invalid) Across PRI

Question regarding a callback application:

I have a client who wants to allow callers to dial a DID which connects over
a PRI to Asterisk.  Asterisk will be analyzing the ANI data from each call
to that DID and if it recognizes the ANI, it needs to effectively return an
"Invalid Number" or "Not Found" some-such message across the
PRI to prevent
the user from being billed.

Being a callback app, the system will then queue a callback to the party.

The question is... How do I make Asterisk tell the network to disregard the
billing and indicate to the caller that the callback has been scheduled?  Is
this possible?  Is this legal?

My fallback is simply to not answer the call if the ANI is recognized, then
queue the callback when the incoming attempt terminates (i.e. the caller
hangs up).

Steven Sokol
Owner/Manager
Sokol & Associates, LLC

Phone:  816.822.1807
IaxTel: 700.613.9004
Web:    http://www.sokol-associates.com

On Wed, 26 May 2004, Steven Sokol wrote:
> I have a client who wants to allow callers to dial a DID which connects
> over a PRI to Asterisk.  Asterisk will be analyzing the ANI data from
> each call to that DID and if it recognizes the ANI, it needs to
> effectively return an "Invalid Number" or "Not Found"
some-such message
> across the PRI to prevent the user from being billed.
I have been looking for the same thing but chan_zap seems to be programmed
to acknowledge all incoming calls that there is a matching entry in
extension.conf for, which means ringing tones will be given before
starting the execution of application commands. But if there is no entry
for a call it will be rejected.

For example:
exten => 123456/456789,1,Hangup
exten => 123456/789012,1,Hangup

Calls from 456789 or 789012 will be hangup after one ringing tone (you
could run a AGI script here). Calls from other numbers will be rejected
immediately.

Regards,
Tobias J?nsson