[Asterisk-Users] Interesting Dial-Plan Question

[Jonathan k. Creasy]

Just appending the area code variable is not always going to be correct.
You will need to lookup (google local calling guide) the proper NPA for
the NXX you are dialing. For example, in Louisville, Ky if you dial
948-1592 you will actually reach 812-948-1592 instead of 502-948-1592
even though your callerid number would be 502-NXX-XXXX. 

I have a script I'm working on that does this via an agi script, it
looks up the 7 digit dialing rules for a NPA-NXX combination and caches
the results so you don't have to do a lookup for every call. I'll post
it on the wiki when I'm done. It works but I still need to test it and
document it a little better. It is based on some scripts by other people
that I combined together. 

-Jonathan

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Matt
> Sent: Thursday, April 27, 2006 8:54 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] Interesting Dial-Plan Question
> 
> Eric,
> Yes.. I am setting calleridnum to be their phone number.   And your
> example is peachy... except for the fact that it assumes I want to go
> out ZAP/g1!!
> 
> My problem is I have a very intricite routing plan that routes that
> call out several different carriers depending on what you dialed.
> (Long Distance, international, local, etc).
> 
> The way it works now is the dialplan just looks at the number you
> dialed and routes based on that.   I guess what I am asking is.... in
> theory I should be able to do:
> 
> Look at origination number.  Take first 3 digits and put into
> variable.  So 5705551212 becomes 570 in ${AREACODE}.
> 
> Now, look at the number we dialed.  If it is (and this is where I am a
> little unclear on what to do) 7 digits long then we append the
> ${AREACODE} variable.   Else, we send it through to the dialplan as
> is.
> 
> > exten => _NXXXXXX,1,Dial(Zap/g1/${CALLERIDNUM::0:3}${EXTEN})
> >
> > This assumes that you set the user's Caller*ID number to be their
> > telephone number.  It takes the first 3 digits of their CALLERIDNUM
and
> > prepends it to the number they dialed.
> >
> > See README.variables.
> >
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