[asterisk-users] Parsing Area Code from CallerID

[Jonathan k. Creasy]

> -----Original Message-----
> From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
> bounces at lists.digium.com] On Behalf Of Bruce Ferrell
> Sent: Tuesday, December 19, 2006 12:00 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [asterisk-users] Parsing Area Code from CallerID
> 
> 
> John French wrote:
> > How would I parse the area code from this variable?
Number=2515551212
> > Sorry for the dense question, I don't seem to be able to find an
> > appropriate function for parsing left to right.
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> 
> NPA=${NUMBER:0:3}
> 
> --
> One day at a time, one second if that's what it takes


That works if the number is always NPA-NXX-XXXX. If you end up with
+1NPANXXXXXX or 1NPANXXXXXX then you don't have the right data. 

-Jonathan