[asterisk-users] Determining invalid extensions.

[Leo Ann Boon]

Phil Finkler wrote:
>
> Hi all,
>
> I’m trying to incorporate using the i extension in my callplan to 
> determine if someone enters an invalid extension. My internal 
> extensions are all 3 digits (100-104). The problem is, the callplan 
> doesn’t see that say, extension 600 is invalid, it just goes back to 
> the beginning of the callplan and repeats. If I enter a single digit, 
> it works perfectly. Anyone have any ideas? Here’s the incoming callplan.
>
It's because 600 will match _XX.

Why don't you just use the 's' extension, instead of '_XX.'?

Leo