[asterisk-users] What don't I get about SIP?

[Dave Fullerton]

Mike wrote:
> I've been running into an issue with my Polycom 501 and Asterisk.
>  
> I realized, after much mucking around, that when I dial a number (and press
> the send key) that is invalid , but could still match an Asterisk pattern
> (example: I dial 567, which is not a valid extension, but my diaplan accepts
> _567XXXX as a pattern) instead of sending the call as is and ultimately
> failing, the phone is "intelligent enough" to sit and wait for extra digits
> in case I meant to dial 567111.
>  
> Now thats a problem for me.  How can I make Asterisk (or the 501) treat the
> attempted extension 567 as a valid try and let Asterisk handle the error
> ?(instead of the phone trying to do what it think is best and handling the
> error on it's own).
>  
> Is there an Asterisk setting for that?
> Failing that, is there a Polycom setting to disable this "intelligent" error
> handling?
>  
>  
> Mike

You want to look at the dialplan section in your sip config file or on 
the device's web config. Specifically the dialplan.digitmap and 
dialplan.impossibleMatchHandling settings. (These are explained in 
detail in the Admin Guide available on polycom's website). If you don't 
want the phone to do any dial plan matching you should make the digitmap 
accept any dial string (ie ".") and set your timeouts appropriately.

-Dave