asterisk users - Oct 2010 - Extension Exists

Hi,

When a VOIP user dials an external number, the calls are routed through our SIP
provider.

Is there a simple way to check whether the DDI exists locally before dialling
out to the sip provider?
Something like GotoIfExists(5551234 at incoming_calls)
Currently, I'm paying for all calls, regardless of whether they exist
locally.

All DDIs exist in the incoming_calls context.

Thanks
Dan
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From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Dan Journo
Sent: Monday, October 25, 2010 3:21 PM
To: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: [asterisk-users] Extension Exists

 

Hi,

 

When a VOIP user dials an external number, the calls are routed through our
SIP provider. 

 

Is there a simple way to check whether the DDI exists locally before
dialling out to the sip provider?

Something like GotoIfExists(5551234 at incoming_calls)

Currently, I'm paying for all calls, regardless of whether they exist
locally.

 

All DDIs exist in the incoming_calls context.

 

Thanks

Dan

 

Here you go - 

Exten => _X.,1,verbose(try local first)

Exten => _X.,n,Dial(SIP/${EXTEN},30,KkTt)

Exten => _X.,n,Dial(SIP/${EXTEN}@provider,60,KkTt)

 

If the local exten does not exist, it should fall through immediately to the
provider call.

 

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On 10-10-25 04:21 PM, Dan Journo wrote:
> Hi,
>
> When a VOIP user dials an external number, the calls are routed through
> our SIP provider.
>
> Is there a simple way to check whether the DDI exists locally before
> dialling out to the sip provider?
>
> Something like GotoIfExists(5551234 at incoming_calls)
Well this is really an implementation question. If your data was in a database 
you could use func_odbc to check if the DID was local.

You can check with VALID_EXTEN() to see if a particular extension exists 
locally. That's check the databse, so if you have a context that contains a
list
of your local DIDs you can check with that function.

If the DIDs are available as a list on a webpage you can use func_curl.

Using the DB_EXISTS() function could be used if storing in the Asterisk
database.

Those are some options.

Leif.

Thanks Leif,

Forgot I could do a db lookup for the ddi.

Dan