[asterisk-users] Re: Can you explain why multiple registrationisan important (missing) feature ?

[Eric "ManxPower" Wieling]

Craig Guy wrote:
> I was afraid that may be the case - The issue I have with that approach 
> is how do you avoid manually mapping extensions to mac addresses in the 
> dialplan?  Assuming I have a PRI with 100did and I want to use the last 
> 4 digits of the DID as the internal extension, I want to use something 
> like below to handle the bulk of calls:
> 
> exten => _XXXXXXXX,1,Dial(SIP/${EXTEN:4},20)
> 
> How can this be accomplished if SIP usernames are mac addresses?, it 
> would seem to me that sip.conf is the correct place to map an extension 
> to a device, otherwise I would have an extensions.conf with a manual 
> entry for each extension making updating it a chore.

sip.conf is not the correct place to map extensions to devices. 
extensions.conf is is place to do that.  You are still stuck in the 
mindset that extension == device.

Part of running a PBX, any PBX, is having to map physical devices / 
ports to logical extensions.

We have to put in an exten => entry for each extension.  It's not that 
hard, and only has to be done once for each extension.