[asterisk-users] SIP Multi-Domain

[Eric "ManxPower" Wieling]

Jean-Marc Salsa wrote:
> Question is quite easy:
> 
> How am I supposed to configure Asteirsk to have the same extension, in 2
> differents domains.
> 
> In the general section of sip.conf, I add the domains,
> But how to say to Asterisk :
> user1 at domain1 > Pasword1
> user2 at domain2 > Pasword2

Short answer: You can't.

Long answer: An extension is NOT the same as a SIP device.  An extension 
is a way to map a number to specific device(s).  We use the MAC of the 
device as the SIP user ID.

This has been talked about many times.  See the mailing list archives.