asterisk users - Sep 2006 - distinguishing users by their domain

In extensions.conf I want to implement a dial plan that distinguishes 
the users that wish to dial a PSTN number by their own domain, so that 
john@domain_A goes out to PSTN by a different DID than john@domain_B.

I tried the following line, but that doesn't distinguish between 
domains, and then if john@domain_A or john@domain_B dials some PSTN 
number, both calls goes out using same DID (did1):

exten => _[0-9]./john,1,Dial(SIP/${EXTEN}@did1,120)

I tried then using the following lines:

exten => _[0-9]./john@domain_A,1,Dial(SIP/${EXTEN}@did1,120)
exten => _[0-9]./john@domain_B,1,Dial(SIP/${EXTEN}@did2,120)

But those syntax doesn't work.
How can I do it? Any clues?

Thanks,
Ricardo.

My q too!!
I mean, simple extension numbers, 3000, 3001, etc, can be present in 
multiple pbxes(in any hosted pbx service).
I guess 'context' is a way, but it seems, in *, the dialplan(and hence 
the context) is decided by the callee digits. Any work arnd over this one?

cheerz
Ben.

Ricardo Carvalho wrote:
> In extensions.conf I want to implement a dial plan that distinguishes 
> the users that wish to dial a PSTN number by their own domain, so that 
> john@domain_A goes out to PSTN by a different DID than john@domain_B.
>
> I tried the following line, but that doesn't distinguish between 
> domains, and then if john@domain_A or john@domain_B dials some PSTN 
> number, both calls goes out using same DID (did1):
>
> exten => _[0-9]./john,1,Dial(SIP/${EXTEN}@did1,120)
>
> I tried then using the following lines:
>
> exten => _[0-9]./john@domain_A,1,Dial(SIP/${EXTEN}@did1,120)
> exten => _[0-9]./john@domain_B,1,Dial(SIP/${EXTEN}@did2,120)
>
> But those syntax doesn't work.
> How can I do it? Any clues?
>
> Thanks,
> Ricardo.
>
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So... does anybody know how can I do this?
Maybe using a way to distinguish users not by their username, but by 
other fields of SIP INVITE messages?

Regards,
Ricardo.






Ricardo Carvalho wrote:
> In extensions.conf I want to implement a dial plan that distinguishes 
> the users that wish to dial a PSTN number by their own domain, so that 
> john@domain_A goes out to PSTN by a different DID than john@domain_B.
>
> I tried the following line, but that doesn't distinguish between 
> domains, and then if john@domain_A or john@domain_B dials some PSTN 
> number, both calls goes out using same DID (did1):
>
> exten => _[0-9]./john,1,Dial(SIP/${EXTEN}@did1,120)
>
> I tried then using the following lines:
>
> exten => _[0-9]./john@domain_A,1,Dial(SIP/${EXTEN}@did1,120)
> exten => _[0-9]./john@domain_B,1,Dial(SIP/${EXTEN}@did2,120)
>
> But those syntax doesn't work.
> How can I do it? Any clues?
>
> Thanks,
> Ricardo.
>