asterisk users - Sep 2011 - Force a SIP friend to use a certain IP?

Suppose I have two IP aliases on one asterisk box.

I have to talk to SIP friend "A" using IP x.x.x.x and I have to talk
to
SIP friend  "B" using IP y.y.y.y.
(In case you're wondering, the reason is that we have two accounts with 
a service provider and different features and rates are tied to the two 
different accounts.)

So I was hoping I would be able to set the source IP that we use when 
talking to the two different SIP friends.  I see externip in general 
options, but is there nothing equivalent that can be set per user/peer?

> So I was hoping I would be able to set the source IP that we use when
> talking to the two different SIP friends.  I see externip in general
> options, but is there nothing equivalent that can be set per user/peer?
Hi,

as far as I know, you cant do this on a per peer basis.
I suppose you run two asterisk daemons, each one of them on a different
external IP. In this setup you can route calls from A over one asterisk
daemon and calls from B over the other asterisk daemon.

Sounds a little bit like an overkill scenario, but it woul work.


best regards,
Ruben

>> So I was hoping I would be able to set the source IP that we use when
>> talking to the two different SIP friends.  I see externip in general
>> options, but is there nothing equivalent that can be set per user/peer?
> Hi,
>
> as far as I know, you cant do this on a per peer basis.
> I suppose you run two asterisk daemons, each one of them on a different
> external IP. In this setup you can route calls from A over one asterisk
> daemon and calls from B over the other asterisk daemon.
>
> Sounds a little bit like an overkill scenario, but it woul work.
>
>
> best regards,
> Ruben
Thanks, I was afraid of that.

> -----Mensaje original-----
> De: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-
>
> Suppose I have two IP aliases on one asterisk box.
>
> I have to talk to SIP friend "A" using IP x.x.x.x and I have to
talk to
> SIP friend  "B" using IP y.y.y.y.
> (In case you're wondering, the reason is that we have two accounts with
> a service provider and different features and rates are tied to the two
> different accounts.)
>
> So I was hoping I would be able to set the source IP that we use when
> talking to the two different SIP friends.  I see externip in general
> options, but is there nothing equivalent that can be set per user/peer?
>
Perhaps it could be achieved configuring different newtwork interfaces (or
different ports) for the two peers (or two set of peers) and using iptables to
change the source address of outgoing packets through SNAT rules.

Best Regards,
Jos? Miguel



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