[asterisk-users] Configuring Parallel SIP Trunks

[Jeff LaCoursiere]

On Tue, 1 Sep 2009, James Lamanna wrote:

> Hi,
> I'm trying to configure 2 parallel sip trunks between 2 boxes.
> However I seem to have the problem that when making a call from Box 2
> to Box 1, it sometimes
> says authentication failed because it is using the username of the other trunk.
>
> Here's my configuration:
>
> Box 1:
> [dp-dp2]
> type=peer
> username=dp-dp2
> secret=mysecret
> qualify=yes
> host=box.2.ip.address
> context=from-internal
>
> [e911-dp2]
> context=from-pstn
> host=box.2.ip.address
> qualify=yes
> secret=mysecret2
> type=peer
> username=e911-dp2
>
>
> Box 2:
>
> [dp-dp2]
> host=box.1.ip.address
> qualify=yes
> type=peer
> username=dp-dp2
> secret=mysecret
> context=from-pstn
>
> [e911-dp2]
> context=from-internal
> host=box.1.ip.address
> qualify=yes
> secret=mysecret2
> type=peer
> username=e911-dp2
>
> If I have both trunks up, I'll see in the log on Box 1, when calling
> from Box 2 -> Box 1:
> " username mismatch, have <e911-dp2>, digest has <dp-dp2>"
>
> How can I get both to co-exist?
>
> Thanks.
>
> -- James
>

Hi James,

Try changing the host idents to 'dynamic'.  I think the IP match may come 
first, though I don't know why it would be intermittent and not always a 
problem.  If that works you could limit each entry with appropriate 
permit/deny statements.

Cheers,

j