While any use of loopback can be considered abuse, that is how I solve this issue.  I use loopback for each dialed # and then in the dialplan use mod_lcr to build a dialstring that does failover in order of cost.

So:

 <action application="bridge"
data="sofia/SIP_PROVIDER_1/6095551234,sofia/SIP_PROVIDER_1/7325551234"/>

becomes

 <action application="bridge"
data="loopback/6095551234,loopback/7325551234"/>

In the dialplan you then match on those (just regular 10digit dialing) and do your normal failover dialstring.  Again, I do this with mod_lcr but that isn't necessary.

<action application="bridge" data="sofia/gw1/$1|sofia/gw2/$2..."/>


On Sat, Aug 8, 2009 at 5:59 AM, Phillip Jones <pjintheusa@gmail.com> wrote:
Hi there,

I am trying to implement a scenario where I can terminate calls to
multiple destinations AND have termination carrier fail over.
Currently I can see how to do one or the other. But not both.

Multiple destinations is easy:

 <action application="bridge"
data="sofia/SIP_PROVIDER_1/6095551234,sofia/SIP_PROVIDER_1/7325551234"/>

Failover appears to use the same mechanism:

<action application="bridge"
data="sofia/gateway/primary/blah|sofia/gateway/secondary/blah"/>

I can not get my head around how use these together, such that:


- 6095551234 is dialed through SIP_PROVIDER_1
- if NO_ROUTE_DESTINATION then dial 6095551234  through SIP_PROVIDER_2
- Called party does not answer
7325551234 is dialed through SIP_PROVIDER_1
- if NO_ROUTE_DESTINATION then dial 7325551234 through SIP_PROVIDER_2
- Called party answers


This must be a fairly common requirement so any ideas on what I might
be missing would be very welcome.

Thanks


Phillip Jones

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-Rupa