Knud Müller writes:
Is the LCR Module the right point to start, as I have not seen failover strategies?
check from trunk/modules/lcr/README if lcr gw selection algorithm is ok for you.
There are some questions left which are more detailed - if a carrier shows to fail often, I just want a few calls routed to that carrier, to determine if its working again. Is there any chance to include network/packet information into the decision too, like roundtrip times, jitter etc?
not in lcr module. there is also a blacklisting capability that may be useful for you. you may also want to check what carrierroute module offers.
-- juha