We have a centralised call-processing design with 2 remote sites using IPT. The remote sites both have their own E1 gateways, with backup BRI lines for connectivity to the CCM in the event of a WAN failure. I would like to set up each sites CSS in the others, so that intra-office calls go over the WAN, however in the event of a WAN failure, automatically put the prefix onto the call and push it out through the local gateway. Does anyone know if this is actually possible?
Thanks for your thoughts,