Inbound DID's will try the Primary and then the Secondary PBX.  The user will receive a 502 Service not available if both fail
Inbound DID's will try the Primary and then the Secondary PBX.  The user will receive a 502 Service not available if both fail

dOpensource/dsiprouter,dOpensource/dsiprouter,dOpensource/dsiprouter,dOpensource/dsiprouter,dOpensource/dsiprouter