I would like to know what's the behaviour in case of OCS Federation.
A company A with userA has a sip URI and a E164 phone number. A company B with userB has a sip URI and a E164 phone number.
userA wants to call userB, not through its SIP URI but using its E164 phone number.
IS OCS able to reverse look-up userB phone number in order to use Federation call through the Edge Servers or is the call automatically routed to PSTN ?
Reformulated question : E164 phone number reverse look-up is processed by Front End for users in the same forest : is it the same for federated users ?