The UC clients represent the video clients within the OpenScape 4000 solution.
The UC clients are registered to OpenScape 4000. The calls from UC clients will be
initiated via CSTA to OpenScape 4000.
Therefore, OpenScape 4000 must interpret and resolve SIP URI dialing within CSTA
accordingly.
OpenScape 4000 must accept and route SIP URI calls received from the UC Clients or
the OpenScape UC media server.