You want to avoid unnecessary interworking in Cisco TelePresence Video Communication Server, such as where a call between two H.323 endpoints is made over SIP, or vice versa. Which setting is recommended?
A. H.323 – SIP interworking modE. Reject
B. H.323 – SIP interworking modE. On
C. H.323 – SIP interworking modE. Registered only
D. H.323 – SIP interworking modE. Off
E. H.323 – SIP interworking modE. Variable
the VCS acts as a gateway between SIP and H.323 calls. The translation of calls from one protocol to the other is known as “interworking”.
By default, the VCS acts as a SIP-H.323 and H.323-SIP gateway but only if at least one of the endpoints that are involved in the call is locally registered. You can change this setting so that the VCS acts as a SIP-H.323 gateway regardless of whether the endpoints involved are locally registered. You also have the option to disable interworking completely.
The options for the H.323 SIP interworking mode are:
Off: the VCS does not act as a SIP-H.323 gateway.
Registered only: the VCS acts as a SIP-H.323 gateway but only if at least one of the endpoints is locally registered.
On: the VCS acts as a SIP-H.323 gateway regardless of whether the endpoints are locally registered.