A large Enterprise is using an Avaya Aura® Core. An Avaya SIP Endpoint, one-X® Communicator, controlled by Avaya Aura® Communication Manager (CM), has been configured with three feature buttons, but none of the buttons appear on the telephone interface The telephone shows successful registration with Avaya Aura® Session Manager (SM) at the SIP Level.

A large Enterprise is using an Avaya Aura® Core. An Avaya SIP Endpoint, one-X® Communicator, controlled by Avaya Aura® Communication Manager (CM), has been configured with three feature buttons, but none of the buttons appear on the telephone interface The telephone shows successful registration with Avaya Aura® Session Manager (SM) at the SIP Level.
A . The SM Server is down.
B . The SIP Signaling Group between SM and CM is down
C . The telephone is pointing to CM instead of SM for registration.
D . CM has no DSP Resources available
E . The Application Sequence for CM has not been selected for that extension in SM

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Answer: B