Which statement about a SUBSCRIBE calling search space is true?

Question

Options

• AIt allows MWIs to be triggered when a message is received in Cisco Unity Connection.
• BIt is used on an inbound SIP trunk from Cisco Unified Communications Manager IM & Presence
• CIt is used when adding a subscriber to Cisco Unity Connection.
• DIt is used within the Cisco Unified Communications Manager IM & Presence server to track status

• A
  18% (4)
• B
  73% (16)
• C
  5% (1)
• D
  5% (1)

Explanation

A SUBSCRIBE Calling Search Space (CSS) is configured on SIP trunks in Cisco Unified CM to control which directory numbers can be subscribed to for presence and line-state information. It is specifically used on the inbound SIP trunk from Cisco Unified Communications Manager IM and Presence Service (IM&P) to CUCM, allowing IM&P to subscribe to endpoint line states and presence. This enables CUCM to send NOTIFY messages back to IM&P when a user's phone status changes (e.g., on a call or available). It is not related to MWI triggers, Unity Connection subscriber setup, or IM&P status tracking internally.

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