Cisco
300-085 · Question #33
300-085 Question #33: Real Exam Question with Answer & Explanation
The correct answer is B: Presence Gateway. The Presence Gateway must be configured in Cisco Unified Communications Manager to allow Cisco Unified Presence to subscribe to and receive phone availability updates from users via SIP SUBSCRIBE/NOTIFY.
Cisco Unified IM and Presence
Question
Which device needs to be configured to allow Cisco Unified Presence to receive phone availability updates from subscribed users?
Options
- AH.323 Trunk
- BPresence Gateway
- CMGCP Gateway
- DSIP Cisco Unified Personal Communicator Gateway
- ECTI Gateway
Explanation
The Presence Gateway must be configured in Cisco Unified Communications Manager to allow Cisco Unified Presence to subscribe to and receive phone availability updates from users via SIP SUBSCRIBE/NOTIFY.
Common mistakes.
- A. An H.323 Trunk is used for H.323 voice call routing between systems and does not support the SIP-based presence subscription mechanism that CUP requires.
- C. An MGCP Gateway is used to control PSTN media gateway devices and has no role in delivering presence or phone availability data to Cisco Unified Presence.
- D. The SIP Cisco Unified Personal Communicator Gateway handles SIP signaling between the CUPC client and CUCM, and is not the device responsible for publishing phone availability updates to CUP.
- E. A CTI Gateway interfaces with CTI-based applications for call control and monitoring, and is not configured as the source of phone availability updates for Cisco Unified Presence.
Concept tested. Presence Gateway configuration for phone availability subscriptions
Topics
#Presence Gateway#phone availability#presence subscription#configuration
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