300-085 Question #260: Real Exam Question with Answer & Explanation

The correct answer is B. It is used on an inbound SIP trunk from Cisco Unified Communications Manager IM & Presence. The SUBSCRIBE calling search space in CUCM is applied to an inbound SIP trunk from IM and Presence to control which SIP SUBSCRIBE requests are permitted into the system.

Cisco Unified IM and Presence

Question

Which statement about a SUBSCRIBE calling search space is true?

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

Explanation

The SUBSCRIBE calling search space in CUCM is applied to an inbound SIP trunk from IM and Presence to control which SIP SUBSCRIBE requests are permitted into the system.

Common mistakes.

A. MWI triggering in Cisco Unity Connection depends on MWI on/off directory numbers and SIP integration configuration, not on the SUBSCRIBE calling search space defined in CUCM.
C. Adding a subscriber in Unity Connection involves user template settings, class of service, and mailbox configuration - none of which relate to the SUBSCRIBE calling search space in CUCM.
D. Tracking user status changes within the IM and Presence server is managed by the presence engine and SIP proxy components internally, not by the SUBSCRIBE calling search space on a CUCM SIP trunk.

Concept tested. CUCM SUBSCRIBE calling search space on SIP trunks

Reference. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/12_5_1/systemConfig/cucm_b_system-configuration-guide-1251/cucm_m_sip-trunk-security-profile.html

Topics

#SUBSCRIBE CSS#SIP trunk#calling search space#IM and Presence

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