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Collaboration, Voice & AV · Intermediate

Cisco Unified Communications Manager Subscriber

A CUCM cluster node that holds a replicated database copy and typically performs call processing, TFTP or music on hold.

Definition

Subscribers receive a database copy from the publisher and run services such as CallManager (call processing), TFTP, CTIManager and IP Voice Media Streaming. Endpoints register to subscribers listed in their CUCM group, typically as primary and backup pairs for redundancy. Services are activated per node through Cisco Unified Serviceability.

Example

Phones in Building A register to subscriber SUB1 with SUB2 as backup, as defined in their CUCM group.

Exam tip

Call-processing redundancy comes from subscribers listed in a CUCM group, not from the publisher.

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