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350-801 · Question #301

Which behavior occurs when Cisco UCM has a CallManager group that consists of two subscribers?

The correct answer is C. Endpoints attempt to register with the top subscriber in the list. In a Cisco UCM CallManager group consisting of two subscribers, endpoints will attempt to register with the subscriber listed first in the group's prioritized list.

On-Premises Call Control

Question

Which behavior occurs when Cisco UCM has a CallManager group that consists of two subscribers?

Options

  • AEndpoints attempt to register with both subscribers in a load-balanced method.
  • BEndpoints attempt to register with the bottom subscriber in the list.
  • CEndpoints attempt to register with the top subscriber in the list.
  • DIf a subscriber is rebooted, endpoints deregister until the rebooted system is back in service.

How the community answered

(31 responses)
  • A
    3% (1)
  • B
    6% (2)
  • C
    87% (27)
  • D
    3% (1)

Why each option

In a Cisco UCM CallManager group consisting of two subscribers, endpoints will attempt to register with the subscriber listed first in the group's prioritized list.

AEndpoints attempt to register with both subscribers in a load-balanced method.

Endpoints in a CallManager group follow a prioritized list for registration and do not load-balance their registrations across subscribers.

BEndpoints attempt to register with the bottom subscriber in the list.

Endpoints attempt to register with the first (top) subscriber in the CallManager group list, not the bottom one.

CEndpoints attempt to register with the top subscriber in the list.Correct

Endpoints configured with a CallManager group will always attempt to register with the primary subscriber, which is the top-listed server in that group, providing a prioritized failover mechanism rather than load balancing.

DIf a subscriber is rebooted, endpoints deregister until the rebooted system is back in service.

If a subscriber is rebooted, endpoints will deregister but will then attempt to register with the next available subscriber in their CallManager group, not necessarily wait for the rebooted system to return.

Concept tested: CallManager group registration behavior

Source: https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/admin/12_5_1SU1/systemConfig/cucm_b_system-configuration-guide-1251su1/cucm_b_system-configuration-guide-1251su1_chapter_0100.html

Topics

#Cisco UCM#CallManager Group#Endpoint Registration#Server Priority

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