Cisco 400-051 Exam

Which design restriction applies to Cisco Unified Communications Manager Session Management Edition clustering over the WAN deployment with extended round-trip times in Cisco Unified CM 9.1 and later releases?

  • A. SIP and H.323 intercluster trunks are supported.
  • B. Only SIP trunk is supported.
  • C. SIP trunks and H.323 gateways are supported.
  • D. A minimum of 1.544 Mb/s bandwidth is required for all traffic between any two nodes in the cluster.
  • E. Only RSVP agents can be configured and registered to the SME cluster as media resources.
Answer: Option B.

Using only SIP trunks in the SME cluster allows you to deploy a “media transparent” cluster where media resources, when required, are inserted by the end or leaf Unified Communications system and never by SME. Using only SIP trunks also allows you to use extended round trip times (RTTs) between SME nodes when clustering over the WAN.

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