350-801 Question #498: Real Exam Question with Answer & Explanation

Question

What are two valid features of Cisco Unified Survivable Remote Site Telephony? (Choose two.)

Options

• AAllows users to make calls with the same dial-plan as if connected to Cisco UCM cluster.
• BTo get SIP trunk failover capability for Cisco UCM.
• CUsing a Cisco router, it provides failover between these routers to ensure remote site operations.
• DOn a router registers all phones to that remote site router if link to the central Cisco UCM cluster
• EEnables failover between two or more Cisco UCM servers in a cluster if one server is placed at a

Explanation

Cisco Unified Survivable Remote Site Telephony (SRST) ensures remote site call processing continuity during a WAN outage, allowing phones to register to a local router and maintain a familiar dial plan.

Common mistakes.

• B. SRST provides call processing failover for IP phones, not SIP trunk failover for Cisco UCM, which is managed by other redundancy features.
• C. SRST provides call processing to phones during a central CUCM outage; it does not inherently provide failover between SRST-enabled routers themselves.
• E. SRST addresses redundancy for remote sites during a WAN outage to the central cluster, not failover between CUCM servers within the same cluster.

Concept tested. Cisco SRST features and operation

Reference. https://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srst/srst_9_0/overview/cucm_b_srst-90-overview.html

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