300-070 · Question #290
An engineer has configured a comprehensive dial plan for a remote site with SRST on cisco unified communication manager. while simulating outage for the site, the engineer discovers that a srst…
The correct answer is D. dial peers on SRST Gateway. When CUCM is unreachable, SRST (Survivable Remote Site Telephony) allows phones to fall back and register directly to the local IOS gateway. In fallback mode, the gateway handles all call routing locally using its own dial peers-CUCM route patterns are completely bypassed. If…
Question
An engineer has configured a comprehensive dial plan for a remote site with SRST on cisco unified communication manager. while simulating outage for the site, the engineer discovers that a srst phone cannot dial a log distance number. Which configuration component must be assessed to troubleshoot this issue?
Options
- ATelephony registration configuration on SRST gateway
- BSRST configuration in cisco Unified CM
- Croute patterns on Cisco unified CM
- Ddial peers on SRST Gateway
How the community answered
(29 responses)- A14% (4)
- B7% (2)
- C34% (10)
- D45% (13)
Explanation
When CUCM is unreachable, SRST (Survivable Remote Site Telephony) allows phones to fall back and register directly to the local IOS gateway. In fallback mode, the gateway handles all call routing locally using its own dial peers-CUCM route patterns are completely bypassed. If an SRST phone cannot dial long-distance, the SRST gateway's dial peers (D) must be examined to ensure a POTS or VoIP dial peer exists with the correct destination pattern (e.g., 91...........) pointing to the correct voice port or ISDN interface. Route patterns on CUCM (C) are irrelevant during an outage. SRST configuration in CUCM (B) only governs what phones fall back and their line appearance, not outbound routing. Telephony registration (A) relates to whether phones register, not routing.
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