Implementing Cisco IP Telephony and Video Part 2 (CIPTV2, legacy) — Question 8

Which solution is needed to enable presence and extension mobility to branch office phones during a WAN failure?

Answer options

• A. SRST without MGCP fallback
• B. SRST with VoIP dial peers to Cisco Unified Communications Manager Express
• C. SRST with MGCP fallback
• D. Cisco Unified Communications Manager Express in SRST mode

Correct answer: C

Explanation

The correct answer is C, as SRST with MGCP fallback provides the necessary features for presence and extension mobility during WAN failures. Option A lacks MGCP fallback, which is essential for this functionality, while option B does not address the fallback requirement. Option D only offers limited capabilities compared to SRST with MGCP fallback.