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