Which solution is needed to enable presence and extension mobility to branch office phones during a WAN failure?
Which solution is needed to enable presence and extension mobility to branch office phones during a WAN failure?
To enable presence and extension mobility to branch office phones during a WAN failure, Cisco Unified Communications Manager Express in SRST mode is the required solution. This mode provides extended capabilities such as presence and Cisco Extension Mobility, which are not available in traditional SRST setups. By configuring the branch office phones to use Cisco Unified Communications Manager Express in SRST mode, these features can be maintained even during WAN outages.
correct answer: D Explanation:CUCM Express in Cisco Unified SRST mode provides more features to a smaller maximum number of IP Phones by falling back to CUCM Express mode. The main feature enhancements include Presence, Cisco Extension Mobility, and support of local voice-mail integrations