/mcpDescription Restriction If a user presses the *81 DTMF code from a remote destination (either a smartphone or any other phone) to put a call on hold, the user desk phone displays the Resume softkey. However, the desk phone does not apply a timer for Desktop Call Pickup. The Resume key continues to be displayed even after the timeout that is configured for the end user to pick up the call elapses and the call is not dropped. Instead, users should hang up the call on the remote phone, which triggers the desk phone to apply the timer for desktop call pickup. (Use the Maximum Wait Time for Desk Pickup field on the End User Configuration window to change this setting.) Maximum Wait Timer for Desktop Call Pickup Cisco Unified Mobility does not work with multilevel precedence and preemption (MLPP). If a call is preempted with MLPP, Cisco Unified Mobility features are disabled for that call. Multilevel Precedence and Preemption Overlap sending patterns are not supported for the Intelligent Session Control feature. Overlap Sending Mobility does not support Q signaling (QSIG). Q Signaling QSIG path replacement is not supported. QSIG Path Replacement Enterprise feature access service parameters apply to standard phones and smartphones; however, smartphones generally use one-touch keys to send the appropriate codes. You must configure any smartphones that will be used with Cisco Unified Mobility to use either the default codes for enterprise feature access or the codes that are specified in the smartphone documentation. Service Parameters The following limitations apply to the session handoff feature: • Session handoff can take place only from mobile phone to desk phone. For session handoff from desk phone to mobile phone, the current remote destination pickup method specifies that you must use send call to mobile phone. • Only audio call session handoff is supported. Session Handoff If you have a hunt group configured and one or more of the directory numbers that the hunt group points toward also has Single Number Reach (SNR) enabled, the call does not extend to the SNR remote destinations unless all devices in the hunt group are logged in. For each device within the hunt group, the Logged Into Hunt Group check box must be checked within the Phone Configuration window for that device. Single Number Reach with Hunt Groups The Cisco Unified Mobility feature is supported only for primary rate interface (PRI) public switched telephone network (PSTN) connections. For SIP trunks, Cisco Unified Mobility is supported over IOS gateways or intercluster trunks. SIP Trunks Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 41 Remote Worker Features Cisco Unified Mobility Restrictions