/mcpDescription Restriction Cisco Unified Communications Manager Administration rejects BLF presence requests to a directory number that is associated with a hunt pilot. BLF Presence Requests The BLF on call list feature is not supported on the Cisco Unified IP Phone 7940 and Cisco Unified IP Phone 7960. BLF on Call List Feature The administrator ensures that the watcher is authorized to monitor the destination when configuring a BLF and SpeedDial. BLF presence group authorization does not apply to BLF and SpeedDials. Note BLF presence group authorization does not apply to any directory number or SIP URI that is configured as a BLF and Speed Dial that appears in a call list for phones that are running SIP. If there is an overlapping DN, where there is the same extension in different partitions, the presence notifications are selected based on the order of the partitions configured within the SUBSCRIBE CSS assigned to the device. For example, two BLF speed dials are configured on a phone. • Extension 1234 in the "internal" partition • Extension 1234 in the "external" partition Whichever partition is listed first within the SUBSCRIBE CSS is the one that will provide BLF presence to the subscribed devices. BLF and SpeedDials For Cisco Unified IP Phones with multiple lines, the phone uses the cached information that is associated with the line directory number for missed and placed calls to determine BLF presence authorization. If this call information is not present, the phone uses the primary line as the subscriber for BLF presence authorization. For BLF and SpeedDial buttons on Cisco Unified IP Phones with multiple lines, the phone uses the first available line as the subscriber. BLF Presence Authorization When a user monitors a directory number that is configured for Cisco Unified IP Phones 7960 and 7940 that are running SIP, the system displays a status icon for ‘not on the phone’ on the watcher device when the presence entity is off-hook (but not in a call connected state). These phones do not detect an off-hook status. For all other phone types, the system displays the status icon for ‘on the phone’ on the watcher device for an off-hook condition at the presence entity. Cisco Unified IP Phone BLF presence requests and responses must route to SIP trunks or routes that are associated with SIP trunks. The system rejects BLF presence requests routing to MGCP and H323 trunk devices. SIP Trunks For BLF presence-supported phones that are running SIP, you can configure directory numbers or SIP URIs as BLF and SpeedDial buttons. For BLF presence-supported phones that are running SCCP, you can only configure directory numbers as BLF and SpeedDial buttons. BLF Presence-supported Phones that are running SIP Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 542 Presence and Privacy Features BLF Presence Restrictions