/mcpBefore you begin Accept BLF Presence Requests from External Trunks and Applications, on page 538 Procedure Step 1 From Cisco Unified CM Administration, choose Call Routing > Class of Control > Calling Search Space. Step 2 In the Calling Search Space configuration window, choose the calling search space from the SUBSCRIBE Calling Search Space drop-down list. Step 3 Click Add New. Step 4 In the Name field, enter a name. Step 5 (Optional) In the Description field, enter a description to identify the calling search space. Step 6 From the Available Partitions list, select one or multiple partitions, and click the arrow keys. The selected partitions appear in the Selected Partitions list. Step 7 (Optional) To add or remove a partition from the Selected Partitions list, click the arrow keys next to the list box. Step 8 Click Save. All calling search spaces that you configure in Cisco Unified Communications Manager Administration appear in the SUBSCRIBE Calling Search Space drop-down list in the Trunk Configuration or Phone Configuration window. Configure a Phone Button Template for BLF and SpeedDial Buttons You can configure BLF and SpeedDial buttons for a phone or user device profile. After you apply the template to the phone or device profile (and save the phone or device profile configuration), the Add a new BLF SD link appears in the Association Information pane in Cisco Unified Communications Administration. If the template does not support BLF and SpeedDials, the Add a new BLF SD link appears in the Unassigned Associated Items pane. Note When an administrator decides to add or change a BLF and SpeedDial button for a SIP URI, the administrator ensures that the watcher is authorized to monitor that destination. If the system uses a SIP trunk to reach a SIP URI BLF target, the BLF presence group associated with the SIP trunk applies. You do not need to configure BLF presence groups or the Default Inter-Presence Group Subscription parameter for BLF and SpeedDials. Note Before you begin Configure a Calling Search Space for Presence Requests, on page 538 Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 539 Presence and Privacy Features Configure a Phone Button Template for BLF and SpeedDial Buttons