/mcpStep 8 (Optional) Check the Send Presentation Name and Number only in the FROM header and not in the other identity headers check box, if you want to send presentation information that is configured on the SIP Trunk only to FROM header. Step 9 Configure any additional fields in the Trunk Configuration window.For more information on the fields and their configuration options, see Online Help. Step 10 Click Save. Intercluster SME Call Flows The Cisco Unified Communications Manager Session Management Edition software is same as the Cisco Unified Communications Manager used mainly for a call routing between clusters or various devices. With this release, Cisco Unified Communications Manager supports the intercluster SME calls. Incoming Calls Let us assume a user from a PSTN network initiates a call with Enable External Presentation Name and Number enabled in its SIP profile. If Display External Presentation Name and Number service parameter is set to True, then Cisco Unified Communications Manager sends the presentation number information to the X-Cisco-Presentation header and displays on the called device. The FROM and PAID headers contains the identity of the user that is the user's DN or DDI. If Display External Presentation Name and Number service parameter is set to False, then Cisco Unified Communications Manager sends the presentation number information to the X-Cisco-Presentation header. The FROM and PAID headers contains the user’s DN or DDI and displays on the called device. Outgoing Calls A user who is configured with External Presentation Name and External Presentation Number initiates a call to a PSTN network through intercluster SIP trunks. If Enable External Presentation Name and Number check box is disabled in its SIP profile, then, Cisco Unified Communications Manager sends the original directory number information in the FROM and PAID headers and displays on the called device and configured External Presentation Information in the X-Cisco-Presentation header. Similarly, if Enable External Presentation Name and Number check box is enabled in its SIP profile, Cisco Unified Communications Manager sends the configured External Presentation Information in the FROM header and displays on the called device and original Directory Number in the PAID header. Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 793 Advanced Call Processing Intercluster SME Call Flows