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Steps to configure a multicluster
Cisco Unified Communications Manager
IM and Presence environments for
BlackBerry Connect
and
BlackBerry Presence
services

When you configure a multicluster

Cisco Unified Communications Manager

IM and Presence environment for

BlackBerry Connect

and

BlackBerry Presence

services, you perform the following actions:

Step	Action
	Make sure your multi-cluster environment has the following configured: DNS SRV records for Cisco Jabber Service Discovery. For instructions, see " Service Discovery" in the Cisco Jabber Planning Guide for your version of Cisco Jabber . Cisco Intercluster Lookup Service (ILS) between the CUCM clusters in your environment. For instructions, see "Intercluster Lookup Service" in the Cisco Unified Communications Manager Features and Services Guide for your version of Cisco Unified Communications Manager . Intercluster Peering between the CIMP clusters in your environment. For instructions, see " Intercluster Peer Configuration" in the Cisco Unified Communications Manager Configuration and Administration Guide for your version of the Cisco Unified Communications Manager .
	Create the following users and passwords on each CUCM Publisher in each CUCM cluster in a multi-cluster environment. These must be the same, including case sensitivity on each server. BEMS uses these users and password to authenticate to the CUCM server for user Presence information. For BlackBerry Connect AXL application user username and password. The AXL application user must be a user that is in a group that is assigned the Standard AXL API Access role. For more information, see your Cisco documentation. For BlackBerry Presence Application user and password. For instructions, see "Create an Application User" in the Installation content. UDS Username (Dummy user). For instructions, see "Create a Dummy User" in the Installation content.
	Download the required certificates from each cluster. Tomcat.der Cup.der Cup-xmpp.pem and Cup-xmpp-ECDSA.pem Cup-ECDSA.der and Tomcat-ECDSA.der CUCM SSL certificate. Visit the Cisco Devnet to see Download the Cisco Unified CM SSL Certificate
	Import the certificates into the Java keystore. For instructions, see "Import the CA certificate into the Java certificate store" in the BEMS-Core configuration content.
	Configure the BlackBerry Connect service.
	Configure the BlackBerry Presence service.

Configuring the BEMS-Presence and BEMS-Connect services in a multi-cluster Cisco Unified Communications Manager for IM and Presence environment