/mcpEnable Route Class Signaling in the Cluster When you set the Route Class Trunk Signaling Enabled service parameter to True, the default route class signaling setting for all trunks or gateways in the cluster that support route class signaling is set to enabled. The settings for individual trunks and gateways override the clusterwide defaults. If you use this service parameter to enable route class signaling across the cluster, route class signaling can still be disabled on an individual trunk or gateway. Note Procedure Step 1 From Cisco Unified CM Administration, choose System > Service Parameters. Step 2 Set the Route Class Trunk Signaling Enabled service parameter to True. Step 3 Click Save. What to do next Use the following procedures to configure route class signaling on individual trunks or gateways. Enable Route Class Signaling on Trunks, on page 261 Enable Route Class Signaling on Gateways, on page 262 Enable Route Class Signaling on Trunks Use this procedure to enable route class signaling on an individual trunk. The configuration for individual trunks overrides the clusterwide service parameter setting. Before you begin Follow the Enable Route Class Signaling in the Cluster, on page 261 procedure to use a clusterwide service parameter to configure the default route class signaling settings for all trunks in the cluster. Procedure Step 1 From Cisco Unified CM Administration, choose Device > Trunks. Step 2 Click Find and select the SIP trunk on which you want to enable route class signaling. Step 3 From the Route Class Signaling Enabled drop-down list box, choose one of the following options: • Default—This trunk uses the setting from the Route Class Signaling Enabled service parameter. • Off—Route class signaling is disabled for this trunk. • On—Route class signaling is enabled for this trunk. Step 4 Click Save. Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 261 Placing Calls Enable Route Class Signaling in the Cluster