Extension Mobility Configuration Step-by-Step 1. From Communications Manager Administration page, go to Navigation > Cisco Unified Serviceability page . From the menu, select Tools > Service Activation . 2. Select the CUCM IP server. 3. Verify that the Cisco Extension Mobility service is activated. If it is not, activate it. 4. From Communications Manager Serviceability page, go to Navigation > Cisco Unified Communications Manager Administration page. From the menu, select System > Service Parameters 5. Select CUCM IP server. 6. Select Cisco Extension Mobility (Active) for service. 7. On the Service Parameter Configuration page, modify the following parameters: - Intra-Cluster Maximum Login Time: :10 - Intra-Cluster Multiple Login Behavior: Auto Logout - Remember the Last User Logged In: True 8. Click Save . 9. On Cisco Unified Communications Manager Administration page , from the m