Cisco Extension Mobility is a feature that allows users to use different IP Phones as their own by simple logging in process. This is possible by applying different device profile configurations when a user logs in.
STEP 1: VERIFY EXTENSION MOBILITY SERVICE IS RUNNING:
Note: There can be a scenario where multiple call managers are being used to register phones, however, the Cisco Extension Mobility Service is not active on all servers. Watch out for this.
From the Navigation menu select Cisco Unified Call Manager ServiceabilitySelect Tools > Control Center – Feature Services
Make sure that the Cisco Extension Mobility service shows status Activated
STEP 2: CONFIGURE EXTENSION MOBILITY SERVICE:
From the Navigation menu select Cisco Unified CallManager AdministrationSelect Device > Device Settings > Phone Services
Click Add New
In the Service Name field, type Extension Mobility
In the Service Description field, type Login and logout service
In the Service URL field, Enter the following URL: