Within the Unified CCE deployment, the agent desktop application is not statically associated with any specific agent or IP phone extension. Agents and phone extensions (device targets) are configured within the Unified CCE configuration and associated with a specific Unified CM cluster.
When logging in from an agent desktop application, the agent is presented with a dialog box that prompts for agent ID or login name, password, and the phone extension to be used for that session. At that time the agent ID, phone extension, and agent desktop IP address are dynamically associated. The association is released when the agent logs out.
This mechanism enables an agent to work (or hot-desk) at any workstation. It also enables agents to take their laptops to any Cisco Unified IP Phone and log in from that device (assuming the phone has been configured in Unified CCE and in Unified CM to be used in the Unified CCE deployment). Agents can also log in to other phones using the Cisco Extension Mobility feature. For more information about Extension Mobility, see the Extension Mobility section of the Cisco Unified Communications Manager Features and Services Guide.