With the Multi-Device Access (MDA) feature, a SIP user can register more than one SIP device with a single extension. For example, a user has 96X1 at his desk, 96X1 in his lab, and Avaya one-X® Communicator on his laptop and all the devices are registered with the same extension 123456. When a call arrives at extension 123456, all the devices are alerted. The user can answer the call from any one of the devices. If required, the user can bridge on to the call from one of the idle devices by using the Simulated Bridge Appearance (SBA) feature. Therefore, the call can be handed off between devices without parking the call. A user can register up to 10 SIP devices with the same extension.