The Fixed Mobile Convergence (FMC) application is used for wireless endpoints that support one-X Mobile Client.

FMC supports two modes called the following:

SMode (Single Mode): Provides functionality for phones operating in the public cellular network. The existing RTU for Extension to Cellular can continue to be used to support the one-X Mobile Client application.

DMode (Dual Mode): Provides functionality for dual mode wireless phones that operate in both the public cellular network and in a wireless SIP network.

An Extension to Cellular license provides an EC500 RTU or a Cellular Service Provider (CSP) RTU. A Single mode license provides an EC500 or CSP or SPFMC RTU or PBFMC RTU. A Dual Mode license provides an EC500 RTU CSP or SPFMC RTU or PBFMC RTU (single mode) and a private FMC (PVFMC) (dual mode) RTU.

Each dual-mode telephone requires two applications. The PBFMC application works similarly to Extension to Cellular and supports the cellular aspects of the dual-mode phone. The PVFMC application supports the SIP WiFi aspects of the dual mode phone. The two applications work together to support mobility features such as handover. If the dual mode endpoint is in both the WiFi and GSM range, WiFi gets priority and the call to the endpoint is routed through WiFi.

When you administer both public and private FMC applications for a station, calls to that station extend to public and private destinations as specified in administration for station mapping.