Fixed-Mobile Convergence (FMC) promises to let callers use a single device to communicate over any available wireless transport, public or private. In carrier-centric FMC architectures, Unlicensed Mobile Access (UMA) plays a pivotal role by letting dual-mode handsets roam between networks without disrupting active voice calls or data sessions.

But UMA-based services to date, like T-Mobile's Hotspot @Home, have largely been pitched to the residential market as an easy, inexpensive way to augment weak indoor cellular coverage.

This week, T-Mobile and Meru Networks announced a partnership to bring UMA into the enterprise. Specifically, business subscribers with T-Mobile dual-mode smartphones can now place calls over their employer's Meru WLAN, then continue on T-Mobile's GSM/GPRS network whenever they move outside Wi-Fi coverage.

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