T-Mobile, Boingo join to help bridge wireless networks

"T-Mobile, Boingo join to help bridge wireless networks "T-Mobile and Boingo said they'll ensure that signals are smoothly handed off from T-Mobile's Wi-Fi (IEEE 802.11b) networks -- usually referred to as hot spots -- to its GPRS (General Packet Radio Service) cellular network, which carries data in conjunction with T-Mobile's GSM (Global System for Mobile Communications) voice network. Such handoffs aren't widely possible today."