TDMA is the acronym for Time Division Multiple Access. One of two major protocols (the other is CDMA) for digital cellular telephony that enables multiple callers to share the same channel by giving each phone a specified time slot in which it may transmit or receive.
TDMA operates at 800 MHz or 1900 MHz; and when operating at the higher frequency, it enables Personal Communication Services (PCS) such as paging, text-based Internet access by means of the Wireless Applications Protocol (WAP), and voice mail. TDMA also enables data communications at a transfer rate of 14.4 Kbps. U.S. Service providers include AT&T Wireless and Nextel.