What is D-AMPS?
Digital Advanced Mobile Phone System
D-AMPS is designed to be compatible with the older analog AMPS technology, which is widely deployed in the U.S. TDMA is used as an enhancement to the AMPS network by the use of dual band AMPS / TDMA (or D-AMPS) phones. Use of these phones gives the widespread coverage of the AMPS networks along with some advantages of digital systems in areas where TDMA networks are available.

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