D-AMPS is more typically referred to as IS-54A, B, or C and, of course, IS-136.
Posted by waqqas1
1. It is developed for use in the United States.
2. D-AMPS is more typically referred to as IS-54A, B, or C and, of course, IS-136.
Posted by alaxander
IS-54 and IS-136 are second-generation (2G) mobile phone systems, known as Digital AMPS (D-AMPS). It is used throughout the Americas, particularly in the United States and Canada. D-AMPS is considered end-of-life, and existing networks are in the process of being replaced by GSM/GPRS and CDMA2000 technologies.
Although this system is most often referred to as TDMA, this name is based on the acronym for time division multiple access, a common multiple access technique which is used by multiple protocols, including GSM, as well as in IS-54 and IS-136. However, D-AMPS has been competing against GSM and systems based on code division multiple access (CDMA) for adoption by the network carriers, although it is now being phased out in favor of GSM/GPRS and CDMA2000 technology.
D-AMPS uses existing AMPS channels and allows for smooth transition between digital and analog systems in the same area.
Posted by sagitraz