It’s uses time-division multiple access (TDMA) for channel sharing, and is capable of carrying both voice and digital data. It can be used in direct communication modes, or in a trunked system ...

North American TDMA (NA-TDMA) is a digital cellular system [22] [23] [24] sometimes called American digital cellular (ADC) or digital AMPS (DAMPS), or North American digital cellular (NADC) or IS-54 ...

For North American TDMA and CDMA phones, dual-band indicates that the phone will work in both the 800/850 MHz band and the 1900 MHz band. Most current TDMA phones in the U.S. are tri-mode ...

Features GAIT technology for full feature support on both GSM and TDMA networks. This feature-packed phone also sports voice dialing, voice memo, infrared, and an audio equalizer.

A TDMA based digital mobile network system. It was developed by Motorola, which remains the main manufacturer for iDEN devices. The main advantage of iDEN is the Push-To-Talk system, which enables ...

All GSM phones and most iDEN phones require a SIM card to operate. There are certain types of phones (CDMA, TDMA, AMPS) that do not use a SIM. Instead, the required data is programmed directly ...

QMesh also implements TDMA (Time Division Multiple Access) by splitting transmission into time slots, and only transmitting every third slot. This means it is operating on a 33% duty cycle ...

In an analog system, the signals applied to the transmission media are continuous functions of the message waveform. In the analog system, either the amplitude, the phase, or the frequency of a ...

Aims: Third-generation mobile phones, UMTS (Universal Mobile Telecommunication System), were recently introduced in Europe. The safety of these devices with regard to their interference with ...