★ A wireless technology for Motorola

★ It has the capabilities of digi-cellular phone, 2 way radio, alphanumeric pager and data modem / fax modem in a single network

★ Operational bands are 800 MHz, 900 MHz and 1.5 GHz

★ iDEN is based on TDMA(Time Division Multiple Access) and GSM architecture

★ For voice compression it uses Motorola's Vector Sum Excited Linear Predictors vocoder

★ For delivering 64 KBPS over a 25 KHz channel, it uses QAM modulation.

★ iDEN is designed to serve the mobile user for accessing information quickly without carrying several devices.