wireless access communication system (AN) (WACS)

Wireless Access Communication System (WACS) is a standard for wireless connection of terminal equipment to the access network as implemented in Wireless Local Loop(WLL) and Radio Local Loop( RLL). WACS operates with transmitting equipment covering a range of approximately 300 m. Procedurally, Time Division Multiple Access( TDMA) is used for transmission and 32 kbit/s adaptive delta pulse code modulation( ADPCM) for voice transmissions. Quadrature phase shift keying( QPSK) is used for modulation.