GSM-WT204 GSM Gateway with 4 x Analogue / GSM Channels
	This unit combines 4 x GSM channels into a single box - the unit provides 4 x GSM channels for 4 calls. The unit connects to the Analogue Trunk Ports on a telephone system - the benefit is a single power supply and a single Hi-Gain GSM antenna (using the 4 way antenna combiner)