The Total Access 1500 FXS/GT Access Module is intended to be deployed in the Total Access 1500 Chassis. The FXS/GT provides for a 2-wire analog interface between a Voice Frequency (VF) transmission and signaling facility and the Total Access 1500 Pulse Code Modulation (PCM) backplane. The FXS interface provides for simultaneous four-state signaling in each direction for use with 2-wire off-premises station lines, carrier extended PBX trunks, or subscriber line foreign exchanges using ground or loop start signaling system.
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