Application/Usage:
Access Control
The Dual 4-Wire TO Access Module is intended to be deployed in the Total Access 1500 Chassis. The Dual 4-Wire TO provides for two individual 4-wire analog interfaces between a VF transmission facility and the Total Access 1500 Pulse Coded Modulation (PCM) backplane. Each TO interface provides 4-wire voice-grade (analog) data services with no signaling associated with the circuit, or where signaling is provided by in-band tones.