Description

The MT8971B (DSIC) and MT8972B (DNIC) are multi-function devices capable of providing high speed, full duplex digital transmission up to 160 kbit/s over a twisted wire pair. They use adaptive echo-cancelling techniques and transfer data in (2B+D) format compatible to the ISDN basic rate.

Features

• Full duplex transmission over a single twisted pair

• Selectable 80 or 160 kbit/s line rate

• Adaptive echo cancellation

• Up to 3km (8971B) and 4 km (8972B)

• ISDN compatible (2B+D) data format

• Transparent modem capability

• Frame synchronization and clock extraction

• MITEL ST-BUS compatible

• Low power (typically 50 mW), single 5V supply

Applications

• Digital subscriber lines

• High speed data transmission over twisted wires

• Digital PABX line cards and telephone sets

• 80 or 160 kbit/s single chip modem