Description

The MT8979 is a single chip CEPT digital trunk transceiver that meets the requirements of CCITT Recommendation G.704 for digital multiplex equipment.

The MT8979 is fabricated in Mitel’s low power ISO-CMOS technology.

Features

• Single chip primary rate 2048 kbit/s CEPT transceiver with CRC-4 option

• Meets CCITT Recommendation G.704

• Selectable HDB3 or AMI line code

• Tx and Rx frame and multiframe synchronization signals

• Two frame elastic buffer with 32 µsec jitter buffer

• Frame alignment and CRC error counters

• Insertion and detection of A, B, C, D signalling bits with optional debounce

• On-chip attenuation ROM with option for ADI codecs

• Per channel, overall and remote loop around

• ST-BUS compatible

Applications

• Primary rate ISDN network nodes

• Multiplexing equipment

• Private network: PBX to PBX links

• High speed computer to computer links