Description

The MH89760B is a complete T1 interface solution, meeting the Extended Super Frame (ESF), D3/D4 and SLC-96 formats. The MH89760B interfaces to the DS11.544 Mbit/sec digital trunk.

Features

• Complete interface to a bidirectional T1 link

• D3/D4 or ESF framing and SLC-96 compatible

• Two frame elastic buffer with 32µs jitter buffer

• Insertion and detection of A, B, C, D bits Signalling freeze, optional debounce

• Selectable B8ZS, jammed bit (ZCS) or no zero code suppression

• Yellow and blue alarm signal capabilities

• Bipolar violation count, FT error count, CRC error count

• Frame and superframe sync. signals, Tx and Rx

• Per channel, overall, and remote loop around

• 8 kHz synchronization output

• Digital phase detector between T1 line and STBUS

• ST-BUS compatible

• Pin compatible with the MH89760

• Inductorless clock recovery

• Loss of Signal (LOS) indication

• Available in standard, narrow and surface mount formats

Applications

• DS1/ESF digital trunk interfaces

• Computer to PBX interfaces (DMI and CPI)

• High speed computer to computer data links