Description

The Mitel MH88632B Central Office Interface Circuit provides a complete analog and signalling link between audio switching equipment and a subscriber line. The device is available in a single in line package for high packing densities or in a 90˚ package for reduced card clearance.

The device is fabricated using thick film hybrid technology for optimum circuit design and very high reliability.

Features

• Supports Loop Start and Ground Start protocols

• 2-4 Wire conversion

• Programmable Input Impedance, Network Balance Impedance and gains

• Three relay drivers

• Line state detection outputs

• 15mA operation allowing long line length capability

• On-hook reception for Caller Line Identification

• Meets FCC Part 68 Leakage Current Requirements

Applications

Interface to Central Office telephone line for

• PBX

• Key Telephone System

• Terminal Equipment

• Digital Loop Carrier

• Wireless Local Loop