CCU-3 & CCU-30 Products Overview

Universal signalling converter, CCU-3, provides up to 3 fully telephone lines for 2 wire transmission between 4 wire facilities (usually multiplex channel modem 4 wire VF circuits + E&M).
CCU-3, is a compact and modular desk-top equipment. An optional rack mounting kit is avalaible for instalation into 19 inch standard rack.

Universal signalling converter, CCU-30, provides up to 30 telephone lines for 2 wire transmission between 4 wire facilities (usually multiplex channel modem 4 wire VF circuits + E&M).
CCU-30, is a compact and modular equipment 4RU's high, suitable for 19 inch rack installation.
All electrical connection, including power supply,
2 and 4 wires telephone interfaces and alarms extension, are located on the front of the shelf assembly.
The shelf holds up to ten (10) plug-in signalling converter modules MCR3. Each MCR3 signalling converter module implements three individual and independent programmable telephone interface circuits, including the hybrid network for 2W/4W conversion, according to the following operating modes:

CCU-3 and CCU-30 are powered by the AL38 plug-in power supply unit, that provides a high efficiency DC to DC function within the range from 21 to 56 VDC.
A plug-in RGU1 ring generator module, provides the alternate voltage for supply the 2 wire telephone line, when required by the programmed interface on the MCR3 card.
LED's indicators, on the front of each module, are provided for monitoring the operative status of the equipment. Two ports are also available, on the front of the equipment as dry relay contacts, for alarms extension.