The HICOM 150E is an Electronic, Digital, Stored Programme Controlled system. It employs Time Division Multiplexing to establish connections and A Law Pulse Code Modulation for local voice transmission.

The HICOM 150E provides both Analogue and Digital (ISDN 30, ISDN 2 and DASS 2) compatibility and an innovative user interface . Analogue connection is from the NTP to the MDF via strips connection 237A. ISDN connection is via a supplied lead which consists of an RJ45 (8 pin) plug. For DASS2, connection is made using two 75 ohm coaxial BNC connectors via the EDG box to the HICOM 150E.

The apparatus must be connected to the PSTN, host CRA and subsidiary CRA by connecting to the NTP via strips connection 237A.

The system may comprise of a single or double box configuration depending upon system requirements. The main cabinet and expansion cabinet are identical and can be set up on top of or beside each other. Both cabinets, each containing identical power supply modules are only suitable for floor standing and can not be wall mounted. only the main cabinet contains the central processor unit (CBIB) and REAL board providing power-fail and programmable relays. There are six universal slots in each cabinet for the insertion of analogue or digital trunk or extension cards.

The nominal input voltage of the power supply module is 230V A.C. with a maximum power consumption of 350 W.

All the digital featurephones are Optisets. In the event of power failure when using an analogue network connection "power fail" telephones are supported via the REAL module and additionally by power failure transfer modules situated on the Test Jack Frame.


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Last revised: March 19, 2023