Vertical Edge 120 Specifications download pdf (Page 27)

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DX-120 Installation and Maintenance Manual OVERVIEW

APM4 - Analog Port Module (continued)

• All connections are via RJ-11 connectors along the bottom edge of the module. KSU1 is delivered with one

APM4 installed on ribbon connector J5 as standard equipment.

• APM4’s may be installed on 408M/E-J5 (standard in KSU1:408M-J5 or KSU2 via dedicated cable).

IMPORTANT

DO NOT ATTEMPT to install an APM4 on J2 or J3.

DPM8 (Digital Port Module - 8 Circuits)

The DPM8 module expands the DX-120 system capacity of digital ports DET (Digital Executive Telephones) and

DSS consoles. Each digital port is comprised of a proprietary octal ASIC transceiver. There are three data

channels in operation at each digital port via the octal transceiver. One channel is used for call processing control

of digital terminal functions/operations and two channels are used for the digital voice channel requirements. The

DPM8 is controlled directly from the 408M/E; therefore, there is no heartbeat LED located on the DPM8.

DPM8 (Digital Port Module - 8 Port)

• Each digital station interface is protected against circuit wiring shorts by an over-current protection Polyswitch.

The digital station circuit requires only one cable pair to operate and is not polarity sensitive.

• Physical connection of digital port terminals (DET and DSS) to the DPM8 module is made through convenient

RJ-11 connectors along the bottom edge of the module.

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Vertical Edge 120 Specifications Page 27