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The STU-160 DSL Network

terminating Unit is designed for

leased-line data networks for

terminal rates up to 128 kbps.

Features and Benefits

The unit is equipped with two independent terminal interfaces, which.

Eight STU-160 modems can connect to just one IUM interface unit

( resulting in up to 16 64-kbps channel connections) , so little investment

is needed to integrate and manage several modems and circuits in the

MartisDXX system.

Specifications Features:

Data rates: 1.2 kbps up to 128 kbps

Line code: 2B1Q, 2wire connection, full duplex

Line rate: 160 kbps ( 2B + D) , Symbol rate: 80 kbaud

Impedance: 135 Ohms.

Transmit level: + 13.5 dBm.

Installation:

The STU-160 provides two independent channels which can be freely

configured up to the maximum combined speed of 128 kbps.

DTE Interface Modules:

Two interface modules can be installed in one STU-160 modem.

Module Name Interface Connector

VMI 370 V.35 ISO 2110

25-pin D-connector

VHI 371 V.36 or X.21

( electrically)

ISO 2110

25-pin D-connector

VLI 372

25-pin D-connector
V.24/ V.28 ( ISO2110) ISO 2110

GMI 373 64 kbps G.703 codirectional

ISO 2110

25-pin D-connector

VMI 377 V.35 ISO 2593

34-pin rect.

Connector

XMI 378 X.21 ISO 4903

15-pin D-connector

EHI 392/ LAN Module 10Base2/ 10BaseT RJ-45/ BNC