Karel MS128 - II.1. Consoles, Feature Phones, Direct Station Select Modules - Op48(-H), Lt48(-H), Dss80, Dss40; II.1.A. Op48(-H) Console

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Karel MS128 Installation & Maintenance Guide

Edition 3.2

II.1. CONSOLES, FEATURE PHONES, DIRECT STATION

SELECT MODULES - OP48(-H), LT48(-H), DSS80,

DSS40

OP48(-H) Consoles, LT48(-H) Feature Phones, DSS80 / DSS40 Direct Station

Select Modules are the members of the same telephone family, hence they have

similar cases.

The data cabling of these sets is made via the 6-pin RJ socket on the MS128

CPUKON card. The signaling between the system and consoles, feature phones or

DSS modules is illustrated in the following table :

MS128 CPUKON Card Telephone / DSS Card

Console Connector Pin No Signal RJ Socket Pin No

1 +12 VDC 6

2 Busy -

3 - -

4 - -

5 GND 2

6 Data 1

The input of +12 VDC is regulated to +5 VDC by telephone / DSS cards.

II.1.A. OP48(-H) CONSOLE

There are two types of OP48 Consoles, OP48 Console and OP48-H Handsfree

Console, the second one being half-duplex. The OP48(-H) Console has a BDP

(Busy Display Panel) that shows the states of the first 40 extensions and the first

12 lines as well as some system features. There is also an 8-Character Display that

keeps the user informed about the calling / called extensions and dialed numbers

as well as some system features.

The outlook and BDP of OP48-H Console are illustrated in the following figures.