Telstra Commander E105 Manual

Telstra Commander@ E1 05/208+
Installation and Maintenance Manual
DOC - E+ - IM 546/261
(ISSUE 1)
celstra

COPYRIGHT 1995 Telstra Technologies Pty Ltd
Telstra Technologies Pty Ltd, is a Standards Australia Quality Endorsed Company. This work is
copyright. All rights reserved. Other than for purposes and subject to conditions prescribed under the
Copyright Act, no part of it may in any form or by any means (electric, mechanical, microcopying,
photocopying, recording or otherwise) be reproduced, stored in a retrieval system or transmitted
without prior permission from Telstra Technologies Pty Ltd.
All enquiries should be addressed to:
Telstra Technologies Pty Ltd
A.C.N.006841 345
Locked Bag 10
HAWTHORN VIC 3 122
AUSTRALIA
0 Registered Trade Mark of Telstra Corporation Limited A.C.N. 05 1775 556

Table of Contents
I -
Chapter One - Introduction to the Commander E105/208+ System
Introduction
.............................................................................................................................. l-l
General Description
.................................................................................................................
I- 1
Keystations
.....................................................................................................................
1 - 1
Power and Termination Unit
............................................................................................ l-2
Power-fail
........................................................................................................................ l-3
Door Station ................................................................................................................... l-3
System Features
...................................................................................................................... l-5
Keystations
..................................................................................................................... l-5
Visual Indications
............................................................................................................ l-5
Programmable Facilities
...................................................................................................
1 - 5
SystemFacilities
...................................................................................................................... l-6
Incoming Calls
................................................................................................................ l-6
During a Call
................................................................................................................... l-6
outgoing Calls
................................................................................................................
1-7
Internal Calls
................................................................................................................... l-8
Equipment
....................................................................................................................... l-9
Miscellaneous
................................................................................................................. l-9
Chapter Two - Power and Termination Unit
Introduction
............................................................................................................................. 2-l
General Description
.................................................................................
.
...............................
2- 1
Power and Terminating Board
.........................................................................................
2-2
Optional Facilities Board (Optional)
................................................................................. 2-2
Circuit Blocks - Power and Terminating Board
.........................................................................
2-3
Transformer
...................................................................................................................
.2 - 3
Power Supply
.................................................................................................................
2-3
Electronic Choke
........................................................................................................... .2-3
Power-fail
....................................................................................................................... .2-3
Exchange Line Protection
............................................................................................... .2-3
System Bus
.....................................................................................................................
2-3
Circuit Blocks - Optional Facilities Board..
...............................................................................
2-5
Microcomputer Unit (MCU)
.......................................................................................... .2-5
Data Transmit and Receive
............................................................................................. .2-5
Door Station Interface
.....................................................................................................
2-5
External Music Source Interface
..................................................................................... .2-5
Commander E105/208+ Installation and Maintenance Manual
Table of Contents - i

Chapter Three - Keystations
Introduction .............................................................................................................................
3 - 1
General Description
.................................................................................................................
3 - 1
Keystation Main Board
...................................................................................................
3-2
Hold and Ring Detect Board
...........................................................................................
3-2
Keypad Assembly
...........................................................................................................
3 - 2
Circuit Blocks
..........................................................................................................................
3-3
Microcomputer Unit Circuit (MCU Circuit)
.................................................................... .3-3
Power Supply
.................................................................................................................
3-3
Isolation Transformer
.......................................................................................................
3 - 3
Data Transmit and Receive
.............................................................................................. 3-4
Speech Circuit
................................................................................................................ 3-4
Tone Generator
...............................................................................................................
3 -4
Audio Selector
................................................................................................................
3 -4
Audio Amplifier
...............................................................................................................
3 -4
Line Access Circuit ........................................................................................................ .3-4
HRDB-E Board (In Master Keystation)
..........................................................................
3-4
Chapter Four - Hardware Installation
Introduction .............................................................................................................................
4- 1
Component Safety Precautions
................................................................................................
4- 1
Installation Checklist
................................................................................................................ 4-2
Installation Procedures
............................................................................................................. 4-3
Sales Form Completion/Equipment Ordering
................................................................. .4-3
Locate and Mount Equipment ......................................................................................... .4-3
Optional Facilities Board Installation (OFB-E)
...............................................................
4- 11
Connect and Terminate Cables .....................................................................................
.4- 12
Power-Fail Telephone
..................................................................................................
.4- 17
Protective Earth
...........................................................................................................
.4- 17
General Procedure
.................................................................................................................
4- 18
Power Up.................................................................................................................... .4-18
Check Cabling
.............................................................................................................
.4- 18
Power Down ...............................................................................................................
.4- 18
Plug in Keystations
.......................................................................................................
.4- 18
Keystation Self Test
.....................................................................................................
.4- 18
Test Mode Entry
..........................................................................................................
.4- 18
LEDTests.. .................................................................................................................. .4-19
Programming..
.............................................................................................................. .4-20
Defective Equipment
.................................................................................................... .4-20
Tab/e of Contents - ii

__
Chapter Five - System Programming
Introduction
............................................................................................................................. 5-l
General Description
................................................................................................................. 5-l
Programming Hardware Locations
........................................................................................... 5-l
DIP Switches
.................................................................................................................. 5-l
General Programming Procedure
..............................................................................................
5-3
Keystation Intercom Address
......................................................................................... .5-3
Master Page-In ............................................................................................................... 5-4
Keystation Access Class
................................................................................................. 5-4
Ring Line 1
..................................................................................................................... 5-6
RingLine
..................................................................................................................... 5-6
DialType
....................................................................................................................... .5-7
Auto Pause Insert
........................................................................................................... .5-7
Music-On-Hold
............................................................................................................. .5-8
Background Music
......................................................................................................... .5-9
InitialiseandReset
................................................................................................................. 5-10
Access Class Restriction
............................................................................................... 5-10
Exchange Line Auto Answer
.........................................................................................
5-11
Headset Mode
............................................................................................................. .5- 12
Programming summary
..........................................................................................................
5-13
Software Programming Records
....................................................................................
5-13
Chapter Six - Functional Tests and Maintenance
Introduction
............................................................................................................................. 6-l
General Description
................................................................................................................. 6-l
System Tests and Repair Actions
............................................................................................. 6-2
Key station Installation
..................................................................................................... 6-2
* Exchange Line Seizure
..................................................................................................
6-3
* Incoming Exchange Call
...............................................................................................
6-3
Off-Hook Signalling
........................................................................................................ 6-3
Volume Control
...............................................................................................................
6-3
Answering Exchange Call
................................................................................................
6-3
Automatic Answering Exchange Call
................................................................................ 6-4
* Outgoing Exchange Call
............................................................................................... 6-4
Decadic to Tone Signalling
............................................................................................... 6-4
Hold
............................................................................................................................... 6-4
Music-On-Hold
.............................................................................................................. 6-4
Hold Automatic Ring Back
.............................................................................................. 6-4
* Last Number Redial
.................................................................................................... .6-4
Abbreviated and Speed Dialling
.......................................................................................
6-5
Commander E105/208+ Installation and Maintenance Manual
Table of Contents - ii/

System Memory Back-Up
..............................................................................................
6-S
* PABX Recall
...............................................................................................................
6-5
* Paging ..........................................................................................................................
6-5
Do Not Disturb
...............................................................................................................
6-5
Intercom Signal or Voice Call
..........................................................................................
6-S
Intercom Answering
........................................................................................................
6-5
On-Hook Dialling
............................................................................................................
6-5
* Exchange Line Conference
........................................................................................... 6-6
* Background Music
....................................................................................................... 6-6
* Door Station
................................................................................................................ 6-6
* Power-fail Telephone
................................................................................................... 6-6
Centel Features
.............................................................................................................. .6-6
Maintenance ............................................................................................................................
6-7
Test Equipment
...............................................................................................................
6-7
Voltage Test Points
.......................................................................................................... 6-7
General ........................................................................................................................... 6-8
Fault Finding Tables
.................................................................................................................
6-8
Repair Procedures
.................................................................................................................
6- 15
Printed Board Assemblies (PBA’s)
...............................................................................
.6- 15
Appendix A - System Characteristics
System Capacities and Limits
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A- 1
System Specifications
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-2
Electrical . . , . . . . . . . . . . . . , . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-2
Environmental
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-2
External Music- On-Hold
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A-2
Dialling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
A-2
Dimensions and Weight
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
Appendix B - Parts Serial Item and Code list
Central Equipment
...................................................................................................................
B- 1
Keystations .............................................................................................................................
B- 1
Miscellaneous Items
................................................................................................................. B-l
Maintenance Parts
...................................................................................................................
B-2
Documents
..............................................................................................................................
B-2
Appendix C - System User Guide
Table of Contents - iv

Table of Illustrations
IL0 1 - System Block Diagram
.................................................................................................. l-4
IL02 - PTU
.............................................................................................................................. 2-l
IL03 - PTB-E Circuit Block Diagram
........................................................................................ 2-4
IL04 - OFB-E Circuit Block Diagram
....................................................................................... 2-6
IL05 - E 105+ and E208+ Keystation
............
.
..........................................................................
3-2
IL06 - Keystation Circuit Block Diagram
..................................................................................
3-5
IL07 - System Order Form.. ..................................................................................................... 4-4
IL08 - Limitations To Wall Mounting
.........................................................................................
4-5
IL09 - Plug-Pack Dimensions
................................................................................................... 4-6
IL 10 - Power And Termination Unit Dimensions
........................................................................ 4-7
IL 11 - Power and Termination Unit Mounting
............................................................................ 4-7
IL1 2 - Sale/Rental Identifying Window
.....................................................................................
.4-8
IL 13 - Installing The Handset Rest
............................................................................................ 4-9
IL 14 - Keystation Wall Mounting Dimensions
.......................................................................... 4-10
IL 15 - Wall Mounting the Keystation
...................................................................................... 4-10
IL 16 - Wall Mounting Dimensions For Door Stations
..............................................................
4- 1 1
IL
IL
IL
7 - Commander E 105/208+ Cabling Scheme
................................................................... .4-
12
8 - Bus Length
.................................................................................................................. 4-13
9 - Example Of Allowable Keystation Distances
..............................................................
.: 4- 13
IL20 - Example Of Unacceptable Cabling Scheme
..................................................................
4- 14
IL2 1 - Power and Termination Unit Terminations
..................................................................... 4-14
IL22 - Modular Socket (KRONE Type)
................................................................................. 4-16
IL23 - Keystation DIP Switches (In Default Settings)
................................................................
5-2
IL24 - No Master Page-In ....................................................................................................... 5-4
IL25 - Program - Local Calls Only
........................................................................................... 5-6
Commander E105/208t Installation and Maintenance Manual
Table of Illustrations - i

IL26 - Program - Ring On Line 1
.............................................................................................. 5-6
IL27 - Program - No Ring On Line 2 ........................................................................................ 5-6
IL28 - Program - DTMF Dialling
..............................................................................................
5-7
IL29 - Program - Auto Pause Insert.. ........................................................................................ 5-7
IL30 - Music-On-Hold Links
................................................................................................... 5-8
IL3 1 - Program - Internal, External, and No Music-On-Hold
.................................................... 5-9
IL32 - External Music-On-Hold Setting on OFB
.......................................................................
5 -9
IL33 - Internal or No Music-On-Hold Setting on OFB
............................................................. 5-9
Table of Illustrations - ii

Table of Tables
-
Table 1 - Bus Cabling
............................................................................................................. 4-l
Table 2 - Keystation Bus Cabling Terminations
.....................................................................
.4 -15
Table 3 - Door Station Terminations
.4
-
.....................................................................................
16
Table 4 - Keystation Voltages
...............................................................................................
4- 18
Table 5 - Self Test Key Sequence and LED Responses
........................................................
4- 19
Table 6 - DIP Switch 2 Keystation Options..
...........................................................................
5-2
Table 7 - Keystation Address Settings..
-
...................................................................................
5 3
Table 8 - Example of Exception Table
5-
.....................................................................................
5
Table 9 - Music Source Links
................................................................................................. 5-8
Table 10 - Cable Connections
................................................................................................. 6-2
Table 1 1 - Power Supply Test Points
....................................................................................... 6-7
Table 12 - Power and Termination Unit Test Points
.................................................................. 6-7
-
Table 13 - KeystationTest Points
............................................................................................. 6-7
Commander E105/208+ Installation and Maintenance Manual
Table of Tables - i

Preface
--
The preface explains the structure of the Commander@ E 105/208+
Installation and Maintenance Manual. It describes both the overall
layout and the layout of each chapter. It also defines and illustrates the
conventions used throughout the manual
Purpose of the Manual
The purpose of the Commander E 105/208+ Manual is to provide you,
as Telstra Technical Staff, with a complete set of clear and concise
installation and maintenance procedures. It should be used when
installing a Commander E 105+ or E208+ system to ensure the process
is completed correctly, safely and easily. It should also be used for
maintaining the system when problems arise.
Audience
This manual is written solely for Telstra Technical Staff responsible for
the installation and maintenance of the Commander E105/208+ system.
Organisation of the Manual
-
The Commander E105/208+ Installation and Maintenance Manual is
divided into nine sections, six chapters and three appendices.
Chapter One Introduction
This chapter introduces the Commander E105/208+ system and
to the Commander E105/
explains the difference between the E105+ and E208+ models. It also
208+ System
provides two descriptive lists: System Features and System Facilities.
Chapter Two Power and
Termination Unit
This chapter introduces the Commander E 105/208+ Power and
Termination Unit. It begins with a general description; a more detailled
explanation follows.
Chapter Three
Keystations
This chapter introduces and describes the Commander E 105/208+
keystations. It begins with a general description of the two types of
keystations; a more detailled explanation follows.
Chapter Four Hardware
Installation
This chapter describes the procedures for installing the Commander
E105/208+ system hardware. It begins with an Installation Checklist.
Each point in the checklist is thenexplained in detail.
Chapter Five System
Programming
This chapter contains all the procedures for programming the
Commander E 105/208+ system. It begins with a general programming
procedure and then explains how to program individual features.
Commander E105/208t Installation and Maintenance Manual
Preface -i

Chapter Six Functional
Tests and Maintenance
This chapter explains the tests required to verify that the Commander
E105/208+ system has been installed and programmed correctly. It
also explains how to maintain the system after a fault has occurred
during testing or normal daily operation.
Appendix A System
This Appendix provides a list of all Commander E 105/208+ system
Characteristics
limits and specifications.
Appendix B Parts Serial
Item and Code list
This Appendix contains a list of every Serial Item number. A code
description and remarks are provided for each item.
Appendix C System User
Guide
This Appendix contains a copy of the Commander E 105/208+ System
User Guide.
Preface - ii

Manual Conventions
The symbols and typographic conventions used throughout this manual
are as follows.
.
Bullets iternise information and procedures.
Bold type indicates chapter, section and sub-section headings-
for example, ‘Manual Conventions’.
Bold type also indicates illustration names-
for example, ‘System Block Diagram’.
Illustration numbers appear below the illustration name-
for example,
System Block Diagram
[IL011
Capital letters within these square brackets [ ] identify keys-
for example, ‘When the [REDIAL] key is pressed.. .’ .
Italics emphasise important words within the text-
for example, ‘DO not over-tighten the screws.’
Commgnder E105/208t Installation and Maintenance Manual
Preface - iii

L
Chapter One
Introduction to the
Commander El 05/208+ System

Chapter One
Introduction to the Commander El05/208+ System
Table of Contents
Introduction ......................................
.
........................
.
................
.
..................... l-l
General Description ............
.
......
.
................
.
.................................
.
.....................
1-l
Keystations
.....................................................................................................................
1 - 1
Program and Data Storage
.....................................................................................
1 - 1
System Communications
........................................................................................ l-2
DIP Switches
......................................................................................................... l-2
System Master Keystation
..................................................................................... l-2
Power and Termination Unit
............................................................................................ l-2
Dial Pad Programming
........................................................................................... l-2
Power and Terminating Board (PTB-E)
.................................................................. l-3
Optional Facilities Board (OFB-E)
......................................................................... l-3
Power Supply
........................................................................................................ l-3
Power-fail
........................................................................................................................ l-3
Door Station
................................................................................................................... l-3
System Features .....................
..~.................................,................, ..................... 1-5
Keystations
.....................................................................................................................
1 - 5
Visual Indications
............................................................................................................ l-5
Programmable Facilities
...................................................................................................
1 - 5
System Facilities...............
.
.......
.
........
.
........................
.
................
.
..................... 1-6
Incoming Calls
................................................................................................................ l-6
Audible Signalling..
................................................................................................. l-6
Do Not Disturb..
.................................................................................................... l-6
Exchange Call Automatic Answer
........................................................................... l-6
Exchange Call Queuing
..........................................................................................
1 - 6
Flexible Ring Assignment
........................................................................................ l-6
DuringaCall ................................................................................................................... l-6
Call Transfer
.......................................................................................................... l-6
Conference
............................................................................................................ l-6
Hold - Common
.................................................................................................... l-6
Hold - Recall
......................................................................................................... l-6
Music-On-Hold
..................................................................................................... l-7
Off-Hook Signalling
............................................................................................... l-7
PABX Recall
......................................................................................................... l-7
Chapter One

outgoing calls
................................................................................................................ l-7
Access Barring
...................................................................................................... l-7
Automatic Pause Insertion on PABX Lines
............................................................. l-7
Decadic to Tone Signalling
..................................................................................... l-7
Direct Exchange Line Access
................................................................................. l-7
Last Number Redial
............................................................................................... l-7
Live Key Working
................................................................................................. l-7
On-Hook Dialling/Monitor
..................................................................................... l-7
Station Abbreviated Dialling
................................................................................... l-8
StationSpeedDialling
............................................................................................
1-8
Internal Calls
...................................................................................................................
1-8
Alternative Point Answering
...................................................................................
1 - 8
Direct Keystation Selection
.................................................................................... l-8
Intercom
................................................................................................................ l-8
Intercom Voice/Ring Signahing
................................................................................
1 - 8
Meet-Me Paging
.................................................................................................... l-8
paging
................................................................................................................... l-8
Voice Call
.............................................................................................................. l-8
Equipment
....................................................................................................................... l-9
Door Station
.......................................................................................................... l-9
Portability .............................................................................................................. l-9
Powerfail Operation
............................................................................................... l-9
Power Failure Memory Retention
........................................................................... l-9
Keystation Directory
.............................................................................................. l-9
Wall-Mounting Bracket
.......................................................................................... l-9
Miscellaneous
................................................................................................................. l-9
Background Music (Optional)
................................................................................ l-9
Call Progress Tones
............................................................................................... l-9
Confidence Tone
.................................................................................................... l-9
Headset Mode
..................................................................................................... l-10
Secrecy
............................................................................................................... l-10
Visual Indication
................................................................................................... l-10
Commander E105/208t Installation and Maintenance Manual Chapter
One

Chapter One
Introduction to the Commander El 05/208+ System
-.
Introduction
This chapter provides a general description of the Commander El051
208+ system, including an explanation of its features and facilities.
General Description
Kevstations
Program and Data
Storage
The Commander E 105/208+ is an enhancement of the Commander
E105/208 system. It provides the essential features and facilities
expected in a Commander Key System, and at the same time offers
relatively simple installation and maintenance requirements.
The Commander E 105/208+ System features a distributed-intelligence
architecture based on a six-wire bus configuration.
This architecture eliminates the need for bulky main equipment: the
keystations themselves perform the system control functions. The use of
a high-performance CMOS single-chip microcomputer in each
keystation achieves this function.
A fully equipped system comprises eight keystations and one Door
Station, with a maximum bus length of 500 metres (0.5 mm diameter
cable).
Refer to Illustration 1 - System Block Diagram.
A single-chip microcomputer in each keystation controls all operational
facilities of the Commander E105/208+ system.
An in-built speaker provides keystation tones.
A RISC microcomputer controls all keypad functions.
The station microcomputer’s program and data are stored in 8K words
of ROM and 2K bits of RAM. They control all keystation and data
communication functions. During a power failure, a supercapacitor
back-up protects abbreviated dialling numbers (stored in RAM). This
back-up also allows keystations to be unplugged and moved at will from
point to point.
Commander E105/20& Installation and Maintenance Manual Page
1-l

Introduction to the Commander E105/20& System General
Description
System Communications
A carrier-sense, multiple-access communications protocol with
frequency-shift keying transmission achieves signalling between
keystations on the system bus.
DIP Switches
Several keystation facilities are individually programmable via“DIP”
switches located in the base of the keystation’s housing.
These include:
.
keystation address
.
master page inclusion
.
STD/IDD access
.
exchange line ring assignment
.
pulse or tone dialling
.
auto pause insertion.
System Master Keystation
Every system installation must include a System Master Keystation. It
contains the Hold and Ring Detect Board (HRDB-E), which provides
all the electronics necessary for:
.
exchange line ring detection
.
line holding
.
internal music on hold.
From a user’s viewpoint, the operation of a system master keystation is
identical to that of a standard keystation.
Power and Termination
Unit
The other major component of the Commander E105/208+ system is
the Power and Termination Unit (PTU). This compact unit houses the
Power and Terminating Board (PTB-E) and Optional Facilities Board
(OFB-E).
The PTU and OFB-E for the Commander E 105/208+ are the same as
that used on Commander E 105/208.
Dial Pad Programming
Several keystation facilities are individually programmed via the station
dial pad. These programming steps are password protected.
Page l-2

General DescriDtion
introduction to the Commander E105/208+ System
Power and Terminating
Board (PTB-E)
Optional Facilities Board
(OFB-E)
Power Supply
Commander E105/208t Installation and Maintenance Manual
Page 1-3
Powerfail
Door Station
The PTB-E provides output terminals for the bus and input terminals for:
.
a maximum of two exchange or PABX lines
.
plug-pack power supply
.
telecommunications reference conductor (if required)
.
power-fail telephone
.
external music source.
This board also supplies system power supply regulation and the system
power-fail relay, as well as exchange line electrical protection.
An OFB-E is installed in the PTU to provide any or all of the following
facilities:
.
Door Station
.
external music on hold
.
background music
Equipped with the same high performance microcomputer as the
keystdtions, the OFB-E contains the required intelligence for bus
communications and control functions for the optional features.
The OFB-E is connected to the PTB-E via a flat cable.
Input power is supplied to the PTB-E via a double-insulated, mains-
operated, in-line plug-pack.
During a power failure, exchange line calls can still be made and
received at a specially provided two-wire telephone that is automatically
switched across the first incoming exchange pair.
The Door Station is a compact unit incorporating a speaker and
microphone. A Door Station provides two-way communications
between any unsupervised area and a keystation.

Introduction
to
the
Commander
E105/208+
System General
Descriotion
-
System Block Diagram
[IL011
Page
l-4

Svstem Features
introduction to the Commander E105/208t System
System Features
Keystations
Four types of stations are associated with the Commander E 105/208+
system:
.
E105+ Master Keystation
Contains the hold and ring detection circuitry.for the E105-t
System.
.
E208+ Master Keystation
Contcrins the hold and ring detection circuitry for the E208+
system.
.
E208+ Standard Keystation
.
Door Station
For use on both E105+ and E208+ systems.
NOTE:
Both Commander E 105+ and Commander E208+ Master
Keystations have keys provided for 2 exchange lines. The
E
105+ Master Keystation however differs from the E208+
in that the inbuilt HRDB-E (Hold and Ring Detect Board) is
only equipped to handle 1 exchange line.
Standard Keystations are identical for both size systems.
Visual Indications
Visual indicators on each keystation show the status of:
.
Exchange lines
idle
incoming ring
hU.SY
hold
conference
.
Intercom circuit
free busy
incoming cull
.
Do Not Disturb
.
Speaker On.
Programmable Facilities
Several options and facilities can be programmed at each keystation via
“DIP” switch settings. The DIP switches are located under the base of
the keystation.A small protective cover must be removed to access the
DIP switches. Further options are programmed via the keystation dial
pad. These options are password protected.
Commander E105/208t lnstailation and Maintenance Manuai
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