Karel MS38s Operating and safety instructions

Karel MS38s
Telephone System
Installation
&
Maintenance
Guide
Edition 3.1

i
CONTENTS
SECTION PAGE
INTRODUCTION 1
TECHNICAL REFERENCE
I. SYSTEM 3
I.1. MB38s MOTHERBOARD 4
I.2. POWER TO THE SYSTEM 5
I.2.A. PS38 POWER ADAPTOR 5
I.2.B. POWER FAILURE TRANSFER STATIONS 6
I.3. EXTERNAL MUSIC CONNECTOR 6
I.4. EXTERNAL RELAY 6
II. ACCESSORIES 7
II.1. CONSOLES, FEATURE PHONES – OP48(-H), LT48(-H) 8
II.1.A. OP48(-H) CONSOLE 8
II.1.B. LT48(-H) FEATURE PHONE 10
II.2. MINI PRINTER - KY16 10
II.3. SERIAL INTERFACE - CM38s, PK38s, CM38s+PK38s, SERIAL
PRINTER INTERFACE
12
II.3.A. CM38s CALL RECORD LISTING INTERFACE AND/OR
PK38s PC-CONSOLE INTERFACE 12
II.3.B. SERIAL PRINTER INTERFACE 15
II.4. DOORPHONE – DY01 16
II.5. EXTERNAL ANNOUNCEMENT SYSTEM 16
II.6. BATTERY BACKUP UNIT -BBU38s 16
II.7. AUTO ATTENDANT & VOICE MAIL - EVM38 18
II.8. LOCAL PAGER – PG100 19
II.9. STANDARD TELEPHONE SETS 21
II.10. FILTER & PROTECTION UNIT – FPBASE, FPEXP 22
III. SOFTWARE 25
IV. TECHNICAL SPECIFICATIONS 27

ii
SECTION PAGE
INSTALLATION
I. PRELIMINARY NOTICE 29
I.1. DELIVERY CHECK 29
I.2. INSPECTION 29
I.3. ENVIRONMENTAL REQUIREMENTS 29
II. SYSTEM INSTALLATION 31
II.1. PS38 POWER ADAPTOR 33
II.2. MB38s MOTHERBOARD 34
III. ACCESSORY INSTALLATION 37
III.1. CONSOLES, FEATURE PHONES 37
III.2. MINI PRINTER 41
III.3. SERIAL INTERFACE 44
III.3.A. PC INTERFACE 44
III.3.B. SERIAL PRINTER INTERFACE 45
III.4. DOORPHONE 46
III.5. EXTERNAL ANNOUNCEMENT SYSTEM 49
III.6. BATTERY BACKUP UNIT 50
III.7. AUTO ATTENDANT & VOICE MAIL 52
III.8. LOCAL PAGER 54
III.9. STANDARD TELEPHONE SETS, EXTERNAL LINES 57
III.10. FILTER & PROTECTION UNIT 57
III.11. EXTERNAL MUSIC SOURCE 59
III.12. EXTERNAL RELAY 59
MAINTENANCE
I. MAINTAINING THE SYSTEM 61

INTRODUCTION
This Installation and Maintenance Guide provides an overall technical
reference on the KAREL MS38s system and its accessories and
includes descriptions, structures and capabilities as well as the
installation and maintenance information.
This guide is formed up of three main chapters:
1) Technical Reference: The system outline is given and all the
accessories are described. Brief information about the software
structure of the system is presented and finally the technical
specifications of the system are listed.
2) Installation Guide: The basic system installation and wiring
instructions are presented. Following the system installation part,
the installation and wiring of the accessories are explained.
3) Maintenance Guide: The basic steps to solve the problems faced
after the installation of the system are given.

Karel MS38s Installation & Maintenance Guide
Edition 3.13
I. SYSTEM
MS38s system has a capacity of 4 lines and 8 extensions.
The system consists of the following parts :
• CBN38s Cabinet made of plastic,
• MB38s Motherboard,
• PS38 Power Adaptor, including a plastic cabinet (called PS38CB) and a
power card (called PS38CR).
See the following figures to have a general idea about the outlook as well as the
structure of the system.
Figure A-1
Figure A-2

Karel MS38s Installation & Maintenance Guide
Edition 3.1
4
I.1. MB38s MOTHERBOARD
The MB38s motherboard consists of the microprocessor, utility, DTMF, switching,
line and extension circuitries. See the following figures for the location of these
circuitries and the operational flow diagram of MB38s motherboard.
Figure A-3
Figure A-4

Karel MS38s Installation & Maintenance Guide
Edition 3.15
The MS38s motherboard has 4 lines and 8 extensions. By default, the extensions
have numbers 11 to 18 whereas the lines have numbers 01 to 04.
The dimensions of MB38s are 21 cm x 23 cm and the weight is 0.35 kg.
I.2. POWER TO THE SYSTEM
MS38s system can operate for the mains input of 180 - 260 VAC 50/60 Hz, which is
processed by the PS38 Power Adaptor.
Inside the fuse slot on the PS38CR card of the PS38 Power Adaptor, there exists a
T-Type fuse of 0.63A / 250 VAC for the first step protection.
I.2.A. PS38 POWER ADAPTOR
The outlook of PS38 Power Adaptor is illustrated in the following figure .
Figure A-5
PS38 Power Adaptor has the PS38CR Power Card surrounded by the PS38CB
Cabinet, which is made of plastic.
PS38 Power Adaptor is a Switched Mode Power Supply (SMPS) operating at mains
voltage. Receiving 220 VAC over the mains, PS38CR generates –24 VDC and 8
VDC for the system and accessories as well as 64 Vrms ring signal. The output of
8 VDC is also regulated to 5 VDC by the MB38s motherboard.
PS38 Power Adaptor can be directly plugged in the mains socket on the wall. The
connection to the system is established via the built-in cable that is directly
connected to PS38CR. The 8-pin RJ plug at the end of this cable is to be attached
to the 8-pin RJ socket (named POWER) on MB38s motherboard.
The pin-out of the POWER socket on MB38s motherboard is illustrated in the
following table.

Karel MS38s Installation & Maintenance Guide
Edition 3.1
6
POWER Socket
Pin Signal
1 GND
2 GND
3 - 24 VDC
4 - 24 VDC
5 + 8 VDC
6 + 8 VDC
7 GND
8 64 Vrms (Ring)
The dimensions of PS38 are 11 cm x 6 cm x 8 cm and the weight is 0.25 kg.
I.2.B. POWER FAILURE TRANSFER STATIONS
In case of power failure the stand-by battery backup allows the system resume
operation without any interrupt.
In case there is no battery connected to the system when the power goes off, the
four lines (lines 01, 02, 03 and 04) are automatically connected to first 4 extensions
(extensions 11, 12, 13 and14), respectively.
See the following figure illustrating the power failure transfer stations of MS38
system.
Figure A-6
I.3. EXTERNAL MUSIC CONNECTOR
Any external music source (tape recorder, radio or CD player) can be connected to
the system to be used for background music facility and to be transmitted to the
parties parked or put on hold. This connection is established via the 2-pin MUS
connector on the MB38s motherboard.
I.4. EXTERNAL RELAY
An external relay which is rated for 250 VAC - 24 VDC at a maximum current of 2 A
exists on the system motherboard to be used to activate either a door opener, an
external ringer, an external music source or an external announcement system.
The connection to the external relay is established through the 2-pin XREL
connector on the MB38s motherboard. The selection among these devices is made
by programming.

Karel MS38s Installation & Maintenance Guide
Edition 3.17
II. ACCESSORIES
To offer you a full telecommunication system, MS38s is equipped with many
accessories. These accessories are shown in the following figure and explained
one by one in the following sections.
Figure A-7