Karel MS38s Operating and safety instructions

Karel MS38s
Telephone System
Installation
&
Maintenance
Guide
Edition 3.1

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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

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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.

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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

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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

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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.

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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.

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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

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II.1. CONSOLES, FEATURE PHONES - OP48(-H), LT48(-H)
OP48(-H) Consoles and LT48(-H) Feature Phones 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 (named LT/OP) on
the MB38s motherboard. The signaling between the system and consoles, feature
phones is illustrated in the following table.
MB38s Motherboard Telephone / DSS Card
LT/OP Socket Pin No Signal RJ Socket Pin No
1 +8 VDC 6
2 Busy -
3 A (ext.11) 3 (ext. 11)
4 B (ext.11) 4 (ext. 11)
5 GND 2
6 Data 1
The input of +8 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 all the extensions and 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 the BDP of OP48-H Handsfree Console are illustrated in the
following figures.

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Handsfree Key, Handsfree Volume Adjuster and Handsfree LED are available only on the handsfree versions.
Figure A-8
Figure A-9
The dimensions of OP48(-H) are 22 cm x 6.5 cm x 16 cm and the weight is 0.9 kg.

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II.1.B. LT48(-H) FEATURE PHONE
There are two types of LT48 Feature Phones, LT48 Feature Phone and LT48-H
Handsfree Feature Phone, the second one being half-duplex. The LT48(-H)
Feature Phone is equipped with a 2 x 16 menu driven LCD, which offers self
explanatory messages for the user to monitor the state of operation and access
many system features. Also, it is possible to make one touch dialing for accessing
any extension / line or activating most of the system features, by the help of the 10
programmable keys in the upper keypad.
The outlook of LT48-H Handsfree Feature Phone is illustrated in the following
figure.
Handsfree Key, Handsfree Volume Adjuster and Handsfree LED are available only on the handsfree versions.
Figure A-10
The dimensions of LT48(-H) are 22 cm x 6.5 cm x 16 cm and the weight is 0.9 kg.
II.2. MINI PRINTER – KY16
MS38s system offers Call Record Listing facilities, by keeping the records of the
external calls and storing them in its non-volatile memory against any power failure.
You may obtain these records by way of some external devices.
One of these external devices is KY16 Mini Printer, which gives 16-column printout
using an Epson type print head.

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The following figure illustrates the outlook of KY16 Mini Printer.
Figure A-11
The data cabling of KY16 is made via the 6-pin RJ socket (named LT/OP - the
same socket used by Karel Consoles / Feature Phones) on the MB38s
motherboard. The signaling between the system and KY16 is illustrated in the
following table.
MB38s Motherboard KY16 Card
LT/OP Socket Pin No Signal Connector Pin No
1 +8 VDC -
2 Busy 2
3 A (ext.11) -
4 B (ext.11) -
5 GND 1
6 Data 3
Below is a sample printout of a call record obtained from KY16.
Figure A-12
The dimensions of KY16 are 15 cm x 20.5 cm x 9 cm and the weight is 1.3 kg.

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• NOTE
Only one of the three CRL accessories - namely KY16 Mini Printer, CM38s CRL
Interface and/or PK38s PC-Console Interface or the serial printer - can be
connected to the system at a time. The selection among these devices is made
by programming.
II.3. SERIAL INTERFACE - CM38s, PK38s,
CM38s+PK38s, SERIAL PRINTER INTERFACE
II.3.A. CM38s CALL RECORD LISTING INTERFACE AND/OR
PK38s PC-CONSOLE INTERFACE
Using the serial communication port on MB38s motherboard, a PC can be
connected to the system. KAREL provides two modules for PC connection:
CM38s and PK38s.
CM38s CALL RECORD LISTING INTERFACE
Call records, which are transferred to the PC via the serial communication port on
MB38s motherboard, are processed by the CM38s CRL software. A 3.5" diskette
with the necessary software, a 5 meter long cable for PC-Exchange connection and
a security plug are provided. The cable has a 25-pin D-type plug at the PC end and
a 4-pin RJ plug at the exchange end, to be attached to the 4-pin RJ socket (named
CM) on MB38s motherboard.
The software operates under Windows.
PK38s PC-CONSOLE INTERFACE:
PK38s PC-Console is the software, which enables you to supervise your system
via your personal computer, by monitoring the states of extensions / lines or
checking and editing all the system parameters. A 3.5" diskette with the necessary
software, a 5 meter long cable for PC-Exchange connection and a security plug are
provided. The cable has a 25-pin D-type plug at the PC end and a 4-pin RJ plug at
the exchange end, to be attached to the 4-pin RJ socket (named CM) on MB38s
motherboard.
The software operates under DOS.
CM38s+PK38s:
This is a combined unit of CM38s and PK38s modules. These programs are the
same as the ones described above and they run independently, but cooperatively.
Two 3.5" diskettes one with CM38s and the other with PK38s software, a 5 meter
long cable for PC-Exchange connection and a security plug are provided. The
cable has a 25-pin D-type plug at the PC end and a 4-pin RJ plug at the exchange
end, to be attached to the 4-pin RJ socket (named CM) on MB38s motherboard.

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• PC REQUIREMENTS :
The PC to be used with MS38s should have the following specifications:
a) 640 KB RAM (at least)
b) Windows (not older than 3.1)
c) A harddisk
d) A serial port
• SIGNALING AND COMMUNICATION PARAMETERS :
The signaling between the system and the PC is illustrated in the following
table. Since the PC-Exchange cable has a 25-pin plug at the PC end, it is
necessary to employ a 25-pin to 9-pin converter plug, in order to use the 9-pin
connector of the PC:
MB38s Motherboard PC
CM Socket Pin No Signal 25-pin Connector
Pin No 9-pin Connector Pin No
1 PC GND 7 5
2 TXD 3 2
3 RXD 2 3
4 Busy - -
The signal names above are given with respect to MS38s system and these
pin assignments are valid only for IBM compatible devices. If your device is not
IBM compatible, then you must provide the requested pin connections to
match the signaling parameters of the system.
The communication protocol for PC - Exchange connection is illustrated in the
following table:
For PC
Data Bits 8
Stop Bit 1
Parity None
Baud Rate 4800 Bps
The CM38s and PK38s modules are able to set the communication protocol to
the appropriate values, automatically.

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• DATA FORMAT OF CM38S :
A call record consists of two lines, each followed by Carriage return (0Dh) and
Line Feed (0Ah) characters.
Structure of the first line:
Starting Character
Position Field Width Information
1 1 #; indicates start of record
2 4 4 digit counter value
6 1 Space
7 4 or 2 Call type
11 1 Space
12 1 Common Pool information
- Call type:
LDIS Long Distance
INTL International
IC Incoming
Call type field and the preceding space are not sent to the PC for local calls.
- Common pool information field contains the character “C” for the calls made
from the common pool. If the call is not made from the common pool then
this field and the preceding space are not sent to the PC.
Structure of the second line:
Starting
Character
Position
Field
Width Information
1 8 Date in the format dd/mm/yy
9 1 Space
10 8 Starting time of the call in the format hh:mm:ss
18 1 Space
19 8 Ending time of the call in the format hh:mm:ss
27 1 Space
28 5 Call duration in the format mm:ss
33 1 Space
34 4 Starting extension number, OPE for the operator
and Dtt for the incoming calls coming from a
DISA line where tt is the line number.
38 1 Space
39 4 Ending extension number, OPE for the operator.
43 1 Space
44 3 Call info
47 1 Space
48 2 Line number

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50 1 Space
51 4 Metering Pulse count
55 1 Space
56 7 Call cost
63 1 Space
64 variable Number dialed
• NOTES:
Only one of the three CRL accessories - namely KY16 Mini Printer, CM38s
CRL Interface and/or PK38s PC-Console Interface or the serial printer - can
be connected to the system at a time. The selection among these devices is
made by programming.
II.3.B. SERIAL PRINTER INTERFACE
Using the serial communication port on MB38s motherboard, any serial printer can
be connected to the system to have the reports of the call records and activated
system features.
The signaling between the system and the printer is illustrated in the following
table.
MB38s Motherboard Printer
CM Socket Pin No Signal 25-pin Connector
Pin No 9-pin Connector Pin No
1 PC GND 7 5
2 TXD 3 2
3 RXD - -
4 Busy 20 4
The signal names above are given with respect to MS38s system and these pin
assignments are valid only for IBM compatible devices. If your device is not IBM
compatible, then you must provide the requested pin connections to match the
signaling parameters of the system.
The communication protocol for Printer - Exchange connection is illustrated in the
following table.
For Printer
Data Bits 8
Stop Bit 1
Parity Even
Baud Rate 2400
You may need to configure the printer for these parameters by selecting
appropriate settings on the printer.
• NOTES:
Only one of the three CRL accessories - namely KY16 Mini Printer, CM38s
CRL Interface and/or PK38s PC-Console Interface or the serial printer - can
be connected to the system at a time. The selection among these devices is
made by programming.

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II.4. DOORPHONE – DY01
MS38s system has a built-in circuitry, which can drive DY01 Doorphone. Any user
of the system can access the doorphone and make a conversation with the party
near the doorphone. The voice path is full duplex. The doorphone has a ring button
on it. This ring button can be utilized to ring an external ringer or an extension
telephone. DY01 doorphone has a speech processor card inside the metal box.
The outlook and structure of DY01 is illustrated in the following figure.
Figure A-13
The pin-out of the 4-pin RJ socket (called DIA) used to connect DY01 to MB38s
motherboard is illustrated in the following table.
DIA Connector
Pin no Signal
1 SPEECH
2 GND
3 + 5 VDC
4 RINGGEN
The dimensions of the DY01 are 12 cm x 14 cm x 3 cm and the weight is 0.5 kg.
II.5. EXTERNAL ANNOUNCEMENT SYSTEM
Any external announcement system can be connected to MS38s system through
the 4-pin RJ socket (named DIA - the same socket used by DY01 doorphone) on
MB38s motherboard.
II.6. BATTERY BACKUP UNIT - BBU38s
BBU38s is a stand-alone power supply module enhanced with battery backup
circuitries.
BBU38s contains a transformer and a card, surrounded by a metal box. Inside the
metal box, there is also an empty space reserved for the battery.

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IMPORTANT
PS38 Power Adaptor is not used when BBU38s is connected to the MS38s system.
The outlook and the structure of BBU38s are illustrated in the following figure.
Figure A-14
BBU38s Battery Backup Module has a built-in mains cable which is to be attached
to the mains socket. The module has another built-in cable with an 8-pin RJ plug at
the end, which is to be connected to the corresponding socket (named POWER –
the same socket used by PS38 Power Adaptor) on the MB38s motherboard.
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.
By the help of BBU38s module, MS38s system can be backed up with a battery of
12 VDC in order to provide the continuity of the operation in case of mains failure.
For the cases where a battery is to be connected to the system, it is strongly
recommended to choose a dry batery for the proper operation.
The MS38s system that is equipped with a 12 V – 4 Ah battery can continue to run
for 4 hours under an average traffic of 35%.
BBU38s is also capable of charging the batery while the system power is on and
the system is running under low traffic. Besides, there exists a low voltage battery
cut-off circuitry, which turns itself off when the battery voltage goes below 8.5 VDC
and does not start until the battery voltage is above 11.5 VDC. So, preventing full
discharge of the batery BBU38s make the lifetime of the battery longer.