Marine microSwitch User manual

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Version 1.1.12- firmware
© Marine Communications Limited 1998
Marine Communications Limited November, 1998
59 Bownham Park,
Rodborough Common,
Stroud,
Glos GL5 5BZ
England
Telephone: [phone]
Fax: [phone]
Email: [e-mail]
Web: http://www.marinex.co.uk

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CONTENTS
&KDSWHU Introduction...........................................................1
1.1 General Description...........................................................................................1
1.1.1 Specifications....................................................................................................3
1.1.2 Basic Specifications..........................................................................................3
1.1.3 Environmental Specifications...........................................................................4
1.1.4 Power Supply....................................................................................................4
1.2 Requirements.....................................................................................................4
1.3 MicroAid ...........................................................................................................4
1.4 Extension Facilities ...........................................................................................4
&KDSWHU Installation.............................................................5
2.1 Pre-Installation Checks......................................................................................5
2.2 Physical Installation...........................................................................................5
2.3 Locating The Unit..............................................................................................6
2.4 Power Connections............................................................................................8
2.5 Exchange Connections ......................................................................................8
2.6 RS232 Call Log Serial Interface Connections.................................................10
2.6.1 Printer Data Format ........................................................................................11
2.7 Set Up Terminal Connections..........................................................................11
2.7.1 Terminal Data Format.....................................................................................11
2.8 Engineering Checks.........................................................................................12
2.8.1 Installation Checks..........................................................................................12
2.8.2 Bell Check ......................................................................................................12
2.8.3 Extension Number Check...............................................................................12
2.8.4 Off-Hook (locked out) Extensions..................................................................12
&KDSWHU System Configuration.........................................13
3.1 General.............................................................................................................13
3.2 Factory Configuration......................................................................................14
3.2.1 First Dialled Digit...........................................................................................14
3.2.2 Dial 6 Access..................................................................................................14
3.2.3 Dial 9 Access..................................................................................................14
3.2.4 * (Star) Features From Dial Tone...................................................................15
3.2.5 Features from Recall.......................................................................................15

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3.2.6 * (Star) Features from Recall..........................................................................15
3.2.7 Features from Recall – Engaged or NU..........................................................15
3.2.8 * (Star) Features from Engaged......................................................................15
3.2.9 * (Star) Features from Ringing.......................................................................15
3.3 Changing The Configuration...........................................................................16
3.3.1 Engineering Facility Mode .............................................................................16
3.3.2 Engineering Function List ..............................................................................17
3.4 Distinctive Ring Style......................................................................................19
3.5 Single ‘9’ Tie Line Access ..............................................................................19
3.6 Tie Line Gain Settings.....................................................................................19
3.7 Timings............................................................................................................19
3.7.1 Variable 2nd Designated Number access ........................................................19
3.7.2 DISA Activation.............................................................................................20
3.7.3 Release of tie lines..........................................................................................20
3.8 Pin Number......................................................................................................20
3.8.1 Printing PIN numbers.....................................................................................20
3.9 Phone Reset Facility........................................................................................20
&KDSWHU Maintenance........................................................21
4.1 Routine Maintenance.......................................................................................21
4.2 Battery Replacement........................................................................................21
4.3 Fault Finding ...................................................................................................22
4.3.1 All Telephones Dead......................................................................................22
4.3.2 One Telephone Dead......................................................................................22
4.3.3 All Telephones Live, But No Dial Tone.........................................................22
4.3.4 One Telephone Live, But No Dial Tone.........................................................23
4.3.5 Wrong Extension Obtained When Dialling....................................................23
4.3.6 Telephone Always Busy When Dialled..........................................................23
4.3.7 Telephone Always Unobtainable When Dialled ............................................23
4.3.8 All Telephones Fail to Ring, But Ring Tone can be Heard by Caller............24
4.3.9 One Telephone Fails to Ring, But Ring Tone can be Heard by Caller...........24
4.3.10 Intermittent Dial Tone....................................................................................24
4.3.11 Crosstalk on Conversation..............................................................................24
4.3.12 Unable to Obtain Shore Line..........................................................................25
4.3.13 Incoming Call Not Received ..........................................................................25
4.3.14 Call Logging Not Outputting Data.................................................................25
4.3.15 Loss or Change of Facilities...........................................................................25
Appendix A - Factory Configuration.........................................27

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&KDSWHU Introduction
1.1 General Description
The Marine Communications Limited MicroSwitch marine telephone exchange has been
designed to meet the special requirements of all internal and external telephone calls made on
board ship.
The key features of the MicroSwitch are:
•Internal communications
•Shore line, PA and SATCOM access
•Priority intrusion
•PC programmable
•Direct dial in and out
•Call logging
•Modular construction
•Automatic fax detection
•Music on hold
The MicroSwitch supports up to 32 extensions and 8 external lines, enabling connections to
shore lines, SATCOM and Public Address lines. Facilities are available to enable a maximum
of 4/8 connection circuits to be made at any time. The circuitry is enclosed in a compact case
for easy fitting to bulkheads.
The MicroSwitch priority intrusion facility enables a caller to interrupt a call currently taking
place on another extension.
The exchange is pre-programmed to provide specific facilities for Officer Class and Crew
Class extensions. These facilities are held within the exchange memory and can be changed to
suit individual requirements by using a telephone or an IBM PC (or compatible). The memory
is provided with its own battery support and any changes made to the set-up will be
maintained in the event of the exchange being disconnected from the power supply.
When connected to the external lines, incoming calls are directed to a pre-specified extension.
Outgoing calls are enabled for Officer Class phones and can be dialled directly by prefixing
the telephone number with a specific code.
Call-logging facilities are provided by the exchange to enable all outgoing and incoming calls
to be logged. The information logged includes the source extension, the number dialled and
the duration of the call. Output is through an RS232 serial interface.

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Future expansion and servicing of the exchange is carried out simply by adding or replacing
plug-in modules. To assist with maintenance and fault finding, a number of indicators are
provided on the modules to show the status of the exchange and the extension lines.
MicroSwitch will detect an incoming fax call tone and automatically transfer it to the
designated extension.
In the event of a power failure external lines are connected directly to specified extensions.
Please note that satisfactory performance cannot be guaranteed for every allowed combination
of host and subsidiary apparatus, in particular, certain modern electronic phones when set to
LD mode may not be recognised correctly.
CAUTION
microSwitch is designed for use on board ships. It may not comply with
specific statutory requirements such as EMC/PTT standards for use on
land based applications.

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1.1.1 Specifications
1.1.2 Basic Specifications
Capacity (maximum) 32 internal extensions (in blocks of 8). 8 external lines (in
blocks of 2). Maximum of 8 circuits can be made at any time.
External Connections Shore lines, SATCOMs, P.A. lines
External Signalling Push-button dual tone multi-frequency (DTMF) preferred.
Loop disconnect LD (Impulse) can be used, but with reduced
facilities.
Battery life
programme memory 5 years minimum
Frequency Range 300Hz to 5Khz at 3dB points
Cabling 2 wire throughout
Input Voltages 24V D.C. +/-10%, 2A peak, 1A nominal average. 250 mV
ripple. Indicators show if the D.C. supply is available.
Fuses - DC 5A anti surge 20mm
MTBF 10,000 hours (fully loaded system)
MTTR 30 minutes
Dimensions 320mm (H) x 390mm (W) x 150mm (D)
Weight Approx. 5Kg

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1.1.3 Environmental Specifications
The MicroSwitch exchange has been tested and meets with Lloyds Register ENV2 type
approval requirements.
Temperature
Operating
Storage 0 to +55 deg C 0 to +70 deg C
Humidity 5 to 95% relative humidity
Vibration 1.0mm amplitude at 2 to 13.2Hz
1g at 13.2 to 100Hz
1.1.4 Power Supply
It is recommended that the microSwitch is not powered directly from the ship’s emergency
supply as this will increase the background noise heard on the extensions.
1.2 Requirements
An IBM PC (or compatible) with a serial interface and the microAid program or a DTMF
telephone are required to program a MicroSwitch exchange.
1.3 MicroAid
microAid is a software utility to enable you to reconfigure the MicroSwitch. Full details about
microAid are provided in the microAid help file which is available from Marine
Communications Limited at the address given in the front of this handbook.
1.4 Extension Facilities
The MicroSwitch extensions are grouped into two user categories:
•Category A - Officer Class extensions
•Category B - Crew Class extensions
In addition there are Engineering facilities which are only available through a PIN access
code.
The Officer Class and Crew Class facilities are described in the MicroSwitch User Manual;
the Engineering facilities are described in this manual.

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&KDSWHU Installation
2.1 Pre-Installation Checks
Before unpacking the MicroSwitch exchange, check the packing carton for signs of damage.
Any damage to the carton should be reported to the supplier before proceeding.
Open the carton, carefully remove the contents and check for any signs of mechanical
damage.
Check that the documentation is present:
MicroSwitch User Manual
2.2 Physical Installation
The MicroSwitch should be installed in a location away from electrical noise and excess
vibration. Where possible the equipment should be located in a well ventilated area where it
will not be adversely affected by salt water and extremes of heat.
When locating the unit make sure you can access the modules and cable connectors.
Clearance should be allowed on each side of the case to avoid contact with neighbouring
equipment through vibration and shock.
The unit is supplied with the lid unsecured. This is to allow you to fit the lid so that it opens
either right handed or left handed depending on which is most convenient. In Figure 2-2 the
lid is hinged to the left.

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2.3 Locating The Unit
Figure 1 identifies the cabinet dimensions. Please refer to these when you are locating the
MicroSwitch in its permanent position.
Figure 1 Cabinet Dimensions
Loosely fit the top screw and manoeuvre the cabinet so that the screw slots into the top hole
on the rear of the cabinet. There is a covering cap on the hole for the top screw which needs
to be removed in order to place the unit and replaced once the unit has been placed and the
screw tightened. The bottom two screws are accessed from the front of the cabinet. See
Figure 2 on the next page.

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E
D
2
1
4
53
BC
A
F
G
Figure 2 MicroSwitch Unit - Front View
In the diagram, above the MicroSwitch is shown with the panel removed from the lower
section of the unit to show B and C screw positions. This section houses the terminal strips,
the power terminal block and the printer connection.
To open the door of the unit you need to undo screws Dand E. Rotate each screw one quarter
turn anti-clockwise and release the catches. Once the unit has been put in place all three
screws A, Band Cmust be tightened firmly. To access Band Cyou need to remove the cover
from the bottom panel of the unit.
NOTE: If you have more than 16 extensions then you need to remove one pair of modules
(Pair 4in Figure 2-2), to access screw A. To unplug the modules you need to
remove the top and bottom strips Fand Gby undoing the screws at either end of
the strips.
WARNING
Failure to tighten screws a, b, c firmly may cause the unit to loosen from its
mountings during continued vibration and so cause damage to the cabinet
and/or the modules.

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Ensure that the exchange is securely sited and that all cables to the exchange are arranged
tidily and secured such that they cannot pull the connectors out of the exchange.
Check that all the modules are fully plugged into the chassis and correctly located in their
card guides before applying power for the first time. A module could become loosened from
the chassis if there was excessive vibration. Two metal strips F and Gprovide additional
stability for the modules and must be fitted to prevent the modules from vibrating out of
position.
2.4 Power Connections
Power connection is via a two-way terminal block mounted in the lower right hand side of the
bottom section of the MicroSwitch unit. When connecting to the terminals, the power leads
should be pushed through from under the unit where there are a series of holes. (Remove the
grommet from the relevant hole.) See Figure 3 below.
- - - - - - -
RESET / PRINTER
Power Terminal
- +
24 V
D.C.
Figure 3 Power Terminal Connections
2.5 Exchange Connections
Connections between the exchange and the external equipment are through terminal screw
type connectors. Refer to Figure 4 for the connection pattern.

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Figure 4 Exchange Connections

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Processor
Board Switch
Module Power
Board
RS232 Computer Port
9 way D
Always flashing
No board in slot 1
Power
Extension
LED’s
Tie Lines
ringing Shore
Occupied
Power
Extension
LED’s
Tie Lines ringing
SATCOM
Occupied
Ringing LED
Bias LED
12V LED
5V LED
Main Power
Fuse
Bias Fuse
Ringing Fuse
Figure 5 microSwitch LED’s
This Figure 5 illustrates the position of the LED’s and fuses on the appropriate boards. The
diagram shows one switch module but you may have up to four modules. The latest power
boards do not have the Bias or Ringing fuses.
2.6 RS232 Call Log Serial Interface Connections
These connections are provided by an orange two part screw terminal strip located at the
bottom of the MicroSwitch. All the pins 1 to 8 are used with the exception of pin 6 which is
unconnected. The wiring to a 9-way PC serial connector is shown in the table.
An 8 pin connector is supplied with the unit.

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PIN SIGNAL PC 9 way
1 Signal Ground 5
2 Transmitted data from MicroSwitch 3
3 Received data to MicroSwitch 2
4 Ready To Send (RTS) - output from MicroSwitch 8
5 Clear To Send (CTS) - input to MicroSwitch 7
6 Not connected -
7 Reset 1 -
8 Reset 2
*Connect Pins 7 and 8 together to reset MicroSwitch to
user configuration.
-
2.6.1 Printer Data Format
The RS232 call log interface is configured to operate at 9600 baud, no parity, 8-bit data and
one stop bit.
If hardware control (RTS/CTS) is not being used then Pins 4 and 5 should be connected
together.
2.7 Set Up Terminal Connections
The terminal used for setting up the MicroSwitch is connected to a 9-way ‘D’ socket on the
front of the processor card. To access this connector, it is necessary to open the front panel.
The wiring to a 9-way PC serial connector is also shown in the table below.
PIN SIGNAL PC 9 way
2 Transmit data from the microSwitch 5
3 Receive data to the MicroSwitch 3
50V 2
7 Ready To Send (RTS) - output from MicroSwitch 8
8 Clear To Send (CTS) - input to MicroSwitch 7
2.7.1 Terminal Data Format
The terminal port is configured to operate at 9600 baud, no parity, 8-bit data and one stop bit.

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2.8 Engineering Checks
2.8.1 Installation Checks
Once the equipment has been installed, the MicroSwitch exchange should be powered up and
the indicator observed on the front panel to ensure that power is reaching the unit. Each
installed board should have the power LED illuminated.
A systematic check should now be made of all ‘in-service’ telephones to ensure that each
telephone is capable of dialling another telephone and is capable of being dialled. The speech
quality of each telephone should also be checked when each telephone is dialled.
Having verified the basic operation of each telephone, one of the Officer Class telephones
should be used to check the operation of each external line and to check that all the features
are working
It is recommended that no special programming of the MicroSwitch exchange should be
performed until satisfactory operation of the complete system has been established.
In the event of a fault being found during the installation checks, the following engineering
checks should prove useful in identifying the cause. Further help can be obtained by referring
to the Fault Finding section later in this document.
2.8.2 Bell Check
If you lift the receiver, dial *6, then replace the receiver, the telephone should ring to enable
the amplitude and operation of the bell to be checked.
2.8.3 Extension Number Check
If you dial your own extension number a high pitched ‘busy’ ringing tone should be heard.
2.8.4 Off-Hook (locked out) Extensions
A print out of all off-hook (locked out) extensions can be obtained from the call logging port
by dialling 73 when in Engineering Facility mode.

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&KDSWHU System Configuration
3.1 General
The MicroSwitch is supplied from the factory with a range of facilities already configured.
The Crew and Officer class facilities are described in the MicroSwitch User Manual.
Facilities requiring Engineering access mode are discussed in this manual.
The default configuration can be modified to suit on-board requirements by using a program
called microAid. The microAid software is available on a floppy diskette and is described in a
separate handbook. Limited reconfiguration can be carried out using a security PIN number
which allows access to the MicroSwitch system via a DTMF telephone.
If you reconfigure the MicroSwitch exchange we recommend that you print a record of the
new configuration details and keep them with this manual for reference.
IMPORTANT
You are strongly advised to ensure the satisfactory operation of the
complete system as described in the installation checks before you
implement any modifications to the factory configuration.

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3.2 Factory Configuration
The MicroSwitch exchange is supplied with the following configurations already defined:
3.2.1 First Dialled Digit
0Public address ‘65’
1 + xx (00-99) or
+x (0-9) For 3 digit extension number For 2 digit extension number
2 + xx (00-99) or
+x (0-9) For 3 digit extension number For 2 digit extension number
3 + xx (00-99) or
+x (0-9) For 3 digit extension number For 2 digit extension number
4 + xx (00-99) or
+x (0-9) For 3 digit extension number For 2 digit extension number
5 + x Hold numbers
6 Public Address access
7 Reserved
8 Night Bell pick-up
9 Outsides line access
* Star features
# Engineering
3.2.2 Dial 6 Access
A pin number may be required to be entered before the access digit.
1 Individual P.A. access number
2 Individual P.A. access number
3 Individual P.A. access number
4 Individual P.A. access number
5 Group P.A. access or ‘0’ access
6 Group P.A. access
7 Group P.A. access
8 Group P.A. access
3.2.3 Dial 9 Access
A pin number may be required to be entered before the access digit.
2SATCOM1
3SATCOM2
4SATCOM3
5 Land 1
6 Land 2
7 Land 3
8 SATCOM hunt group
9 Land hunt group

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3.2.4 * (Star) Features From Dial Tone
*2 + extension number Remote call forward **2 cancel
*3 + extension number call forward **2 cancel
*5 HHMM Alarm Set
*6 Self test ring back
*8 + extension number Pick up ringing phone
*9 Group Pickup
3.2.5 Features from Recall
1 + xx (00-99) or
+x (0-9) Transfer to a 3 digit extension number Transfer to a 2 digit extension number
2 + xx (00-99) or
+x (0-9) Transfer to a 3 digit extension number Transfer to a 2 digit extension number
3 + xx (00-99) or
+x (0-9) Transfer to a 3 digit extension number Transfer to a 2 digit extension number
4 + xx (00-99) or
+x (0-9) Transfer to a 3 digit extension number Transfer to a 2 digit extension number
5 +x Hold numbers
3.2.6 * (Star) Features from Recall
*5 Conference
*0 Broker
3.2.7 Features from Recall – Engaged or NU
1 Return to original call
3.2.8 * (Star) Features from Engaged
*1 Priority (intrusion)
*6 Call back when free
3.2.9 * (Star) Features from Ringing
*6 Call back when free

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3.3 Changing The Configuration
3.3.1 Engineering Facility Mode
There are a number of functions (engineering facilities) which are only available using an
access code. To enter the Engineering facility mode complete the following two steps:
Dial #. The number unobtainable tone will be heard.
ôEnter the Engineer PIN number (factory default is 5768). An intermittent dial tone
will be heard.
You can now carry out changes to the facilities, for example change a class of service or
change a PIN number and so on. Refer to the next table which lists the format.
If the change has been entered correctly you will hear the normal dial tone. However, if the
entry is incorrect the number unobtainable tone will be transmitted, in which case replace the
handset and retry. Care should be taken to enter each change correctly.
The exchange does not need to be rebooted after a change has been made.
NOTE: Only one change can be carried out each time the facility is used.
WARNING
If disable engineering pin is used then the only way to regain the function
is by using microAid.