Kdswhu   Introduction; General Description - Marine microSwitch Technical Manual

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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.
&KDSWHU   Introduction
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