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Information Systems Technician Training Series, Module 5 - Communications Center Operations | Next
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NAVAL COMMUNICATIONS PROCESSING
AND ROUTING SYSTEM
The Naval Communications Processing and
Routing System (NAVCOMPARS) is an automated
system that serves as the interface between AUTODIN
or other networks ashore and operational units of the
Navy. There are five NAVCOMPARS sites: NCTAMS
EASTPAC, NCTAMS WESTPAC, NCTAMS MED,
NCTAMS LANT, and NAVCOMMTELSTA Stockton,
California. The primary purpose of NAVCOMPARS is
to provide security, speed, and systems compatibility
for the Naval Telecommunications System (NTS). The
NAVCOMPARS system provides the following
services:
On-line communications with AUTODIN
switching centers;
On-line communications with tactical and
dedicated circuits;
Off-line communications interface capabilities;
Processing of JANAP 128-formatted messages;
Conversion of DD Form 173 messages to
JANAP 128 format;
Conversion of modified ACP 126-formatted
messages to JANAP 128 format;
Filing, retrieving, and accountability of
messages;
Local delivery analysis;
Distribution assignment;
Message store-and-forward capability to fleet
units;
Fleet support through broadcast management or
full-period terminations and primary ship-shore
circuits;
Broadcast keying and screening;
On-line communications with the Worldwide
Military Command and Control System
(WWMCCS); and
On-line communications with Common User
Digital Information Exchange System
(CUDIXS) and Remote Information Exchange
Terminals (RIXTs). (CUDIXS and RIXT
systems are discussed later.)
Automation of these functions and services
eliminates manual processing and minimizes related
delays and errors. Automation also improves
originator-to-addressee delivery time and allows the
timely exchange of information critical to the command
and control of forces afloat.
LOCAL DIGITAL MESSAGE EXCHANGE
The Local Digital Message Exchange (LDMX)
provides automatic outgoing message routing and
reformatting for Navy activities ashore. It
simultaneously transmits and receives messages over
the AUTODIN and other remote terminal circuits. The
LDMX system provides high-speed processing, system
reliability, secure communications, flexibility,
statistical information, and accounting data.
High-Speed Processing
The LDMX system provides high-speed
communications processing. On-line to AUTODIN and
other circuits, the LDMX system automatically
receives, identifies, and files traffic for processing and
future reference. Incoming messages are automatically
arranged by precedence; then processed, edited, and
printed on reproducible mats for delivery.
Outgoing traffic is entered by magnetic or paper
tape. The system formats the outgoing message, creates
a header, and validates the message identifiers,
precedence, and classification. The LDMX system also
searches system files to assign the correct routing
indicator and arranges the message by precedence for
automatic transmission. Operating at full capacity, the
system can process up to 7,500 messages per day.
System Reliability
Message-processing reliability has been greatly
improved by automatic message identification and
header preparation and by system look-up files instead
of manual files. The elimination of most manual
functions and validation of those remaining greatly
reduce misroutes and nondeliveries. The system
continues to operate in either a semiautomatic or
manual mode if a major component becomes
inoperable.
Secure Communications
All message security fields are validated. If a
mismatch is detected in the LDMX system, the message
will be displayed to an inrouter or an outrouter for
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