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FM 11-23
ceived or sent via signal communications means. i. Signal Center. A groupment of signal com-
A communications center normally contains a munication facilities installed, operated, and
message center section, cryptographic (crypto) maintained by a Signal Corps unit. Each signal
section, messengers, and telegraph and/or tele- center normally provides the following: communtypewriter
terminal equipment for transmitting ications center, switching central, technical conand
receiving messages. Other capabilities such trol center, and appropriate external means of
as facsimile, tape relay and data transmission signal communiations. There are two types of sigmay
be provided when authorized.
nal centers grouped within this term: area signal
d. Communications-Electronics. The direction
center and command signal center.
and systematic employment of devices and tech- j. Switching Central. A facility in a comniques
designed to acquire or transmit informa- munication system utilized to manually or autotion
essential to the command control of friendly matically interconnect telephone, teletypewriter,
military forces, and to counteract the effective- data, or radio telephone circuits temporarily in
ness of similar operations conducted by the response to a subscriber request. Differs from a
enemy.
patching panel central which interconnects circuits
e. Message Center. A communications activity,
on a semipermanent basis.
normally found as an element of a communica- k. Technical Control Center. A communications
center, charged with the responsibility for tions center work area containing distribution
acceptance and processing of messages to be sent frames and associated jacks or switches through
via signal communication means and for receipt which equipment and facilities are patched to arand
delivery of incoming messages. Delivery of range the desired circuit. The center is charged
incoming messages normally will be made to a with the responsibility of maintaining optimum
commander or unit distribution center.
performance of teletypewriter, data, telephone,
and radio circuitry. Various types of test equipf.
Operational Control/Operational Command ȯmmandment are utilized in exercising circuit/facility
Thosne functions of command snvolvng ag the conm-t quality control. Technical control centers coordiposition
of subordinate forces, the assignment of nate the routing of circuits within their assigned
tasks, the designation of objectives and the auportion
of the communications system.
thoritative direction necessary to accomplish the
mission. Operational command should be exer- I. Traffic (Communications). All transmitted
cised by the use of the assigned normal organiza- and received messages.
tional units through their responsible commanders
or through the commanders of subordinate 1-5. Comments on Publication
forces established by the commander exercising
operational command. It does not include such Users of this manual are encouraged to submit
matters as administration, discipline, internal or- recommendations to improve its clarity or accuganization,
and unit training, except when a sub- racy. Comments should be prepared according to
ordinate commander requests assistance.
AR 310-3 and keyed to the specific page, paragraph,
and line of the text in which the change is
g. Overjump. The techniques of employing tro- recommended. Reasons should be provided for
pospheric scatter radio equipment to reconstitute
each comment to insure understanding
the
and
TACS when transmission
comthe
Tsio whentransbecomeisioentble
centers or
ortanstrans-
th plete evaluation. Comments should
mission
be prepared
subcenters become inoperable and the using DA Form 2028 (Recommended Changes to
distance between operable centers or subcenters Publications) and forwarded direct to the Co
exceeds the range of conventional multichannel
Publications)
manding Officer,
and
U.S.
forwarded
Army
direct
Combat
to the
Developmanding
Officer, U.S. Army Combat Develop-
Comments
Command Communications-Electronics
h. Patching Central. A facility in a communica- Agency, ATTN: Doctrine Division, Fort Montions
system utilized to interconnect circuits on a mouth, New Jersey 07703. Originators of prosemipermanent
basis, to fulfill circuit routing re- posed changes which would constitute a signifiquirements,
or to improve quality of circuits. cant modification of approved Army doctrine may
Normally, a part of a facilities control center dif- send an information copy, through command
fers from a switching central which intercon- channels, to the Commanding General, United
nects established circuits temporarily in response States Army Combat Developments Command, to
to subscriber request.
facilitate review -and follow-up.
1-2