systems control

Systems control: In a communications system, the control and implementation of a set of functions that (a) prevent or eliminate degradation of any part of the system, (b) initiate immediate response to demands that are placed on the system, (c) respond to changes in the system to meet long range requirements, and (d) may include various subfunctions, such as (i) immediate circuit utilization actions, (ii) continuous control of circuit quality, (iii) continuous control of equipment performance, (iv) development of procedures for immediate repair, restoration, or replacement of facilities and equipment, (v) continuous liaison with system users and with representatives of other systems, and (vi) the provision of advice and assistance in system use.

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statement
steady state condition
step index profile
stopband
stop signal
store and forward switching center
stressed environment
stroke speed
sublayer
subscriber
substitution method

successful block transfer
sudden ionospheric disturbance
summation check
supervisory program
reduced carrier transmission
surface wave
survivability
switched loop
switched multimegabit data services
synchronism
synchronizing

synchronous network
synchronous orbit
system integrity
system lifecycle
systems design
tactical communications
tactical communications system
tactical data information link a
tape relay
t carrier
technical control facility

telecommunications service
teleconference
teletraining
terminal adapter
terminal equipment
ternary signal
thermodynamic temperature
third order intercept point
threshold
time assignment speech interpolation
time code ambiguity