telecommunications service

In telecommunication, the term telecommunications service has the following meanings: 1. Any service provided by a telecommunication provider. 2. A specified set of user-information transfer capabilities provided to a group of users by a telecommunications system. Note: The telecommunications service user is responsible for the information content of the message. The telecommunications service provider has the responsibility for the acceptance, transmission, and delivery of the message. Source: From Federal Standard 1037C and from MIL-STD-188

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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 control
systems design
tactical communications
tactical communications system

tactical data information link a
tape relay
t carrier
technical control facility
teleconference
teletraining
terminal adapter
terminal equipment
ternary signal
thermodynamic temperature
third order intercept point

threshold
time assignment speech interpolation
time code ambiguity
minimum spanning tree
time division multiplexing
time domain reflectometer
time out
time scale
t interface
toll switching trunk
total harmonic distortion