A

• Action point name
• Adaptive communications
• ADSL loop extender
• Aeronautical Fixed Service
• AIDR
• Airborne radio relay
• Anisochronous
• Arbitrary slice ordering
• Articulation score
• Asynchronous communication
• Asynchronous operation
• Attack time
• Attenuation-to-crosstalk ratio
• Audit (telecommunication)
• Audit trail
• Automated information systems security
• Automatic baud rate detection
• Autonomous telepresence
• Availability
• Available Revenue Time
• Average call duration
• Aviation communication

B

• Back-channel
• Back-to-back connection
• Backward channel
• Balance return loss
• Bandwidth compression
• Base station identity code
• Base transceiver station
• Basic service
• Basic service element
• Bearer service
• Bias distortion
• Bill and keep
• Bill shock
• Bipolar signal
• Bit-sequence independence
• Black facsimile transmission
• Black recording
• Blind transmission
• BORSCHT
• Building Integrated Timing Supply
• Business internal dialing
• Busy hour
• Busy hour call attempts
• Busy override

C

• Call detail record
• Call shop
• Call-second
• Called party
• Called subscriber identification
• Calling party
• Carrier Ethernet
• Carrier frequency
• Carrier grade
• Carson bandwidth rule
• Center frequency
• Channel reliability
• Channel state information
• Clock domain crossing
• Combined distribution frame
• Comfort noise
• Communications jamming
• Communications survivability
• Complementary code keying
• Contention (telecommunications)
• Continuous transmission mode

C cont.

• Conventional radio
• Crosstalk (electronics)
• Customer proprietary network information

D

• Data compaction
• Data link
• Data rate units
• Degradation (telecommunications)
• Degree of start-stop distortion
• Demand load
• Demarc extension
• Desensitization (telecommunications)
• Design layout record
• Dial peer
• Dialer
• Dialer Management Platform
• Antenna gain
• Distortion-limited operation
• Distribution frame
• Disturbance voltage
• Diversity combining
• Drop (telecommunication)
• Dropped Call Rate

E

• Effective data transfer rate
• Effective Earth radius
• Effective transmission rate
• End instrument
• Erlang (unit)
• Error vector magnitude
• Extinction ratio

F

• Facility (telecommunications)
• Falsing
• Feeder line (network)
• Femtocell
• Five by five
• Fixed Dialing Number
• Four-wire terminating set
• Frameworx
• Full width at half maximum

G

• Gating (telecommunication)
• Global Title
• Ground constants

H

• Hagelbarger code
• Halftone characteristic
• Hard copy
• Harvard sentences
• Hierarchical cell structure
• High Speed Link
• Hybrid balance

I

• IDTV
• Independent clock
• Index of cooperation
• Information transfer
• Information-bearer channel
• Information-transfer transaction
• Intelligent Network Interface Device
• Interchange circuit
• Intercharacter interval
• Intermediate distribution frame
• International gateway
• Interposition trunk
• IP audio codec
• IP codec
• Isochronous

K

• K-factor (telecommunications)
• Kendall effect
• Keying (telecommunications)
• KRONE LSA-PLUS

L

• Layered system
• Link (telecommunications)
• Link margin
• List of telephony terminology
• Loading
• Local Dialing Disparity
• Location Area Identity
• Logic Trunked Radio
• Longitudinal voltage
• Loop start

M

• Main distribution frame
• Maximal-ratio combining
• Media gateway
• Mediation function
• Meet-me-room
• Mesochronous network
• Message format
• Misdialed call
• Mobile Internet growth
• Mobile phone penetration rate
• Mobile phone signal
• Mobile switching centre server
• Modulation error ratio
• Multi-frequency time division multiple access
• Multipoint Control Unit

N

• Naked DSL
• Net gain
• NetExpert
• Network interface device
• Noise temperature
• Non-line-of-sight propagation

O

• Objective Systems Integrators
• On-hook
• Operations support system
• Operator logo
• Optical modulation amplitude
• Optical power budget
• Optical power margin
• Out-of-band infrastructure
• Overmodulation

P

• Personal numbering
• Phantom circuit
• Phase noise
• Phase perturbation
• Pilot signal
• Plesiochronous
• Plesiochronous difference
• Post over IP
• Power budget
• Power ramp
• Priority call
• Proceed-to-select
• Processing delay
• Propagation constant
• Protective distribution system
• Psophometric voltage
• Public call office
• Public data transmission service
• Pulsa
• Pulse duration

Q

• Qualdir
• Quantization error
• Quasi-analog signal
• Queuing delay

R

• Radio silence
• Rayleigh fading

R

• Received noise power
• Receiver attack-time delay
• Recovery procedure
• Reference noise
• Reflection coefficient
• Release time (telecommunication)
• Remote call forwarding
• Round-trip delay time
• Route reestablishment notification
• Routing and wavelength assignment
• Rural radio service

S

• Serial access
• Serially Electrically Erasable Memory
• Service control point
• Signal compression
• Signal reflection
• Signal regeneration
• Signal transition
• Simplex circuit
• Slip (telecommunication)
• Spatial correlation
• Spectral width

S cont.

• Speed of service
• SPRM
• Squelch
• Standard test signal
• Start signal
• Steady-state condition
• Stop signal
• Synchronous network
• Systems control

T

• Tele-cocooning
• Telecommunications link
• Telecommunications service
• Telephone Balance Unit
• Teletraffic engineering
• The Telecom Commercial Communication Customer Preference Regulations, 2010
• Time division multiple access
• Timeout (computing)
• Timing advance
• Tip and ring
• Traffic engineering (telecommunications)
• Traffic flow (computer networking)
• Traffic intensity

T cont.

• Traffic mix
• Traffic volume
• Transactive communication
• Transceiver
• Transmission time
• Transmitting subscriber identification
• Trunked radio system
• Two B Channel Transfer

U

• Universal multimedia access
• Universal service
• User information

V

• Virtual private number
• Vector Directory Number
• VoATM
• Voice engine
• Voice over IP
• Voice procedure
• Voice-operated switch

W

• Wangiri
• Wireline (networking)

Z

• Zone Usage Measurement