Technical Terms and Definitions

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Telecommunications

A-law Duplex OC-1
Attenuation E Channel OC-192
B Channel E.164 OC-256
B8ZS E3 OC-3
Back-Haul EIA-232-D OC-48
Background Noise Electronic Switching System OC-768
Balance Error Ones Density
Balanced Error Rate Open
Balanced Circuit ESF Open Wire
Bandwidth EU Out-of-band signalling
Baseband Facilities Pair
BECN Facilities Network Paired Cable
BER Facility Parity Bit
Binary FDL Patch Panel
Bipolar Signalling FECN Payload
Bit Clock Feedback Phase
Bit Synchronous Fiber Optics Phase Modulation
BPS Frame Phase-Shift Keying
Bridging Frame Relay Pinouts
Broadband Framing Point-to-Point
Buffer Frequency Division Multiplexing POTS
C Bit Frequency Modulation Premises
CAP Frequency-Shift Keying PRI
Carrier Gain RADSL
Carrier System Gigabit Relay
Central Office H Channel Remote Access
Centrex Half-Duplex RJ-48C
CFA HDSL SDSL
Channel Hertz Serial
Channel Bank IDSL Serial Transmission
Circuit ILEC Signal
Circuit Noise Level Interface Device Signalling
Circuit Switching ISDN Smartjack
CO Kbps SMDS
Coax Kilobit Span
Common Carrier LAPF Splice
Connection LATA STP
CPE Leased Line Subchannel
CSU/DSU Line SVC
D Channel Line Noise Switch Room
DACS Line Speed Switched 56
Data Communications LOA Switching
Data Link Load Synchronous Transmission
Data Link Layer Loading Coil T-2
DCE Local Loop T-Carrier
Dedicated Line Loopback Test T1
Demarc M23 Tariff
Dense Wavelength Division Multiplexing (DWDM) Mbps Telecommunications
Dial-up Multiplexing Telephony
Digital Multiplexor Telex
Digital Facility MUX Time-Division Multiplexing
Digital Signal N-ISDN Transmitter
Digital Signal Level NID UTP
Digital Transmission NIU VDSL
Doubler Noise Virtual Circuit
DSLAM NT-1 Wireless
DSX OC xDSL