1ADJAdjacent DPC link set
2ADLAsynchronous Data link
3ADMAdd-Drop Multiplexer
4ADSLAsynchronous Digital Subscriber Line
5AMAAutomatic Message Account
6AMDAdvanced Micro Devices
7ANSIAmerican National Standards of Institue
8ATDMAsynchronous Time Division Multiplexer
9ATMAsynchronous Transfer Mode
10BHCABusy Hour Call Attemp
11B-ISDNBroadband ISDN
12CAMACentralized Automatic Message Account
13CASChannel Associated Signalling
14CCSCommon Channel Signalling
15CCS7Common Channel SignallingNo=7
16CMICode Mark Invention
17COFICodec Filter
18CPCall Processing
19CSMACarrier Sense Multiple Access
20DAAData Access Arrangement
21DCMEDigital Circuit Multiplex Equipment
22DDFDigital Distribution Frame
23DECTDigital European Cordless Telecommunication
24DPCDestination Code Point
25DSSIDigital Subscriber Signalling System 1
26DTMFDial Tone Multi Frequency
27DWDMDense Wavelength Division Multiplexer
28ETSIEuropean Telecommunications Standarts Institue
29FTTCFiber To The Curb/Curve