| AC |
|
Access Channel |
| ABC |
|
Advanced Broadband Communications |
| ACA |
|
Adaptive Channel Allocation |
| ACC |
|
Austrian CCITT Committee |
| ACD |
|
Automatic Call Distribution |
| ACE |
|
Automatic Cross-Connection Equipment Advisory Committee on Information Technology Standardization (SOG_IT) |
| ACF |
|
Auto correlation function |
| ACI |
|
Adjacent Channel interference |
| ACK |
|
Acknowledge |
| ACPR |
|
Adjacent Channel Power Rejection |
| ACTS |
|
Advanced Communication Technologies and Services (European Union sponsored projects.) |
| ACTE |
|
Approvals Committee for Telecommunications Equipment |
| ACTOM |
|
Advisory Committee on Technical and Operational Matters (of Inmarsat) |
| ADM |
|
Adaptive Delta Modulation |
| ADSL |
|
Asymmetrical Digital Subscriber Line |
| ADPCM |
|
Adaptive Digital Pulse Code Modulation |
| AGC |
|
Automatic Gain Control |
| AGCH |
|
Access Grant Channel |
| AIN |
|
Advanced Intelligent Network |
| AM |
|
Amplitude Modulation |
| AMPS |
|
Advanced Mobile Phone System |
| ANSI |
|
American National Standards Institute |
| APC |
|
Adaptive Predictive Coding |
| ARDIS |
|
Advanced Radio Data Information Systems |
| ARFCN |
|
Absolute Radio Frequency Channel Numbers |
| ARIB |
|
Association of Radio Businesses - Japan |
| ARQ |
|
Automatic Repeat Request |
| ASIC |
|
Applications Specific Integrated Circuit |
| ATC |
|
Adaptive Transform Coding |
| ATM |
|
Asynchronous Transfer Mode |
| AUC |
|
Authentication center |
| AWGN |
|
Additive White Gaussian Noise |
