41,381 telecom acronyms and abbreviations > page 4

A: Application Layer 
a: Archive Library 
a: Area 
a: Atto... 
a: Availability 
A: Hypertext Anchor 
A!E: Automatic Cross-connection Equipment 
A&D: Analysis and Design 
A&E: Arts and Entertainment Network 
A&M: Additions and Modifications 
A-A: Analog to Analog 
A-BPSK: aviation-binary phase shift keying 
A-D: analog to digital 
A-MAP: A-field MAP 
A-QPSK: Aviation Quadrature Phase Shit Keying 
A-SAE: ASE Service Alteration Element 
A-SNE: ASE Service Notification Element 
A-TDMA: Advanced TDMA 
A-TO-D: Analogue-to Digital 
a-wire: A-wire of the two wire PSTN line 
A/A: Analog to Analog 
A/C: Air Conditioner 
A/D: Add/Drop 
A/D: analog-to-digital 
A/D: analogue-to-digital 
A/D-D/A: Analog-to-Digital or Digital-to-Analog 
A/E: Actual to Estimated 
A/G: air to ground 
A/m: ampere per meter 
A/N: Alphanumeric 
A/PC: Auto PC 
A/R: Alternate Route 
A/S: Asynchronous/Synchronous 
A/S/C: Alarm, Status and Control 
A/SYS: Access System 
A/V: Audio/Visual 
A1S: All Ones 
A2DP: Advanced Audio Distribution Profile 
A3: Authentication Algorithm A3 
A5/1: Encryption Algorithm A5