open source software (OSS)

See open source.

• access rate
• access service
• access tandem switch
• account code
• accounting management
• ACD (Automatic Call Distributor)
• ACELP (Algebraic Code Excited Linear Prediction)
• ACK (ACKnowledgement)
• acknowledgement (ACK)
• ACL (Asynchronous Connectionless Link)
• ACM
• acoustics
• ACR
• acronym
• acrylate coating
• active
• active
• ACTS (Advanced Communications Technologies and Services)
• adaptive differential pulse code modulation (ADPCM)
• Adaptive Transform Coder 3 (AC-3)
• ADC (Analog-to-Digital Converter)
• ADCCP (Advanced Data Communications Control Procedures)
• add/drop multiplexer (ADM)
• address
• address book