• 2G
    second generation
  • 3G
    third generation
  • 3GPP2
    Third Generation Partnership Project Two
  • ABA
    Architectural Barriers Act
  • ac
    alternating current
  • ACEG
    alternating current equipment ground
  • ACK
  • ACL
    access control list
  • ACR
    attenuation-to-crosstalk ratio
  • ACRF
    attenuation-to-crosstalk ratio, far-end
  • ACS
    access control system
  • ACWP
    actual cost of work performed
  • ADA
    Americans with Disabilities Act
    Americans with Disabilities Act Accessibility Guidelines
  • ADF
    area distribution facility
  • ADO
    auxiliary disconnect outlet
    adaptive differential pulse code modulation
  • ADR
    alternative dispute resolution
  • ADSL
    asymmetric digital subscriber line
  • A&E
    architecture and engineering