PRA (Primary Rate Access)

The user interface to an integrated services digital network (ISDN)

intended for large business applications in European countries and elsewhere outside of North America and Japan. Also known as 30B+D, PRA offers 30 bearer (B) channels for user payload, plus one data (D)

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• distribution frame
• diurnal wander
• Divestiture Decree
• DLC (Digital Loop Carrier)
• DLCI (Data Link Connection Identifier)
• DLL (Data Link Layer)
• DMT (Discrete MultiTone)
• DND (Do Not Disturb)
• DN (Directory Number)
• DNIS (Dialed Number Identification Service)
• DNR
• DNS
• DOCSIS (Data Over Cable Service Interface Specification)
• DOCSIS (Data Over Cable Service Interface Specification)
• DOCSIS (Data Over Cable Service Interface Specification)
• DOD (Direct Outward Dial)
• domain
• domain name
• Domain Name Resolver (DNR)
• Domain Name System (DNS)
• Domsat Decision (Domestic satellite Decision)
• dongle
• do-not-call registry
• do not disturb (DND)
• dopant