NT1 (Network Termination 1)

In ISDN, the logical interface to the carrier side of the connection,

performing such functions as signal conversion, synchronization, multiplexing, frame alignment, echo cancellation, line maintenance, and performance monitoring of the local loop. Such functions correspond to Layer 1 (Physical Layer) of the OSI Reference Model. See also Echo canceller, ISDN, local loop, multiplexing, NT, NT2, OSI Reference Model, and synchronization.

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• AT&T Technologies
• ATIS
• ATIS (Alliance for Telecommunications Industry Solutions)
• ATIS (Alliance for Telecommunications Industry Solutions)
• ATM Adaptation Layer (AAL)
• ATM (Asynchronous Transfer Mode)
• ATM (Asynchronous Transfer Mode)
• ATM (Asynchronous Transfer Mode)
• ATM-based passive optical network (APON)
• ATM Forum
• ATM Forum
• atmosphere
• ATM reference model
• ATM reference model
• ATM reference model
• A-to-D (Analog-to-Digital)
• Atom Publishing Protocol (APP)
• ATSC
• ATSC (Advanced Television Systems Committee)
• Attached Resource Computer Network (ARCNET)
• attachment unit interface (AUI)
• attendant access
• attenuation
• attenuation-to-crosstalk ratio (ACR)
• attenuator