LAPB (Link Access Procedure, Balanced)

• Control: A one-octet field that identifies the frame type. An information frame carries upper-layer information and some control data. A supervisory frame carries control information such as information-frame acknowledgement, request for retransmission, and flow control. An unnumbered frame carries control data such as disconnection request, acknowledgement, and frame rejection.

• Data: A variable-size field that contains an encapsulated packet.

• Frame Check Sequence (FCS): A two-octet cyclic redundancy check (CRC) field that provides error detection.

See also ABM, asynchronous, bit-oriented protocol, CRC, Data Link Layer, flag, HDLC, header, master/slave, Network Layer, OSI Reference Model, PLP, SDLC, trailer, and X.25.

• VCI (Virtual Channel Identifier)
• VCO (Voice Carry Over)
• VCO (Voice Carry Over)
• VCSEL (Vertical Cavity Surface-Emitting Laser)
• VCSEL (Vertical Cavity Surface-Emitting Laser)
• VDSL2 (Very-high-data-rate Digital Subscriber Line version 2)
• VDSL (Very-high-data-rate Digital Subscriber Line)
• vector
• vector quantization
• vector quantizing code (VQC)
• vector sum excited linear predictive coding (VSELP)
• velocity of light
• velocity of propagation (Vp)
• Veronica (Very Easy Rodent-Oriented Net-wide Index to Computerized Archives)
• vertical cavity surface-emitting laser (VCSEL)
• vertical redundancy check (VRC)
• very-high-data-rate digital subscriber line (VDSL)
• Very High Frequency (VHF)
• very-high-speed Backbone Network Service (vBNS)
• Very Low Frequency (VLF)
• very small aperture terminal (VSAT)
• vestigial sideband (VSB)
• VHF (Very High Frequency)
• video
• videoconference