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Link access procedure

From Wikipedia, the free encyclopedia

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Link Access Procedure (LAP) protocols are data link layer protocols for framing and transmitting data across point-to-point links. LAP was originally derived from HDLC (High-Level Data Link Control), but was later updated and renamed LAPB (LAP Balanced).

LAPB is the data link protocol for X.25. Other related LAP protocols are:

MLP (Multilink Procedure)
LAPD (Link Access Prodecure D-channel)^[1]
LAPM (Link Access Procedure for Modems)
LAPF (Link Access Procedure for Frame Relay)^[2]

References

↑ "Other Link Control Protocol, LAPB, LAPD, LLC/MAC". Ebrary. Retrieved 2025-12-16.
↑ "Other Link Control Protocol, LAPB, LAPD, LLC/MAC". Ebrary. Retrieved 2025-12-16.

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