Skip to content
Vinony
Sections
Maps
Timeline
Graph
Cosmos
Life
Culture
Innovation
People
Climate
Trends
Art
Browse
Search
Search Vinony…
⌘
K
Sign in
Category
Link access protocols
page 1
Link Access Procedure Balanced
thumb|200px|LAPB state Diagram Link Access Procedure, Balanced (LAPB) implements the data link layer as defined in the X.25 protocol suite. LAPB is a bit-oriented protocol derived from HDLC that ensures that frames are error free and in the correct sequence. LAPB is specified in ITU-T Recommendation X.25 and ISO/IEC 7776. It implements the connection-mode data link service in the OSI Reference Model as defined by ITU-T Recommendation X.222.