LAPD Link Access Procedure for D channel
LAPF Link Access Procedure for Frame – mode
LAPF Link Access Procedure for Frame C mode
LAPM Link Access Procedure for Modems
link access procedure channel D
LAP Link Access Procedure
LAPB Link Access Procedure Balanced
LAPB:Link Access Procedure-Balanced
LAPD:Link Access Procedure D-channel
Link Access Procedure Balanced
link access procedure F
link access procedure half-duplex
Link Access Procedure LAP
Link Access Procedure of D-Channel LAPD
Link Access Procedure， Balanced， LAPB
RDLAP Radio Data Link Access Procedure
balanced link access procedure
link access procedure on the d channel