noun
LAPD
noun
1
A telecommunications signalling protocol (Link Access Procedures, D channel) used on the control channel of an ISDN connection.
"The technician traced the fault to a malformed LAPD frame on the D channel."
How to Use LAPD
Learner’s notesIn plain EnglishA technical networking term for the signalling protocol used on ISDN's control channel — not to be confused with the Los Angeles Police Department, which is usually written the same way.
Common mistake
In everyday text "LAPD" almost always means the Los Angeles Police Department; this technical networking sense is specialist and rare.
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The technician traced the fault to a malformed _____ frame on the D channel.