LAPD protocol This topic has 1 reply, 1 voice, and was last updated 12 years, 1 month ago by Om Prakash. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts 25th April 2008 at 08:07 #52144 Mick7Guest Hi everyone. Pls tell me how in LAPD protocol to determine if it is a command or a response. As i understood there is C/R bit.But it can be decoded based on command/response basis. 5th August 2011 at 07:44 #52145 Om PrakashGuest Hi , Can anyone explain me the working of LAPD. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Telecom Design’ is closed to new topics and replies.