🚀 go-pugleaf

In article <1992Dec31.023213.21653@magnus.acs.ohio-state.edu>, sgururaj@magnus.acs.ohio-state.edu (Sanjay R Gururaj) writes:
>Hi!
>
>Does anyone know what the difference is between SDLC (synchronous data
>link protocol) and HDLC (????)

This is a basic data comm question.  The bigest difference off  the bat is
that SDLC can poll multible remote stations.   HDLC is used in point to point
connections.   In an HDLC connect both a Primary and secondary station exist
at both ends.  In SDLC One station is a Primary and all the rest are secondarys.
 



>Any pointers to documentation on the above protocol would be appreciated.
>Thanks in advance.

If you are writting a driver you will need to get a hold of 
ANSI X3.66-1979, "American National Standard fo advanced data 
communications protocol procedures (ADCCP).    This document will 
cover the standards for both HDLC and SDLC.

ISO has specific document on HDLC.  

IBM has has a General ref on SDLC, sorry I don't have the numbers right
off but they are easy to find.  


If you just need general information, most basic Data comm books cover 
bitsync.

  Don't Let the bits byte,

        Louis

>
>sanjay gururaj
>
>Please send reply to sgururaj@magnus.acs.ohio-state.edu