LAPD protocol implementation available

Vance Shipley vances@REDACTED
Sun Jan 2 03:42:33 CET 2005


In a project last year I found I needed a LAPD protocol implementation
which provided an API to the Unacknowledged Information (UI) frame
service.  I wasn't able to find an existing implementation which exposed
the UI service to the user.  So to complete the project I implemented
my own version of the Link Access Procedures on the D-channel (LAPD) as
documented in ITU-T Q.921.  I did this to create an emulation environment
for GSM Abis interfaces.  This was work done simply in order to have a
testing environment for another commercial product we developed.

I am making this Erlang application available under a BSD opensource
license.  I'm not sure how likely it is that anyone will have a use for
this but I might as well share.  If nothing else the design documented 
in the User Guide might might be interesting for those building such 
communicating state machine applications.


More information about the erlang-questions mailing list