Protocol Boundary for SNA Terminals with Condensed State Information
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-09
The Protocol Boundary provides a simple clean interface between the communications functions and the applications functions in a system network architecture (SNA) terminal. The interface makes it possible for the communications functions to execute on a separate microprocessor from the rest of the terminal. The key step in designing this interface was to reduce the protocol state information passing across the interface to a six-bit summary report (the BLIP) sent in reply to each request.