Processing Host Directives During Communications Suspensions
Original Publication Date: 1984-Jun-01
Included in the Prior Art Database: 2005-Feb-04
This article describes a technique for preventing the cessation of communications between a printer and host during situations where operator intervention is required (IR). In a systems network architecture (SNA) environment a printer with limited buffering capability suppresses the processing of commands from the host during conditions requiring operator intervention, such as open covers, ribbon depletion and stop button depressed. Commands are not processed lest the host start a new session prior to the termination of the previous session. The host continues to wait for a response which is sent only if the IR condition is cleared. The host has no facility for terminating the session; hence, the entire system hangs up.