To minimize data security problems when using BSC dial-up lines, always specify AUTODISC=YES on the LINE(nnnn) statement for each dial-up line. When you specify AUTODISC=YES, JES2 disconnects a line automatically by simulating a $E command sequence when it detects a not-ready data set condition. (The circumstances in which JES2 detects a not-ready data set condition depends on different factors, including line configuration.)

If you specify AUTODISC=NO or do not specify this parameter during initialization, the line remains active; JES2 waits for either the data set to be made ready or the operator to take action.

Ensure that remote operators sign off before disconnecting a line. If a line-drop or a disconnect occurs on a dial-up line before signoff, another user might connect to the same port and receive data intended for the prior user of that port. (To ensure the transmission of data to the proper authorized remote terminals, use SNA or dedicated lines.)

For both SNA and BSC RJE workstations, you can also cause JES2 to automatically disconnect an inactive RJE workstation by coding a nonzero value for the DISCINTV= parameter on the RMT(nnnn) statement at JES2 initialization, the $ADD RMT(nnnn) command, or the $T RMT(nnnn) command while the member is inactive. When the amount of time specified in the DISCINTV= parameter elapses with no data sent or received on the line, JES2 disconnects the line by simulating a $E command sequence.