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CHAPTER 4: Configuration
If you changed the number of stop bits on the command sub-channel (the
sub-channel to which you are now connected), reprogram your terminal for the
new value, so that you will be able to continue.
After completing the required actions, type
Q
to return to the SUB-CHANNEL
CONFIGURATION screen.
11. MINISTAT-FOUR-TO-DTE SOFTWARE FLOW CONTROL Screen
Purpose:
View the current status of software flow control used on this sub-channel
and select, if desired, a new status.
Description:
The MiniStat-Four must be able to command the DTE connected to it to interrupt
the flow of data when the MiniStat-Four’s buffers fill, and restart the flow when the
MiniStat-Four can accept new data for transmission. This function is mandatory
whenever statistical multiplexors are used, in addition to the end-to-end flow-
control function (see subsections 12 and 13).
Some DTEs have the capability to stop data flow when receiving a special character,
X-OFF, and renew data flow when receiving another character, X-ON (see
subsections 3 and 4). This capability is termed “software flow control,” and the
MiniStat-Four can be programmed to use it by selecting the ON option at this
screen.
When the DTE cannot recognize the X-ON and X-OFF characters, you must select
the OFF option. In this case, the control of data flow between the MiniStat-Four
and the DTE connected to it is performed via the dedicated handshaking lines
contained in any RS-232 interface.
NOTE
The CTS line of the MiniStat-Four is always active, regardless of the
selection made on this screen.
Screen selections are as follows:
Code numbers 1 and 2 list the available selections for software flow-control status:
(1) ON or (2) OFF.
Code Q is used to return to the SUB-CHANNEL CONFIGURATION screen.
The CURRENT STATE line shows the current status for software flow control on
this sub-channel.
