Access Port Special Characters; Special Characters Description; B: Enter Control Mode - HP 3000 Series Handbook

For HP Internal Use Only
This command allows the local console operator to allow usage of the remote support modem
by the system or by a remote operator. Once this command is issued from the console
terminal, the remote support modem is enabled.
If remote operator access had been enabled previously, the card will return to the remote
operator enabled state, allowing incoming calls to be connected as a mirrored console.
If remote operator access had been disabled previously, the card will return to the remote
operator disabled state, allowing system usage of this port for user sessions.
If the modem was already in the unlocked state, this command will have no additional effect.
This command does not affect the state of remote operator access (either enabled or disabled).
After unlocking the remote support modem access, if remote operator access was enabled
before locking, it will continue to be enabled. If it was disabled, it will continue to be
disabled.
The state of the lock (either locked or unlocked) is saved in nonvolatile memory so that if
power fails, the same state as existed before the power failure will exist after power is restored.
Initially, the lock is set to the unlocked state.
A remote operator may only enter this command when the remote support modem port is in
the unlocked state. In this situation, the UR command does nothing, so the remote operator
effectively cannot issue this command, but the lAP will not complain if it is typed.
Valid From: Local Console Port, Remote Modem Port
Access Port Special Characters
Table 9-2. Access Port Special Character Summary
Character
Description
BREAK Change Console Master
~B Switch From Console to Control Mode
~y
Special Character Escape
~s XOFF
~Q
XON
Special Characters Description
-e:
Enter Control Mode
Definition:
Entering this character when in console mode causes a change to control mode. Some special
consideration needs to be added for flow control lock ups. Upon entering control mode, the Se
bit should be set and SERR_PORTBUSY should be placed in the IO_STATUS register of
port 0.
Functional Description 9-13