Compaq AlphaServer 1200 User Manual page 145

tt_allow_login
Enables or disables login to the SRM console firmware on alternate console ports. If
the environment variable console is set to serial, the primary console device is the
terminal connected through the COM1 port. The command set tt_allow_login 1
enables logins through either the COM2 port or a graphics monitor.
The syntax is:
set tt_allow_login value
The options for value are:
0 Disables login through the COM2 port or a graphics monitor.
1 (default) Enables login through the COM2 port or a graphics monitor.
SRM Console 4-59