Nortel Meridian 1 Succession 1000M Installation And Configuration Manual page 507

DAT command
Use the DAT command to print the data issue and creation date of the main
cabinet or chassis primary and backup databases, as well as those of the
survivable IP expansion cabinets or chassis. The software release of the
survivable IP expansion cabinets or chassis must match that of the main
cabinet or chassis.
The DAT command is available in LD 43.
LOCK and UNLOCK commands
The LOCK and UNLOCK commands are available from the main cabinet or
chassis.
The LOCK command locks an IP expansion cabinet or chassis in the mode
that it is in when the command is invoked. This does not require a restart of
the selected IP expansion cabinet or chassis.
• If the IP expansion cabinet or chassis receives the LOCK command in
normal mode, it goes into normal locked mode.
• If the IP expansion cabinet or chassis receives the LOCK command in
survival mode, it goes into survival locked mode.
• When an IP expansion cabinet or chassis is in normal locked or in
survival locked mode, no switchover (or switchback) is possible
(automatic or manual) until the UNLOCK command is issued.
The UNLOCK command unlocks an IP expansion cabinet or chassis. This
does not require a restart of the selected IP expansion cabinet or chassis.
• If the UNLOCK command is received in normal locked mode, the IP
expansion cabinet or chassis returns to normal mode.
• If the UNLOCK command is received in survival locked mode, the IP
expansion cabinet or chassis returns to survival mode.
• This command has no impact if it is received by an IP expansion cabinet
or chassis that has not been locked into either normal or survival mode.
The LOCK/UNLOCK command can be used in any mode by a technician to
keep an IP expansion cabinet or chassis in the current mode, regardless of the
state of the link to the main cabinet or chassis. For example, a technician can
Survivability
Small System Installation and Configuration
Page 507 of 562