Shutdown - Nortel DMS-100 Manual

Application
Use this procedure to conserve emergency backup power on a Digital Multiplex
System (DMS) SuperNode switch without loss of subscriber service. Perform this
procedure during an extended commercial power outage.
This procedure reduces the loss of power on emergency batteries to a minimum. The
procedure shuts down equipment that you do not require to maintain subscriber
service. The procedure specifies equipment shutdown in ascending order based on
how the shutdown affects system reliability. Equipment shutdown can begin with the
spare printers that are not as necessary. Equipment shutdown can end with the
inactive computing module (CM) plane that is necessary.
The procedure consists of a top-level procedure and a number of subprocedures. The
top-level procedure in this document is Emergency power conservation—shutdown.
This procedure specifies the equipment and the order of the equipment that you
power down without the loss of service. The top-level procedure refers to the
subprocedures that provide instructions to power down separate elements of the
switch. The table of contents lists the subprocedures.
Usage notes
Note the configuration and condition of your switch and the expected duration of the
power outage. Note the quantity of reserve power available during this procedure.
Proceed as follows:
Complete as much of this procedure as necessary. For example, if you anticipate a
restoration of power, you can leave major subsystems that operate in duplex mode.
Major subsystems include the message switch (MS) and the CM. For system
Emergency power conservation Shutdown
DMS-100 Family NA100 Recovery Procedures SN09 (DMS) and up
Emergency power 5-85