Nortel Communication Server 1000S Installation And Configuration Manual page 194

Page 194 of 394
553-3001-201 Standard 2.00
Clock Controller description and installation
hardware inventory are also included.
System Initialization
During system initialization, the system software will verify if the clock
controllers equipped in the system are the downloadable clock controllers
(NTRB53) or not. If the clock controllers are identified as the downloadable
clock controller cards, then both downloadable clock controller cards will be
checked for the software version number they are running with. This is
compared with the version number of the PSDL file stored in the system
software database.
If there is a mismatch between the two version numbers and the system
database has the higher version number, the card will be put in the PSDL
downloading tree. Once the entry is added in the PSDL tree, the preprocess
step is done. The next step is for the system to initiate the downloading in the
background, using the PSDL tree. As soon as the download complete
message is received from the card, the CPU sends a message to reset the clock
controller card so that it boots with the new software. Once a self-test is
complete the core sends an enable base message to enable the card.
Maintenance Overlays
Downloading can be initiated from LD 60 for the inactive clock controller
card as part of the enabling sequence of the card. A download can be forced
by specifying the optional parameter FDL (Force Download) when enabling
the card. At the prompt, enter:
ENL CC x FDL
If the optional parameter is not specified, then downloading is conditional.
This means that the version number of the loadware on the clock controller
card will be checked against the version number stored on the system disk. If
a mismatch is found and the version number in the system software database
is higher, then downloading will be initiated for that card. The entry for the
card is not added to the PSDL tree at this time. Instead, downloading is
September 2004
Enable Clock in side x with the force download option