Card Enabling Or Application Enabling; Card Reset; Background Audit - Meridian Nortel 1 Option 11C Technical Reference Manual

Page 524 of 544

Card enabling or application enabling

Card reset

Background audit

553-3011-100 Standard 14.00
NTBK51 Downloadable D-channel handler
If a normal download enable command is executed, the MSDL base code and
application will be conditionally downloaded to the DDCH card. This
conditional download will depend on the result of the check made by the
Option 11C CPU on the MSDL base code and application software.
If a forced download enable command is executed in maintenance LD 96, the
MSDL base code and application are forced down to the DDCH card, even if
the base and application software is already resident on the DDCH card. In
order to complete a forced download, the following conditions must be met:
• The DDCH card must be enabled
• The D-channel port must be disabled
Following a card reset, the MSDL base code and the D-channel application
software will be validated by the Option 11C CPU. Because software is stored
in flash EPROM on the DDCH card it does not have to be downloaded.
However, if the software is missing (due to new installation, corruption
loadware version mismatch), the CPU will automatically download the base/
application into the DDCH card.
If during background audit of the card and associated applications it is found
that downloading is required, the card is queued in the PSDL tree.
Downloading is performed in background mode based on the entries in the
PSDL tree.
January 2002