Nortel ISDN Signaling Link, Description, Installation And Operation

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553-3001-202 Standard 1.00 April 2000
Card LAN
The ITG card supports the backplane Card LAN interface for the purposes of
communicating self-test errors and allowing maintenance access including
resetting the card remotely.
BIOS self-test
The ITG card contains its own VxWorks-based BIOS. At power-up, the BIOS
performs its own initial test of the hardware. These tests cover the processor,
PCI chipset, cache (if installed), and DRAM memory. The results of the BIOS
self-test are displayed on the RS-232 maintenance port.
Base code self-test
The ITG card base code performs the following tests:
• flash integrity test
• PGA read/write test
• PCMCIA controller test (also tests the PCI bus)
• Timer and DMA tests
• DSP test
Field-Programmable Gate Array (FPGA) testing
Before communication with the Meridian 1, the 8051XA controller
downloads FPGA data files and performs tests to check correct programming
of the FPGA.
Upgrades
Several different types of upgrades are required for the Meridian 1 IP
Gateway application. (For example, a software upgrade for bug fix and / or
the addition of new features). All upgrades are accomplished by updating the
on-board application flash memory with the application. Software upgrades
are performed from the MAT PC. It is recommended that you load the
application from the network, rather than the faceplate PC card.