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Menu Option 1 Checking power-up self test status
Upon
■RAM
This test fills the SRAM of the NAC with a pattern sequence, and then performs a comparison check. The failure level for this test is Critical.
■Flash ROM
This test performs a CRC check on the Flash ROM. The failure level for this test is Critical.
■
This is a
■Watch Dog
This test verifies the
■Management Bus UART
This is a simple loopback test to verify that the UART that communicates with the management bus functions properly. The failure level for this test is
■User Interface UART
This is a simple loopback test to verify that the UART that communicates with the UI port functions properly. The failure level for this test is
■Time/Space Switch
The NAC’s software runs two
■Framer 1/2
The T1/PRI software performs various diagnostic exercises to test the framer chips. The failure level for this test is