3Com manual Menu Option 2 Checking the T1/PRI’s overall status

Dual T1/PRI Status Displays 4-3

■Line Interface Unit 1/2

The power-up code verifies whether or not the NIC is present and then configures the CSU on the NIC to local loopback mode. The failure level for this test is Non-critical.

■Flash ROM 12v Test

This self-test checks and verifies that the 12v circuitry to the Flash

ROM functions properly. The failure level for this test is Non-critical.

■HDLC Channel 1/2

The code checks the HDLC controller channels 1 and 2. The HDL controller is used for D-channel signaling. The failure level for this test is Non-Critical.

Menu Option 2 Checking the T1/PRI’s overall status

This status screen provides status information for:

■Current PRI timing source

■Current packet bus timing source

■What type of NIC is installed behind the NAC

■What chassis slot the NAC is installed in

■How much time elapsed since the NAC was last reset

■How much DRAM is installed on the NAC

■How much Flash ROM is installed on the NAC

Menu Option 3 Checking chassis slot device configurations

Status menu option 3 allows you to verify if you configured the chassis slot assignments correctly in option 5 of the card configuration menu.

The slot # column represents the chassis slot numbers, 1–16.

The device type column indicates the type of NAC installed and assigned in the corresponding chassis slot. It displays one of these:

■NONE

No NAC is installed and assigned to that particular slot.