Entering Xbert - Nortel DMS-100 Series Maintenance Manual

The isolate command automatically runs tests to isolate a fault to a specified
set of cards. The number of cards in the card list of the cards varies from one
to three. The separate test results determine the number of cards in the list.
One manual request can test the P-side ports of the XPM or the OPM bus
interface cards (BIC) in order.
Test XBERTDCC (digroup control cards)
To test the digroup control cards (DCC), the XPMDCC test path travels
through the following cards:
• Message card (NT6X69)
• Timeswitch card (NT6X44)
• DS-1 interface card (NT6X50)
• DCC (NT6X52)
• Link control card (LCC) (NT6X73)
The XBERTDCC attempts to establish a looparound of a manually specified
P-side port at the OPM DCC to set up a test path. If the attempt is not
successful, a response appears. The system aborts the test. If the whole OPM
looparound is allocated, the system runs the test.
Test XBERTBIC (bus interface cards)
To test BICs, the XBERTBIC test path travels through the following cards:
• Message card (NT6X69)
• Timeswitch card (NT6X44)
• DS-1 interface card (NT6X50)
• LCC (NT6X73)
• DCC (NT6X52)
• BIC (NT6X54)
The XBERTBIC attempts to establish a looparound of the manually specified
P-side port at an OPM BIC to set up the test path. With BIC, the user must
manually specify the test loop to terminate. If the attempt is not successful, a
response appears. The system aborts the test. If the whole NT6X54
looparound is allocated, the system runs the test.

Entering XBERT

The user can enter the XBERT level at any level of the MAP terminal. The
user enters one of the following commands:
• XBERT <<PM>> <<PM#>>
• XBERT N <<node#>>
Trouble isolation and correction 10-7
DMS-100 Family OPM Maintenance Manual XPM14 and up