AT&T 555-230-894 manual Test the System, Check the System Status for Each Cabinet

Test the System 8

The following tests provide verification of the Time Division Multiplexing (TDM) cables and terminators, and fibre-optic inter-cabinet cables (ICC). If a FAIL Result code is seen or other problems are indicated, check these cables. If problems persist, refer to the U.S. English book, DEFINITY Communications System Generic 1 and Generic 3i Maintenance, 555-104-205.

The status of the system should be reviewed first, followed by testing the tone-clock, Time Division Multiplexing (TDM) bus, and duplication link in the Processor Port Network (PPN). Then test expansion interfaces, tone-clock(s), Time Division Multiplexing (TDM) buses, and duplication in the Expansion Port Networks (EPNs).

NOTE:

Circuit pack positions are usually given by cabinet, carrier (within cabinet), and slot (within carrier). They may also be given by port (within slot). The term “cabinet” refers to a stack of single carrier cabinets making up one port network. A port network is defined as a group of cabinets connected together with one Time Division Multiplexing (TDM) bus.

Check the System Status for Each

Cabinet

The system status may suggest problem areas. Specific tests later provide more specific diagnostic information.

1.Verify the terminal screen displays: command:

2.Type status system all-cabinets and press ENTER.

Issue 1 September 1995 8-1