Avaya Definity SI, Руководство по обслуживанию, Страница: 766 / 2968

Packet Bus Fault Isolation and Correction
555-233-123 9-14 Issue 4 May 2002
If there is no TN771 in the Port Network, use the following steps to enter the
standalone mode:
1. Attach the 258A Six-Port Male Amphenol Adapter to the Amphenol
connector for the slot into which the TN771 is to be inserted. Connect one
end of a D8W 8-wire modular cable to port 1 of the 258A. Connect the
other end of the cable to a 355A EIA-232 Adapter. Plug the EIA-232
Adapter into the terminal to be used, and turn the terminal on.
2. Insert the TN771 circuit pack into the slot. The system does not recognize
the presence of the circuit pack.
If the standalone mode is entered successfully, the following is displayed on the
connected terminal:
Figure 9-1. Normal Standalone Mode Display
!
CAUTION:
If the display in Figure 9-1 does not appear, be sure to check the wiring
between the terminal and the TN771, and also the terminal parameters. If
these are correct, the TN771 may be defective. In such a case, follow the
procedures to exit standalone mode (described in the next paragraph). Then
test the Maintenance/Test circuit pack.
NOTE:
If the TN771 fails while in standalone mode, the message
TN771 circuit
pack failed
is displayed, and no further input is accepted on the terminal.
The circuit pack must be replaced.
TN771 STANDALONE MODE
(Type "?" at the prompt for help)
Command: