DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123 Issue 1
April 1997
Packet Bus Fault Isolation and Correction
Page9-15The Maintenance/Test Circuit Pack (TN771D)
9
Using Standalone Mode in Packet Bus Fault Isolation and Correction
When the TN771 is in standalone mode, three commands can be used at the
terminal:
■ ds displays the current state of the Packet Bus leads.
■dsa toggles auto-report mode on and off. In auto-report mode, the state of
the Packet Bus leads are displayed and the terminal beeps whenever a
change occurs.
■? displays the available commands.
Figure 9-2 presents an example of a standalone mode display. In the display, an
‘S’ indicates a shorted lead, an ‘O’ indicates an open lead, and a blank indicates
no fault.
Figure 9-2. Example Standalone Mode Display
The information within a standalone mode display is used in the P acket Bus Fault
Correction procedures that follow. The TN771 display indicates the specific
leads on the backplane to examine for bent or dama ged pins. Figure 9-3 shows
the location of the packet bus leads on the backplane as viewed from the front of
the carrier, while Figure 9-4 shows the same slot as viewed from the back of the
carrier.
NOTE:
This information is available only from the standalone mode and with a n
on-site connected terminal. This information is not available from the
Manager I, and, thus, it is not available remotely. This is not a concern,
inasmuch as this information cannot be used effectively if testing is not on
site.
L L L L L L L L L L H H H H H H H H H H S S S L
P 0 1 2 3 4 5 6 7 8 P 0 1 2 3 4 5 6 7 8 S F B F
_ ____________________________________________________________________________________________________
S S O
Command: