Avaya Definity SI Maintenance Manual page 764

Packet Bus Fault Isolation and Correction
The list configuration command is used to check for the presence of a circuit
pack in the system. If a circuit pack is not present in the system, one must be
taken to the customer site. The
section in this chapter discusses the special cases when a spare TN771 must be
taken to the customer site.
NOTE:
When in standalone mode, the yellow LED on the TN771 blinks if there is a
Packet Bus fault. If there is no such fault, the yellow LED is off. This is true
because Packet Bus reconfiguration cannot occur in standalone mode.
Required Hardware for Standalone Mode
In addition to the TN771, the following equipment is required to use the
standalone mode:
1. Terminal or PC with terminal-emulation software. The EIA-232 (RS-232)
port should be configured at 1200 baud, no parity, 8 data bits, and one stop
bit. This is not the same configuration as for the Manager I terminal.
Therefore, if the Manager I can be used for this operation (and this
depends on the switch configuration and on customer requirements),
remember to restore the original communication parameters before
returning the Manager I to service.
2. 355A EIA-232 Adapter (COMCODE 105 012 637).
3. 258B Six-Port Male Amphenol Adapter (COMCODE 103 923 025).
4. D8W 8-wire modular cable of an appropriate length to connect the 258A on
the back of the cabinet to the 355A adapter. The relevant COMCODE is
determined by the length of the cable, as follows:
Slot Selection for Standalone Mode
When selecting a carrier slot to use for standalone mode in a port network that
does not already contain a TN771, keep the following points in mind:
A port circuit slot (indicated by a purple label) should be used.
-5 volt power supply must be available in the carrier. This section describes
the power supply configurations that provide this power supply.
It is preferable that the slot chosen is in the A carrier if a free slot that
matches the criteria presented in the first two items of information in this list
is available.
9-12 Issue 4 May 2002
''Special Precaution Concerning the TN771''
103 786 786 (7 feet)
103 786 802 (14 feet)
103 786 828 (25 feet)
103 866 109 (50 feet)
555-233-123