User manual

DEFINITY Enterprise Communications Server Release 6
Maintenance for R6vs/si
555-230-127
Issue 1
August 1997
Maintenance Object Repair Procedures
Page 10-962PI-LINK (Processor Interface Link)
10
5. If link was never brought up:
a. Using
DEFINITY Communications System, Generic 1 and System
75 Administration and Measurement Reports,
555-200-500 and
DEFINITY Enterprise Communications Server Release 5.4
Administrationand Feature Descriptions
, for instructions as needed,
verify that the administration is correct as follows:
— Enter the display ds1 PCSS command. Check the
compatibility of the DS1 parameters with the far-end and the
CSU.
— Enter display communication-interface links command.
— Enter the display communication-interface
processor-channels command. Enter the display
communication-interface hop-channels command (if
hop-channels are being used).
— Enter the display trunk <grp>/<mbr> command (if DS1 is
being used for DCS).
— Enter the status sync command (if DS1 is being used)—
make sure the primary synchronization is administered.
6. If link is an EIA link:
— Verify via the Communication-Interface Links form that the
information for the EIA connection is correct on the local and
remote PBXs.
7. Try to isolate the problem in the link if hardware is at fault. Test the link via
the test link lnk-no long system technician command.
a. If Test #182 fails three times, replace the TN765 circuit pack. Refer
to Chapter 6, ‘‘
Reliability Systems: A Maintenance Aid’’.
b. If Test #182 passes and Test #183 fails, replace the TN754 or
TN784 Digital Line or the TN722 or TN767 DS1 Interface circuit
pack, whichever is used in the link. If Test #183 still fails, replace
the TN765 PI-BD. Refer to Chapter 9, ‘‘
Packet Bus Fault Isolation
and Correction’’.
8. If the preceding tests pass:
Check the physical transmission link:
a. Are all the circuit packs physically installed?
b. Are the cables still connected throughout?
c. Check DS1-BD error section for possible connectivity problems if
DS1-BD is used in link connection.
d. Check CSU options.
9. Finally, restart the Processor Interface circuit pack via reset interface
PCS. This resets the circuit pack and restarts ALL the links on it.