Avaya S8700 Maintenance Manual page 348

Maintenance Object Repair Procedure
START (DS1 Interface refers to the TN722, TN767 or TN464 circuit pack.)
Since this technique is time-consuming, first fix any DS1-BD,
UDS1-BD, STRAT-3 or SYNC errors that are not slip errors.
Enter busyout board
for the DS1 Interface.
This circuit pack should
not be the on-line
synchronization reference.
Loop transmit to receive on the
G3r side of the equipment
connected to the DS1 Interface.
(See Note 1).
Execute the Slip Alarm
Inquiry Test (#144) via
test board command.
(See Note 2).
FAIL
The fault lies before the
loop-around point. Repair
or replace the defective
wiring or circuit pack.
If the problem cannot be
identified, escalate the
problem.
Figure 8-46. Facility Fault Sectionalization
8-1044 Issue 1 May 2002
PASS
The fault lies beyond the
loop-around point. Remove
the loop-around and rewire
the connections. Is the
unit just tested the last unit
on the G3r side of the
maintenance boundary?
Move the loop-around point
to the next unit toward the
span line side. Loop transmit
to receive on the G3r side of
the next piece of equipment.
YES
NO
Restore service:
enter release
board for the
DS1 Interface.
Report to the
appropriate
personnel that
the problem is
beyond the
maintenance
boundary.
555-233-142