DEFINITY Enterprise Communications Server Release 7
Maintenance for R7r
555-230-126
Issue 4
June 1999
Maintenance Object Repair Procedures
9-1435SNI-BD (SNI Circuit Pack)
9
1. Busyout the circuit pack (Expansion Interface or SNI) using the
busyout board UUCSS
command.
2. Disconnect the transmit and receive fiber pair from the lightwave
transceiver on the back of the circuit pack (Expansion Interface or
Switch Node Interface) slot.
NOTE:
Note which is the transmit fiber and which is the receive fiber
for proper re-connection at the end of this procedure. The
fiber connected to the transmit side of the lightwave
transceiver on one circuit pack should be connected to the
receive side of the lightwave transceiver on the circuit pack
on the opposite end of the fiber.
3. Using a spare fiber jumper cable, interconnect the transmit and
receive jacks of the lightwave transceiver as shown in Figure 9-87
.
NOTE:
Make sure that the total length of the fiber jumper cable does
not exceed the maximum length recommended for the fiber
link connections between cabinets. This is necessary so that
the testing of the Expansion Interface or SNI circuit pack is
done within connectivity guidelines so that test results are not
influenced due to the cable length not meeting requirements.
4. Go to the front of the cabinet and inspect the yellow LED.
■ If the yellow LED flashes on at a rate of once per second, the
(Expansion Interface or Switch Node Interface) circuit pack
or transceiver should be replaced.
■ If the yellow LED flashes on at a rate of five times per
second, the circuit pack (Expansion Interface or Switch
Node Interface) or the lightwave transceiver may need
replacement. This condition may also be due to a faulty
system clock on the network containing the Expansion
Interface circuit pack or in the switch node carrier containing
the SNI.
■ If the yellow LED was blinking before starting this procedure
and the yellow LED is not blinking now, this circuit pack
(Expansion Interface or Switch Node Interface) and the
lightwave transceiver are functioning properly.
5. Replace faulty component(s) and reconnect the original fiber. Be
sure to reconnect the fibers properly as noted in Step 2.
6. Release Expansion Interface circuit pack or Switch Node Interface
circuit pack with the release board UUCSS command.
