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 pac k (Expansion Interface or SNI) using the
busyout board UUCSS command.
2. Disconnect the transmit and receive fiber pair from the lig htwave
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-connecti on at the end of this proced ure. The
fiber connected to the transmit side of the lightwave
transceiver on one circuit p ack should be c onnected to the
receive side of the lightwave trans ceiver on the circuit pac k
on the opposite end of the fi ber.
3. Using a spare fiber jump er cable, interconnec t the transmit and
receive jacks of the lightwav e transceiver as shown in Figure 9-87.
NOTE:
Make sure that the total length of the fiber jump er cable does
not exceed the maximum leng th recommended for the fib er
link connections between cabinets. This is necessary so that
the testing of the Expansion Interface or SNI circ uit pack is
done within connectivi ty guidelines so that test results are not
influenced due to the c able length not meeting requirements.
4. Go to the front of the cabinet and insp ect the yellow LED.
■If the yellow LED flashes on at a rate of once per second, the
(Expansion Interface or Switch Node In terface) circuit pac k
or transceiver should b e replaced.
■If the yellow LED flashes on at a rate of five times per
second, the circ uit pack (Expansion Interface or Switch
Node Interface) or the lig htwave transceiver may need
replacement. This condition may also be due to a faulty
system clock on the network c ontaining the Expansion
Interface circuit p ack or in the switch node c arrier containing
the SNI.
■If the yellow LED was blinking before starting this procedure
and the yellow LED is not blinking now, this c ircuit pack
(Expansion Interface or Switch Node In terface) and the
lightwave transceiver are functi oning properly.
5. Replace faulty component (s) and reconnect the orig inal fiber. Be
sure to reconnect the fibers p roperly as noted in Step 2.
6. Release Expansion Interface circuit p ack or Switch Node Interfac e
circuit pack with the release board UUCSS command.