Nortel Passport 15000, Hardware Installation And Maintenance, Page: 857 / 874

Chapter 17 Hardware procedures 857
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
Testing sparing panel connectivity
Test sparing panel connectivity after a hardware replacement to ensure proper
functioning.
Prerequisites
• You must be familiar with “Safety considerations and best practices”
(page 53).
• After replacing a hardware part that is directly connected to a fanout or
sparing panel in a Passport 15000 or 20000 setup, test the transmit and
receive connectivity between the FPs and the panel. Replacing a part
includes any one or more of:
— a DS3 or E3 FP
— the cable or cable assembly connecting the FP port to the sparing
panel port or fanout panel connection
— a connector at either end of the cable connecting an FP port to a
sparing panel port or fanout panel connection
— the sparing panel, fanout panel, or a part of either one
• The one-for-six sparing panel (NTQS31) has the hardware capability for
monitoring the transmit signal on any port on a specific FP. Ports of the
same number cannot be monitored on different FPs at the same time. The
monitoring signal of the panel is 25 dB lower than the transmit signal so
that the transmission is insignificantly affected.
• Testing must be done by your own customer premises test equipment.
Procedure steps
1 Ensure traffic is running through the FPs that are connected to the sparing
panel.
2 On the sparing panel, press the FP selection button until the numeral of
the appropriate FP appears in the LED display beside it. The button is the
upper one of the pair.
3 Press the port selection button until the hexadecimal number of the port
appears in the LED display beside the button. The button is the lower one
of the pair.
a. When replacing an FP, select the first port of all connected ports on
the FP.