Nortel Passport 15000 Hardware Installation And Maintenance page 858

858 Chapter 17 Hardware procedures
241-1501-240 5.2S2
b. When replacing a cable or part of a cable, select only the port
associated with the cable.
c. When replacing (or re-locating) the sparing panel, select the first port
of the first FP that is connected to the sparing panel.
4 Connect the test equipment according to the equipment manufacturer's
instructions.
5 Run the test equipment to verify connectivity according to the equipment
manufacturer's instructions.
6 Record the test result for the FP-to-sparing panel port path.
7 Repeat this procedure until you cycle through all of the ports that are
connected to the part that was replaced.
8 For each port that failed the transmit connectivity test, test the FP, and
check the cable connectors, cable, and cable connections. Re-test each
as you check. If any port still fails the test, contact your equipment
administrator to decide what to replace.