•
"Testing ports and interfaces". See NN10600-520 Nortel Networks
Multiservice Switch 7400/15000/20000 Fault and Performance
Management: Troubleshooting.
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"Unpacking a Multiservice Switch 7420" (page 527)
Multiservice Switch 7400 Hardware Installation, Maintenance, and Upgrade 6.1S2
Chapter 2 Multiservice Switch 7420 replacement 43