Nortel Passport 15000, Hardware Installation And Maintenance, Page: 63 / 874

Chapter 2 Safety considerations and best practices 63
Passport 15000, 20000 Hardware Installation, Maintenance, and Upgrade 5.2S2
• Decide which slot in the cage is to house the spare (redundant) FP for the
other FPs in that cage. To support sparing, optical FPs must be paired (for
example, slot 4 to slot 5, slot 6 to slot 7, etc.).
• For a Passport 20000, consider that slots 6, 7, 14, and 15 can each contain
a 10 Gbit/s FP when the cards become available, or a 2.5 Gbit/s FP now.
Equipment maintenance
See the following sections for an overview of common maintenance tasks:
• “Accessing equipment inside a NEBS 2000 frame with a door” (page 63)
• “Air filter replacement” (page 64)
• “Equipment vacuuming” (page 64)
• “Fiber cable cleaning” (page 65)
• “SFP optical module cleaning” (page 65)
• “Monitoring equipment status LEDs” (page 65)
• “Storing and transporting circuit cards” (page 66)
Accessing equipment inside a NEBS 2000 frame with a door
When a NEBS 2000 frame has a door mounted across its front or rear, the
door could be locked. Whenever you need to access equipment behind a door
(for example, to add, replace, or test equipment), you will need a key from kit
NTQS37. One key fits all doors from any version of the kit NTQS37. The
procedure to control access through a door is “Locking or unlocking a door
on a NEBS 2000 frame” (page 631).