Nortel Passport 7400, Установка оборудования, техническое обслуживание и устранение неисправностей, Страница: 381 / 438

Chapter 37 Hardware procedures 381
Passport 7400 Hardware Installation, Maintenance, and Upgrade 5.2S1
Removing CP cables for BITS
Remove control processor cables for BITS to replace a faulty cable or before
removing the CP-with-BITS from the shelf.
Prerequisites
• Removing a BITS cable from the active CP will cause both external
timing sources to be lost, and the provisioned tertiaryReference will
become the active timing reference. Before removing a BITS cable from
an active CP lock the external timing ports. See “Locking external timing
ports” in 241-5701-600 Passport 7400, 15000, 20000 Configuration
Guide
• Removing a BITS cable from the inactive CP will have no impact on the
external timing signal being received by the active CP.
Procedure steps
1 On the faceplate of the CP, locate the BITS cable to be removed. Refer to
the figure “Control processor with BITS faceplate” (page 267).
2 Disconnect the cable from the CP faceplate and from the BITS
termination panel.