26.4 Removingan XSCFBB ControlCable 407
26.5 Installingan XSCFBB ControlCable 409
26.6 Restoringthe System 410
26.6.1 Active/Hotmaintenance 410
26.6.2 Active/Coldmaintenance 410
26.6.3 Inactive/Hotmaintenance 411
26.6.4 Inactive/Coldmaintenance 411
26.6.5 System-stopped maintenance 411
Chapter27 Maintainingthe XSCF DUAL Control Cables 413
27.1 Configurationof theXSCF DUALControlPorts 413
27.2 BeforeMaintaining anXSCF DUAL ControlCable 415
27.2.1 Types ofmaintenance 415
27.2.2 Maintenanceflow 415
27.3 Enablingthe Removalof anXSCF DUAL ControlCable 416
27.3.1 Active/Hotmaintenance 416
27.3.2 Active/Coldmaintenance 417
27.3.3 Inactive/Hotmaintenance 417
27.3.4 Inactive/Coldmaintenance 418
27.3.5 System-stopped maintenance 418
27.4 Removingan XSCFDUALControl Cable 419
27.5 Installingan XSCFDUAL ControlCable 421
27.6 Restoringthe System 421
27.6.1 Active/Hotmaintenance 421
27.6.2 Active/Coldmaintenance 422
27.6.3 Inactive/Hotmaintenance 422
27.6.4 Inactive/Coldmaintenance 423
27.6.5 System-stopped maintenance 423
Chapter 28 Maintainingthe Cable Kit of the Crossbar Box 425
28.1 Configurationof theCable Kit 425
28.1.1 Cablesfor theconnection betweenthe crossbarbackplane unit
andterminal board 425
Contents xvii