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5
Central Office Problems
5-1. Installing the Control Unit
and Later)
5-2. Installing the Control Unit
and Later)
Top Cover (Release 2.1
5-30
Front Cover (Release 2.1
5-31
5-3. Assembling the Control Unit Housing (Release 2.0
and Earlier)
5-33
5-3.
Installing the Control Unit Housing (Release 2.0
and Earlier)
B
System Numbering
B-1. Form 2a, System
B-2. Form 2b, System
B-3 Form 2c, System
B-4 Form 2d, System
Forms
Numbering:
Numbering:
Numbering:
Numbering:
5-34
Extension Jacks
B-2
Digital Adjuncts
B-4
Line/Trunk Jacks
B-5
Special Renumbers
B-6
D
Backing Up with a Memory CardChapter Name
D-1. PCMCIA Memory Card
D-2. Inserting the Memory Card
D-3
D-4
E
Modifying a Release 2.1 or Earlier Processor
for Key Mode
E-1. Modifying the Processor for Key Mode
E-2. Installing the Control Unit Housing
E-2
E-5
viii Maintenance and Troubleshooting