AT&T 3.0 manual Figure B-1

System Numbering Forms

B

When you change any existing trunk or extension wiring, record information about the wiring on the appropriate system numbering form. This appendix includes examples of all of the system numbering forms, and instructions for completing Form 2a, “System Numbering: Extension Jacks. ” The system numbering forms, which are included in this appendix, are as follows:

■ Form 2a, System Numbering: Extension Jacks	(Figure B-1 )
■ Form 2b, System Numbering: Digital Adjuncts	(Figure B-2)
■ Form 2c, System Numbering: Line/Trunk Jacks	(Figure B-3)

■Form 2d, System Numbering: Special Renumbers (Figure B-4)

See System Planning for completed forms which contain more detailed information regarding the configuration of your customer’s system.

Maintenance and Troubleshooting B–1