tions infrastructure. While the standard doesn't specify how the drawings are created, in most cases they will be pre- pared using a computer-aided design (CAD) system, either a separate software product or a telecommunications administra- tion system that incorporates CAD functionality. The record drawings must show the following: the identifier as well as the location and size of pathways and spaces; the loca- tion of all cable terminations (work areas, telecommunication closets and equipment rooms); and all backbone cables. Draw- ings which show the routing of all horizontal cables are desirable. The standard includes symbols that may be used when preparing these drawings. Ideally, record information should be accessible when one is viewing the record drawings. It is mandated that all wiring, termination and splice work orders be maintained for telecommunication repairs, adds, moves and changes. The work-order document must include cable iden- tifiers and types, termination identifiers and types, and splice identifiers and types. The work-order process should be used to update the administrative records. In day-to-day telecommuni- cations administration, this is the most important requirement set forth in the standard. If the system records are not immedi- ately updated when a work order is completed, the administrative system will quickly become outdated and useless. Configuration management is identified by the International Organization for Standardization's Network Management Forum as one of the five functional network management areas, the others being fault, security, performance and accounting management. Configuration management is the core of the four other network management areas and comprises the following management 268 99 The Telecom Handbook CHAPTER 12 elements: in-use and spare-part equipment inventory management; cabling and wiring management; circuit management; tracking, authorizing and scheduling adds, moves and changes; trouble ticketing network faults; user and vendor management; and docu