The Fiber Optics Illustrated Dictionary - Part 29 fills a gap in the literature by providing instructors, hobbyists, and top-level engineers with an accessible, current reference. From the author of the best-selling Telecommunications Illustrated Dictionary, this comprehensive reference includes fundamental physics, basic technical information for fiber splicing, installation, maintenance, and repair, and follow-up information for communications and other professionals using fiber optic components. Well-balanced, well-researched, and extensively cross-referenced, it also includes hundreds of photographs, charts, and diagrams that clarify the more complex ideas and put simpler ideas into their applications context | Fiber Optics Illustrated Dictionary with power conditioners and good quality surge suppressors. DISA 1. Data Interchange Standards Association. 2. Defense Information Systems Agency. 3. Direct Inward System Access. A subscriber option for external access to a private branch exchange PBX usually through a security code. disable 1. v. To prevent from functioning. There are many ways to disable a process or mechanism but the two most common are interrupting the power or the transmission. 2. n. A signal tone or command sent through a circuit to disable a device at the end of the transmission. Telephone companies have the capability of electronically enabling and disabling a number of phone services. Disabilities Rights Office DRO. An office of the Federal Communications Commission FCC that helps to ensure that people with communications-re-lated disabilities are given the same opportunities as others to access and use communications services. http cib dro disaster recovery The procedures and resources for bringing a system back online after a disaster. Disaster recovery applies to everything from repairing or replacing facilities and equipment damaged by floods hurricanes or bombing to recovering data from a hard drive damaged by a lightning strike or a toddler poking paper clips into the circuit board. Data recovery is a fact of life. Whether or not you archive your data your drive will fail at some point or you will inadvertently overwrite an important file. Prevention is usually better but if recovery of data becomes necessary there are many shareware and commercial tools to assist with the task. disc A round flat data storage and retrieval medium. Usually these are write once read many WORM devices since optical media are not as easy to write and rewrite as floppy disks. Although in English disc and disk are used somewhat interchangeably in computer parlance disc tends to be used more often to designate optical storage media such as audio CDs laserdiscs
