TIA ANSI/TIA-492AAAB-A

This Detail Specification applies to class Ia, graded-index, 50/125 μm multimode optical fiber used as a component in the manufacture of fiber-optic cable used in buildings.

Applications include, but are not restricted to, the following: telephony, distribution and local networks, carrying data, voice and/or video services and on-premises intrabuilding and interbuilding fiber installations, including LANs, PBXs, video, various multiplexing uses, outside telephone cable plant use, and miscellaneous related uses.