TIA-492AAAC-B:2009

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.

Applications include, but are not restricted to, the following:
support for short reach, high bit-rate systems in 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.