Commercial building telecommunications cabling standard - Part 1: General requirements - Addendum 4 - Recognition of category 6 and 850 nm laser-optimized 50/125 Um multimode optical fiber cabling First Edition; ANSI/TIA-568-B.1-4-2003
This Standard specifies the requirements for air conduction pure tone audiometers used in
determining the hearing threshold level of an individual in comparison with the standard
reference threshold levels. These audiometers may be manual, automatic rec