MIL-T-15514
MIL-T-15514, MILITARY SPECIFICATION: TELEPHONE EQUIPMENT, SOUND POWERED TELEPHONE HANDSET, HEADSET, AND HEADSET-NOISE ATTENUATING, GENERAL SPECIFICATION FOR (08 SEP 1993)., This specification covers sound powered telephone handsets, headsets, and headset-noise attenuating for Naval shipboard and shore use.
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