FED-STD-1007

Abstract

This standard establishes coding and modulation requirements for duplex 9600 bit/s modems owned or leased by the Federal Government for use over four-wire, analog transmission channels. It is based upon CCITT Recommendation V.29. <br>This standard is to facilitate interoperability between telecommunication facilities and systems of the Federal Government. <br>All Federal departments and agencies shall comply with this standard in the design and procurement of duplex 9600 bit/s modems (and equipment containing such modems) for use over four-wire, nominal 4 kHz analog channels. Typically, nominal 4 kHz analog channels are derived from frequency division multiplex equipment associated with microwave, coaxial cable, and satellite transmission systems. <br>For application of this standard within the Department of Defense, users should refer to the supplemental requirements contained in Military Standard 188-110. <br>Modems described by this standard may also be used on nonmultiplexed transmission systems, such as metallic cable facilities, but are not required for use with such systems.