GB/T 5437-1985
ActiveDocument facsimile (group 3) transmission requirement
话路传真 (三类机) 传输要求
Application Summary AI generated
This standard specifies the transmission requirements for Group 3 document facsimile machines operating over telephone voice channels. It defines technical parameters such as modulation, data signaling rates, and error handling to ensure interoperability and reliable image transmission in public switched telephone networks. The standard is applied in the design, testing, and procurement of fax equipment used in telecommunications and office environments.
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