TIA/EIA-920 is a telecommunications standard from the US Telecommunications Industry Association, a 1988 offshoot of the EIA. The standard establishes wideband audio performance requirements for wireline telephones which transmit their signals digitally. Audio wideband is defined as 150 Hz to 6800 Hz.
TIA/EIA-920 is a US telecommunications standard from the Telecommunications Industry Association, which emerged in 1988 from the EIA. This standard outlines the technical specifications for digital wireline telephones, particularly regarding their audio quality, with a frequency range of 150 Hz to 6800 Hz.