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 telecommunications standard from the US Telecommunications Industry Association, which split off from the EIA in 1988. The standard sets technical requirements for digital wireline telephones, focusing on their audio capabilities within a specific frequency range of 150 Hz to 6800 Hz.