ITU-T R.4 FRENCH-1988
METHODS FOR THE SEPARATE MEASUREMENTS OF THE DEGREES OF VARIOUS TYPES OF TELEGRAPH DISTORTION

Standard No.

ITU-T R.4 FRENCH-1988

Release Date

1988

Published By

International Telecommunication Union (ITU)

Status

Withdraw

Latest

ITU-T R.4 FRENCH-1988

Scope

For separate measurements of the degrees of characteristic distortion, bias distortion and fortuitous distortion affecting a telegraph modulation or restitution, the following is recommended where circuits and voice-frequency telegraph (VFT) channels are used to carry information employing International Telegraph Alphabet No.2, without regeneration.

ITU-T R.4 FRENCH-1988 history

• 1988 ITU-T R.4 FRENCH-1988 METHODS FOR THE SEPARATE MEASUREMENTS OF THE DEGREES OF VARIOUS TYPES OF TELEGRAPH DISTORTION