Patent ID: 9363364
Filing Date: 2016-06-07
CPC Classification: H04M

Claim Text:
1. Telephone receiver intended to be connected to a telephone network via a local analogue line and comprising correction means for correcting a degradation of a telephone signal caused by the length of the local analogue line, wherein the telephone receiver further comprises: means for storing first information on the length of the local analogue line between the telephone receiver and the telephone network; means for storing second information on the length of a distant analogue line connecting a distant second telephone receiver and the telephone network; means for selecting an operating mode from at least one of the following modes: a first correction mode in which no correction of the degradation of the telephone signal caused by the length of the local and distant analogue lines is made; a second correction mode in which only a correction of the degradation of the telephone signal caused by the length of the local analogue line is made; a third correction mode in which only a correction of the degradation of the telephone signal caused by the length of the distant analogue line is made; a fourth correction mode in which a correction of the degradation of the telephone signal caused by the length of the local and distant analogue lines is made; the correction means comprising a digital equalizer programmed by a continuous gain function or analog filters for applying gain steps according to the stored first and second length information and the frequency of the telephone signal, said correction means being used during a call between the telephone receiver and the distant second telephone receiver.