Digital conference

Details Digital conference Digital conference

H - Electricity

04

M

344/14

H04M 3/56 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 1120144

ABSTRACT OF THE DISCLOSURE A digital conference circuit provides greater stability in voice transmission by selectively inverting the signal in alternate con- ference channels, thereby providing cancellation of parasitic echo signals which tend to create oscillations or ringing. Selective gain control is also provided for conferences of different sizes and efficient use of conference lines is ensured by providing for selective combination of conference groups.

316947

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