Digital cordless telephone with speakerphone in a remote...

Details Digital cordless telephone with speakerphone in a remote... Digital cordless telephone with speakerphone in a remote...

H - Electricity

04

M

H04M 1/725 (2006.01) H04M 1/60 (2006.01)

Patent

CA 2331156

A digital cordless telephone combines speakerphone control information together with voice data information in each of a plurality of data packets transmitted between the remote handset and the base unit while the remote handset is operating in a speakerphone mode. To allow half-duplex speakerphone functionality in the digital remote handset, the speakerphone control information includes break-in information relating to a break in by the user of the remote handset into an ongoing conversation. To allow full-duplex, echo cancellation mode operation of the speakerphone functionality at the digital remote handset, the speakerphone control information includes coordinating information relating to an amount of echo cancellation performed by the base unit and by the remote handset. In the disclosed embodiment, the speakerphone control information further includes switching and signal level information.

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