H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 1/725 (2006.01) H04Q 7/38 (2006.01) H04Q 7/26 (2006.01)
Patent
CA 2453795
A cordless telephone system comprising a base unit, at least one handset, and one or more expansion units is provided. The handset and the expansion units communicate with the base unit via communication channels implemented in a wireless communication protocol. The expansion units can provide the system with communication interfaces to various external networks, such as an additional analog telephone line, a digital telephone line, or a cellular telephone. Conference calling functionality is provided between handsets and expansion base units within the primary base unit. Data services can also be provided by a wireless expansion base unit.
Charney Douglas
Ryley Gordon
Dimock Stratton Llp
Vtech Telecommunications Limited
LandOfFree
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