发明名称 Conferencing bridge
摘要 A conferencing bridge is provided for an electronic telephone system to support telephone conversations involving three or more parties. The conferencing bridge implements a conferencing algorithm using simple arithmetic operations. The conferencing bridge circuitry implements the algorithm by summing each party's contribution to the conference deriving a grand total, and subtracting each party's contribution from the grand total.
申请公布号 US4797876(A) 申请公布日期 1989.01.10
申请号 US19870072254 申请日期 1987.07.10
申请人 SOLID STATE SYSTEMS, INC. 发明人 RATCLIFF, REGINALD
分类号 H04M3/56;(IPC1-7):H04J3/02 主分类号 H04M3/56
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