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US07693137B2 Multi-line appearance telephony via a computer network 失效
通过计算机网络进行多线显示电话

Multi-line appearance telephony via a computer network
Abstract:
A method and apparatus are provided for creating traditional multi-line appearance telecommunications capabilities in a computer network for communications received from a switched circuit network. The system and method create key system and attendant/attendee relationships between the respective terminal end-points of the computer network. In addition, multiple line appearances may be supported simultaneously at a single terminal end-point.
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