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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0572444 (1995-12-14) |
| 우선권정보 | IL-0115967 (1995-11-12) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 372 인용 특허 : 0 |
A network based distributed private branch exchange (PBX) system is described. Telephony clients communicate using regular telephone sets connected to telephony client modules installed in a host computer. Central office (CO) telephone lines terminate on telephony server modules installed in another
A network based distributed private branch exchange (PBX) system is described. Telephony clients communicate using regular telephone sets connected to telephony client modules installed in a host computer. Central office (CO) telephone lines terminate on telephony server modules installed in another host computer. A telephony server provides call switching functionality to the system. To transfer voice over the network, analog voice data is first digitized, packetized and then placed onto the network by the host computer. At the destination host computer, the packets are depacketized and converted back to analog voice. Packets generated from digitized voice data are no treated no differently on the network then regular non-voice traffic and are not given any special priority over non-voice traffic. The system includes client related features typically found in conventional PBX equipment such as call forwarding, conferencing, transfer, park, etc., in addition to server related features such administration, interactive voice response, voice mail, automatic call distribution, billing, etc. A remote subscriber interface module connects telephone sets that lack a host computer, to the network.
[ What is claimed is:] [1.] A personal computer based private branch exchange system distributed across a packet based network, comprising:a plurality of telephony clients coupled to said network, each telephone client coupled to said network via a network interface card and adapted to interface to
[ What is claimed is:] [1.] A personal computer based private branch exchange system distributed across a packet based network, comprising:a plurality of telephony clients coupled to said network, each telephone client coupled to said network via a network interface card and adapted to interface to a standard analog telephone set;at least one telephony server coupled to said network, said telephony server for providing centralized call switching capabilities to said plurality telephony clients, communications within said system realized through the transfer of packets over said network wherein said packets contain voice data, said packets containing voice data originating within said system having a priority equal to packets containing non-voice data on said network, said at least one telephony server operative to provide call setup, status monitoring and tear down functions for calls placed by said plurality of telephony clients; anda system administrator coupled to said network said system administrator for providing management and administration capabilities to said system.
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