发明名称 |
System and method for providing telephone service having private branch exchange features in a voice-over-data network telephony system |
摘要 |
A system and method for providing telephone service to a user of a telecommunications device using a data network service provider. The data network service provider has a local service host that is accessible by a local access identifier. A caller uses a telecommunications device to dial the local access identifier to connect to the local service host. In response to a prompt, the caller dials a telephone extension that identifies the callee's telecommunications device. The local service host receives the telephone extension and verifies that the callee is a subscriber. The local service host then retrieves the gateway nearest the callee telecommunications device and opens a voice-over-data channel between the callee and caller gateways. The telephone conversation then proceeds between the callee and caller telecommunications devices over a public switched telephone network connection to the caller gateway, the voice-over-data channel and the PSTN connection to the callee telecommunications device.
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申请公布号 |
US6804224(B1) |
申请公布日期 |
2004.10.12 |
申请号 |
US20000515365 |
申请日期 |
2000.02.29 |
申请人 |
3COM CORPORATION |
发明人 |
SCHUSTER GUIDO M.;SIDHU IKHLAQ S.;MAHLER JERRY J.;DEAN FREDERICK D.;GRABIEC JACEK A. |
分类号 |
H04M7/00;(IPC1-7):H04L12/66 |
主分类号 |
H04M7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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