发明名称 |
Virtual pbx call processing method. |
摘要 |
<p>A virtual PBX capability is provided to a group of user packet stations (1005, 1006, 1055, 1056) served by a packet switching system (10). The system establishes a virtual circuit between each distinct pair of stations in the group. The stations exchange signaling packets via the virtual circuits and respond to such packets by coordinating the initiation and disconnection of voice, data, or image calls. All call processing, including the provision of features such as call forwarding and automatic callback, is accomplished by stations without the aid of the switching system. A fraud prevention mechanism is included in the switching system to prevent unauthorized stations from communicating as part of the virtual PBX group.</p> |
申请公布号 |
EP0260043(A2) |
申请公布日期 |
1988.03.16 |
申请号 |
EP19870307642 |
申请日期 |
1987.08.28 |
申请人 |
AMERICAN TELEPHONE AND TELEGRAPH COMPANY |
发明人 |
HUNTER, PAUL DOUGLAS;WILDREVITZ, BENJAMIN CECIL;PARKER, WILLIAM WALTER |
分类号 |
H04Q3/58;H04L12/56;H04L12/64 |
主分类号 |
H04Q3/58 |
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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