Invention Grant
US08126009B2 Method and apparatus for providing ringing timeout disconnect supervision in remote telephone extensions using voice over packet-data-network systems (VOPS)
有权
用于通过分组数据网络系统（VOPS）上的语音在远程电话分机中提供振铃超时断开监视的方法和装置
- Patent Title: Method and apparatus for providing ringing timeout disconnect supervision in remote telephone extensions using voice over packet-data-network systems (VOPS)
- Patent Title (中): 用于通过分组数据网络系统（VOPS）上的语音在远程电话分机中提供振铃超时断开监视的方法和装置
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Application No.: US12002922Application Date: 2007-12-18
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Publication No.: US08126009B2Publication Date: 2012-02-28
- Inventor: Wing-Kuen Chung , Cherng-Daw Hwang , Michael Tasker
- Applicant: Wing-Kuen Chung , Cherng-Daw Hwang , Michael Tasker
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Schwegman, Lundberg & Woessner, P.A.
- Main IPC: H04J3/16
- IPC: H04J3/16
Abstract:
A Multiservice Access Concentrator (MAC) provides a time limit for a first ringing voltage signal in response to an attempted call. The call is attempted via a voice over packet-data-network system (VOPS), wherein the VOPS comprises voice over Internet Protocol (IP), voice over Frame Relay, voice over Asynchronous Transfer Mode (ATM), and voice over High-level Data Link Control (HDLC) network systems. Generation of the first ringing voltage signal is terminated upon expiration of the time limit. A control message is transmitted to terminate the attempted call, wherein the control message is transmitted via the VOPS.
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