发明名称 Method and apparatus for providing ringing timeout disconnect supervision in remote telephone extensions using voice over packet-data-network systems (VOPS)
摘要 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.
申请公布号 US8848695(B2) 申请公布日期 2014.09.30
申请号 US201213405596 申请日期 2012.02.27
申请人 Cisco Technology, Inc. 发明人 Chung Wing-Kuen;Hwang Cherng-Daw;Tasker Michael Edric
分类号 H04L12/66;H03M3/02;H04L12/46;H04M7/00 主分类号 H04L12/66
代理机构 Schwegman Lundberg & Woessner, P.A. 代理人 Schwegman Lundberg & Woessner, P.A.
主权项 1. An apparatus to route integrated traffic comprising data, voice, and video traffic, the apparatus comprising: a resource manager module configured to: receive a request for a digital signal processor (DSP) channel to process digitized voice traffic;determine whether a DSP channel of a first DSP device is available to process the digitized voice traffic; andbased on a determination that the DSP channel of the first DSP device is available, assign the DSP channel of the first DSP device to process the digitized voice traffic; a first resource pool configured to logically store available DSP devices, each DSP device including one or more channels to process the digitized voice traffic; a second resource pool configured to logically store available DSP channels; and a third resource pool configured to logically store DSP channels assigned to process digitized voice traffic, wherein based on a determination that the DSP channel of the first DSP device is not available, the resource manager module is further configured to: remove the second DSP device from the first resource pool,fragment channels of a second DSP device into one or more unassigned DSP channels;assign a channel of the one or more unassigned DSP channels to process the digitized voice traffic; andplace the assigned channel in the third resource pool and the unassigned fragmented channels in the second resource pool, wherein the resource manager module is further configured to: release the assigned DSP channel upon completion of processing of the digitized voice traffic;join the released DSP channel with one or more adjacent DSP channels;determine whether the joined DSP channels form a DSP device;based on a determination that the joined DSP channels form the DSP device, place the DSP device in the first resource pool; andbased on a determination that the joined DSP channels do not form the DSP device, place the released DSP channel and the one or more adjacent DSP channels in the second resource pool.
地址 San Jose CA US