Patents by Inventor Paul R. P. Chu
Paul R. P. Chu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9191427Abstract: Disclosed are a method, apparatus and system for interworking between H.320 or H.324 and SIP. The method comprises receiving a SIP message indicative of capabilities supported by a first endpoint device and deferring responding to the SIP message. The method further comprises receiving from a second endpoint device an H.320 or H.324 message indicative of the capabilities supported by the second endpoint device in response thereto responding to the SIP message thereby to establish a media communication channel between the first and second endpoint devices based on their respective capabilities.Type: GrantFiled: January 23, 2014Date of Patent: November 17, 2015Assignee: Cisco Technology, Inc.Inventors: Parameswaran Kumarasamy, Yu Zhang, Sabita Jasty, Mark Conner, Sandeep Singh Bhupinder Kohli, Paul R. P. Chu
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Patent number: 9106714Abstract: Techniques are provided for sending from a client in a network device a request message configured to request configuration parameters to allow the network device to operate as a source or destination node for packet switched network telephony activity. In response to receiving the request message, sending the configuration parameters from a server configured to retrieve the configuration parameters from a call provisioning server. The configuration parameters are received at the client and passed to a call agent in the network device in order to configure the network device to operate as a source or destination node for packet switched network telephony activity.Type: GrantFiled: July 23, 2009Date of Patent: August 11, 2015Assignee: Cisco Technology, Inc.Inventors: Parameswaran Kumarasamy, Paul R. P. Chu, Andrew W. Au
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Publication number: 20140132704Abstract: Disclosed are a method, apparatus and system for interworking between H.320 or H.324 and SIP. The method comprises receiving a SIP message indicative of capabilities supported by a first endpoint device and deferring responding to the SIP message. The method further comprises receiving from a second endpoint device an H.320 or H.324 message indicative of the capabilities supported by the second endpoint device in response thereto responding to the SIP message thereby to establish a media communication channel between the first and second endpoint devices based on their respective capabilities.Type: ApplicationFiled: January 23, 2014Publication date: May 15, 2014Applicant: Cisco Technology, Inc.Inventors: Parameswaran Kumarasamy, Yu Zhang, Sabita Jasty, Mark Conner, Sandeep Singh Kohli, Paul R.P. Chu
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Patent number: 8675637Abstract: Disclosed are a method, apparatus and system for interworking between H.320 or H.324 and SIP. The method comprises receiving a SIP message indicative of capabilities supported by a first endpoint device and deferring responding to the SIP message. The method further comprises receiving from a second endpoint device an H.320 or H.324 message indicative of the capabilities supported by the second endpoint device in response thereto responding to the SIP message thereby to establish a media communication channel between the first and second endpoint devices based on their respective capabilities.Type: GrantFiled: April 18, 2007Date of Patent: March 18, 2014Assignee: Cisco Technology, Inc.Inventors: Parameswaran Kumarasamy, Yu Zhang, Sabita Jasty, Mark Conner, Sandeep Singh Bhupinder Kohli, Paul R. P. Chu
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Patent number: 8331352Abstract: A method for interworking supplementary call services between different VOIP protocols is provided. The method comprises receiving, during a call between a first end device and a second end device, a first message in a first protocol format for the second end device to transfer the call to a third end device; determining interworking information to interwork the first message to a second message in a second protocol format; generating the second message based on the interworking information, such that the second message initiates the call transfer to the third end device.Type: GrantFiled: February 5, 2007Date of Patent: December 11, 2012Assignee: Cisco Technology, Inc.Inventors: Parameswaran Kumarasamy, Paul R. P. Chu, Jayesh Chokshi, Sunila R. Ainapure, Sandeep Singh Kohli, Sabita Jasty, Vijay Kannan
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Patent number: 8064435Abstract: Methods and systems for optimizing interworking between various communication protocols are provided. The method comprises establishing a communication connection between a first endpoint and a second endpoint, wherein the first endpoint communicates over a first communication protocol and wherein the second endpoint communicates over a second communication protocol; and monitoring communication between the first and second endpoints such that communication messages that are transmitted by the first endpoint over the first communication protocol can be mapped to counterpart messages to be received by the second endpoint over the second communication protocol, and communication messages that are transmitted by the second endpoint over the second communication protocol can be mapped to counterpart messages received by the first endpoint over the first communication protocol.Type: GrantFiled: March 1, 2007Date of Patent: November 22, 2011Assignee: Cisco Technology, Inc.Inventors: Mohammed Taher Shaikh, Paul R. P. Chu, Sunila R. Ainapure, Viraj Raut
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Publication number: 20110019660Abstract: Techniques are provided for sending from a client in a network device a request message configured to request configuration parameters to allow the network device to operate as a source or destination node for packet switched network telephony activity. In response to receiving the request message, sending the configuration parameters from a server configured to retrieve the configuration parameters from a call provisioning server. The configuration parameters are received at the client and passed to a call agent in the network device in order to configure the network device to operate as a source or destination node for packet switched network telephony activity.Type: ApplicationFiled: July 23, 2009Publication date: January 27, 2011Applicant: CISCO TECHNOLOGY, INC.Inventors: Parameswaran Kumarasamy, Paul R. P. Chu, Andrew W. Au
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Publication number: 20080259907Abstract: Disclosed are a method, apparatus and system for interworking between H.320 or H.324 and SIP. The method comprises receiving a SIP message indicative of capabilities supported by a first endpoint device and deferring responding to the SIP message. The method further comprises receiving from a second endpoint device an H.320 or H.324 message indicative of the capabilities supported by the second endpoint device in response thereto responding to the SIP message thereby to establish a media communication channel between the first and second endpoint devices based on their respective capabilities.Type: ApplicationFiled: April 18, 2007Publication date: October 23, 2008Inventors: Parameswaran Kumarasamy, Yu Zhang, Sabita Jasty, Mark Conner, Sandeep Singh Bhupinder Kohli, Paul R. P. Chu
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Publication number: 20080212594Abstract: Methods and systems for optimizing interworking between various communication protocols are provided. The method comprises establishing a communication connection between a first endpoint and a second endpoint, wherein the first endpoint communicates over a first communication protocol and wherein the second endpoint communicates over a second communication protocol; and monitoring communication between the first and second endpoints such that communication messages that are transmitted by the first endpoint over the first communication protocol can be mapped to counterpart messages to be received by the second endpoint over the second communication protocol, and communication messages that are transmitted by the second endpoint over the second communication protocol can be mapped to counterpart messages received by the first endpoint over the first communication protocol.Type: ApplicationFiled: March 1, 2007Publication date: September 4, 2008Inventors: Mohammed Taher Shaikh, Paul R. P. Chu, Sunila R. Ainapure, Viraj Raut
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Publication number: 20080186954Abstract: A method for interworking supplementary call services between different VOIP protocols is provided. The method comprises receiving, during a call between a first end device and a second end device, a first message in a first protocol format for the second end device to transfer the call to a third end device; determining interworking information to interwork the first message to a second message in a second protocol format; generating the second message based on the interworking information, such that the second message initiates the call transfer to the third end device.Type: ApplicationFiled: February 5, 2007Publication date: August 7, 2008Inventors: Parameswaran Kumarasamy, Paul R. P. Chu, Jayesh Chokshi, Sunila R. Ainapure, Sandeep Singh Kohli, Sabita Jasty, Vijay Kannan
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Publication number: 20080137650Abstract: A method and apparatus is described to convert DTMF packets at a network node in an IP network. The method may comprise receiving an Internet Protocol (IP) packet at the network node connected via a first IP network link to a first network device, and connected via a second IP network link to a second network device. The method may determine a first DTMF packet format for the first IP network link and a second DTMF packet format for the second IP network link and detect that only one of the first or second DTMF packet formats is in-band voice DTMF. Thereafter, the method may convert the received IP packet from the first DTMF packet format to the second DTMF packet format.Type: ApplicationFiled: December 11, 2006Publication date: June 12, 2008Inventors: Parameswaran Kumarasamy, Kan Wu, Paul R.P. Chu, Jayesh Chokshi