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Inventor:
Armistead; R. Ashby
Address:
Los Altos, CA
No. of patents:
13
Patents:












Patent Number Title Of Patent Date Issued
7668158 Packet-switched telephony with circuit-switched backup February 23, 2010
A packet voice switch 60 and method for its operation are disclosed. The switch comprises a network switching means, preferably implemented within its host processor 78, that allows calls to be routed between a circuit-switched connection at circuit-switched interface 74 and either a
7616646 Intraserver tag-switched distributed packet processing for network access servers November 10, 2009
An access server architecture, and methods for use of the architecture to increase the scalability of and balance processor load for a network access server device, are disclosed. In this architecture, packet forwarding and packet processing are distributed amongst cards serving low-
7606245 Distributed packet processing architecture for network access servers October 20, 2009
An access server architecture, and methods for use of the architecture, are disclosed. The architecture and methods are designed to increase the scalability of and balance processor load for a network access server device. In this architecture, packet forwarding and packet processing are
7493411 Call control system and method for automatic routing of circuit switched data connections based February 17, 2009
A method and apparatus for automatic routing of multi-link circuit switched connections are shown. A routing processor monitors the behavioral characteristics of a previous connection from an originating client and stores data relating to the characteristics of the previous connectio
7116707 Modem failover without call loss October 3, 2006
A modem, multiple modem system, and method for operating each is disclosed. Modems in a multiple-modem system save their internal state information in a remote state memory. In the event of a modem failure, a resource controller transfers data-handling to a second available modem. Th
6954463 Distributed packet processing architecture for network access servers October 11, 2005
An access server architecture, and methods for use of the architecture, are disclosed. The architecture and methods are designed to increase the scalability of and balance processor load for a network access server. In this architecture, packet forwarding and packet processing are distri
6781983 Packet-switched telephony with circuit-switched backup August 24, 2004
A packet voice switch 60 and method for its operation are disclosed. The switch comprises a network switching means, preferably implemented within its host processor 78, that allows calls to be routed between a circuit-switched connection at circuit-switched interface 74 and either a
6643703 Method and apparatus for automatic routing of circuit switched data connections based upon store November 4, 2003
A method and apparatus for automatic routing of multi-link circuit switched connections are shown. A routing processor monitors the behavioral characteristics of a previous connection from an originating client and stores data relating to the characteristics of the previous connection. I
6553117 Programmable multiple-standard digital communications system April 22, 2003
A circuit for communicating digital data is disclosed. The circuit can connect with up to 12 digital data lines (L0 through L11) for communication under a T1 or E1 standard. Control processor 36 selects the appropriate communication standard to be used by each framer/line interface p
6529959 Method and apparatus for automatic routing of circuit switched data connections based upon store March 4, 2003
A method and apparatus for automatic routing of multi-link circuit switched connections are shown. A routing processor monitors the behavioral characteristics of a previous connection from an originating client and stores data relating to the characteristics of the previous connection. I
6522151 Digital communication system accepting both balanced and unbalanced data signals and method for February 18, 2003
A circuit and method for connecting data lines in a digital communication system are disclosed. The circuit allows either a balanced data line or an unbalanced data line to be connected to a single input port with no internal reconfiguration of the system. Connection to a balanced data l
6260071 Method and apparatus for automatic routing of circuit switched data connections based upon store July 10, 2001
A method and apparatus for automatic routing of multi-link circuit switched connections are shown. A routing processor monitors the behavioral characteristics of a previous connection from an originating client and stores data relating to the characteristics of the previous connection. I
6250936 Single-port connection and circuitry accepting both balanced and unbalanced data signals June 26, 2001
A circuit and method for connecting data lines to a digital communication system are disclosed. The circuit allows either a balanced data line or an unbalanced data line to be connected to a single input port with no internal reconfiguration of the system. Connection to a balanced data l










 
 
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