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| Number | Title | Issue Date |
| 7295547 | Audio gateway device A gateway device includes PDTN line terminating portion 1, audio data processing portion 2, header processing portion 3, packet network line terminating portion 4 and gateway control processor 5. Header processing portion 3 ... | 11/13/2007 |
| 7139263 | Voice over IP architecture A Voice over Internet Protocol (VoIP) network is described in which session state is maintained in access switches, but not signaling gateways which maintain transaction state only during pendency of a related transaction. The signaling gateway further provides tran... | 11/21/2006 |
| 6978304 | Method of remotely monitoring an internet session A method of remotely monitoring an Internet session includes participating in a first Internet session at a first Internet protocol (IP) address. Concurrent with the first Internet session, another Internet session is initiated at another IP address. Data associated... | 12/20/2005 |
| 6940866 | Edge device and method for interconnecting SS7 signaling points(SPs) using edge device Methods and systems for interconnecting SS7 signaling points include connecting an edge device to a plurality of SS7 service switching points using fixed-bandwidth SS7 links. The edge device is connected to an SS7/IP gateway using a variable-bandwidth signaling link... | 09/06/2005 |
| 6912581 | System and method for concurrent multimodal communication session persistence A method and apparatus maintains, during non-session conditions and on a per user basis, concurrent multimodal session status information of user agent programs configured for different concurrent modality communication during the same session, and re-establish a co... | 06/28/2005 |
| 6694008 | Monitored suspension of communications sessions A communications apparatus establishes a communications session with a remote location and receives a request to place the communications session into monitored suspension. While in monitored suspension, the apparatus maintains the communications session,... | 02/17/2004 |
| 6430284 | System and method for redirecting control of in-band signaling In a telecommunication system having a network switch capable of independently controlling inbound and outbound call legs, a system for, and method of, redirecting in-band control of signaling pertaining to a call placed by a calling party and a system fo... | 08/06/2002 |
| 6314175 | System and method for redirecting control of in-band signaling In a telecommunication system having a network switch capable of independently controlling inbound and outbound call legs, a system for, and method of, redirecting in-band control of signaling pertaining to a call placed by a calling party and a system fo... | 11/06/2001 |
| 6178234 | Intelligent networked, automated telephone calling card service system capable of bailout to an operator A telephone calling card (prepaid or postpaid) service system with an intelligent network (IN) for automated call processing has a bailout capability for bailing out a call placed directly to the IN, to an operator for assistance upon the occurrence of pr... | 01/23/2001 |
| 5590181 | Call-processing system and method A system and method for processing telephone calls and providing enhanced services is presented. The call processing system includes a network control processor for controlling the processing and routing of the calls and for providing enhanced features, a... | 12/31/1996 |
| 5394464 | Progressive automatic activation and automatic resetting of call coverage An automatically progressively-activated and reset "send-all-calls" (SAC) feature provides the following functionality. In response to receipt at a switching system of each call for a destination subscriber station that has the feature enabled, the system... | 02/28/1995 |
| 5339356 | Virtual private network connecting system A virtual private network connecting system in a virtual private network is formed by accommodating in a public network a plurality of PBX units each assigned a unique private office number (ON), the system executed by the units comprising in each of the ... | 08/16/1994 |
| 3934095 | Method and system for short term queuing of telephone calls in automatic inter-city telephone call connection system The specification discloses a system for automatically controlling the connection of telephone calls between a plurality of input telephone trunk lines at a user's dedicated telephone switching facility and a preset number of output telephone trunk lines.... | 01/20/1976 |
| 3931476 | Method and system for automatically controlling the connection of inter-city telephone calls at a users facility The specification discloses a system for automatically controlling the connection of inter-city telephone calls between a plurality of input telephone trunk lines at a user's branch exchange and a preset number of output telephone trunk lines. Circuitry i... | 01/06/1976 |
