Class / Patent application number | Description | Number of patent applications / Date published |
370354000 | Switching network having separate elements to handle circuit switched traffic and packet switched traffic | 23 |
20080232356 | INTERNET PROTOCOL COMPLIANT PRIVATE BRANCH ELECTRONIC EXCHANGE AND A METHOD FOR REDUNDANTLY CONFIGURING TERMINAL INTERFACES - The IP-PBX includes a multimedia gateway controller in which a call control data master table stores call control data for all terminals falling under the control of the IP-PBX. In the event of failure of a PH accommodating IP phones and the like via the LAN, the multimedia gateway controller transfers the contents of the call control data slave table existing on the PH to the call control data slave table on another PH. | 09-25-2008 |
20080240087 | HYBRID INTERNET PROTOCOL BASED SESSION CONTROL PROTOCOL AND PSTN COMMUNICATIONS - In one of many possible embodiments, a hybrid end-user communication apparatus includes a Public Switched Telephone Network (“PSTN”) interface enabling communication over a Public Switched Telephone Network (“PSTN”) and a packet-switched network interface enabling signaling over a packet-switched network. The apparatus is configured to use the signaling to control a communication over the PSTN. In certain embodiments, the signaling includes Session Initiation Protocol (“SIP”) signaling. In certain embodiments, the communication over the PSTN includes a Public Switched Telephone Network (“PSTN”) media stream transmission over a Public Switched Telephone Network (“PSTN”) media bearer path. | 10-02-2008 |
20080304475 | Hybrid fiber twisted pair local loop network service architecture - A new architecture capable of utilizing the existing twisted pair interface between customer premises equipment and an associated serving local switching office is used to provide a vast array of new services to customers. Using an intelligent services director (ISD) at the customer services equipment as an interface for the equipment to an existing twisted cable pair and a facilities management platform (FMP) at the serving local switching office as an interface to various networks and service opportunities, new services such as simultaneous, multiple calls (voice analog or digital), facsimile, Internet traffic and other data can be transmitted and received over the twisted cable pair by using digital subscriber loop transmission schemes. The new services include but are not limited to videophone, utility meter reading and monitoring, broadcasting and multicasting. The architecture provides for fault-tolerant, transparent interaction of components and services and supports a variety of standards for each level of the open systems interconnection layers and layers of TCP/IP. The FMP connects electronically or optically to the public switched telephone network, Internet backbone, a private Intranet as well as other possible network connections. | 12-11-2008 |
20080310405 | Cooperative multiple access in wireless networks - A cooperative cluster of wireless nodes exchange data before cooperatively communicating with a destination node over a MIMO channel. In a cooperative cluster of M nodes, each node shares 1/M of its own data with each of the other nodes, and keeps 1/M of its own data for transmission. Each node receives 1/M of data from each cooperative node. The data is merged at each cooperative node, and transmitted to the destination node. | 12-18-2008 |
20090059907 | System, method and device for docking station for communication device - A docking station provides fixed mobile convergence and includes a docking interface for a communication unit, a transceiver for a fixed packet network, and/or a telephone interface to a public switched telephone network (PSTN) telephone. The method includes detecting if the communication unit, fixed packet network, and/or PSTN telephone is connected. If the fixed packet network is available and the communication unit connected, a connection is established between the two in response to a call initiated/received at the communication unit; packets are transferred so that calls on the communication unit are conducted over the fixed packet network. If the PSTN telephone and the communication unit are connected, a connection is established between the two in response to a call initiated at the PSTN telephone or received at the communication unit; protocols are interworked to permit calls placed/received on the PSTN telephone to be conducted over the cellular network. | 03-05-2009 |
20090067415 | Optical network terminal with integrated internet protocol private branch exchange - Internet Protocol (IP) private branch exchange (IP-PBX) functionality may be provided on existing optical network terminal (ONT) hardware without support of an IP-PBX device by using a method of managing an IP-PBX that includes identifying IP configuration data on downstream network communications associated with at least one private IP branch exchange service received from an upstream node on a session initiation protocol (SIP) network and applying the configuration data to a node in an access network that supports the IP-PBX service. In this way, centralized configuration of IP-PBX services are supported, simplifying network management for service providers. | 03-12-2009 |
20090141710 | ACCESS SYSTEM, METHOD, AND DEVICE - An integrated access system and method and an integrated access module are provided. The system includes a broadband service interface module ( | 06-04-2009 |
20110085542 | METHOD AND SYSTEM FOR SUPPORTING SHARED LOCAL TRUNKING - An approach is described for providing shared trunking between a telephony gateway and an end office switch. The telephony gateway processes a packetized voice call, and interfaces a shared trunk to an end office switch (e.g., Class 5 switch) configured to switch calls over a circuit-switched telephone network. The trunk utilizes out-of-band signaling (e.g., Primary Rate Interface (PRI) signaling) in support of call establishment or teardown of the packetized voice call. | 04-14-2011 |
20110292931 | NETWORK SYSTEM AND NETWORK APPARATUS - In a virtual network apparatus, even when a fault occurs on a private line connecting plural physical network apparatuses to communicate a control signal, the redundancy is maintained, and the lower forwarding capability is prevented. In this network system, a control signal for virtualization to be transmitted and received between plural physical network apparatuses is relayed via a unit spanning LA connecting each physical network apparatus and an adjacent network apparatus in the adjacent network apparatus. Thereby, even when a fault occurs in the private line, it is possible to continue to communicate the control signal between the physical network apparatuses and continuously operate the virtual network apparatus. | 12-01-2011 |
20120163373 | TRANSPORTING MULTICAST OVER MPLS BACKBONE USING VIRTUAL INTERFACES TO PERFORM REVERSE-PATH FORWARDING CHECKS - A mechanism is provided in which multicast reverse path forwarding can be performed at a provider network egress edge router wherein core routers of the provider network are not configured to support multicast protocols or point-to-multipoint LSPs. An embodiment of the present invention provides for the creation of virtual interfaces in the egress edge router element during configuration of a multicast connection in response to a subscriber request. A virtual interface will be associated with an upstream ingress edge router element and that ingress edge router element is provided a label associated with the virtual interface. Such a label can then be included in datastream packets transmitted through the provider network and be used by reverse path forward checking at the egress edge router element to ascertain whether the multicast datastream is being received by the correct upstream interface. | 06-28-2012 |
20120177034 | TECHNIQUES FOR TRUNK OPTIMIZATION FOR IMS VOICE CALLS BETWEEN ORIGINATING UE AND TERMINATING UE HOMED IN A CIRCUIT SWITCHED NETWORK - A method and Voice Call Continuity (VCC) application server to perform trunk optimization for an Internet Protocol (IP) Multimedia Subsystem (IMS) voice call between an originating User Equipment (UE) and a terminating UE, which are homed in a CS network, is provided. The method includes receiving a request from the originating UE for an IMS voice call with the terminating UE, determining whether the VCC application server serves both the originating UE and the terminating UE, and, if it is determined that the VCC application server serves both the originating UE and the terminating UE, controlling to establish a bypass bearer for the IMS voice call between the originating UE and the terminating UE that bypasses the CS network. | 07-12-2012 |
20120207151 | METHOD AND SYSTEM FOR PROVIDING SECURE COMMUNICATIONS BETWEEN PROXY SERVERS IN SUPPORT OF INTERDOMAIN TRAVERSAL - An approach provides interdomain traversal to support packetized voice transmissions. A request is received and specifies a directory number for establishing a communication session from a first endpoint to a second endpoint. The first endpoint is behind a first network address translator of a first domain, and the second endpoint is within a second domain. A service provider network is accessed to determine a network address for communicating with the second endpoint based on the directory number, to determine existence of a second network address translator within the second domain, and to establish, if the network address can be determined, a media path between the first endpoint and the second endpoint based on the network address to support the communication session. An encrypted session is established with a proxy server according to a cryptographic protocol to support the media path. The proxy server resides within the second domain. | 08-16-2012 |
20130250944 | METHOD AND APPARATUS RESOLVING ENUM DATA COLLISIONS - An example method involves, when telephone number mapping data packets are query packets, sending the query packets to a virtual Internet protocol address of a telephone number mapping domain name system server; when the telephone number mapping data packets are provisioning packets, sending the provisioning packets to a virtual Internet protocol address of a telephone number mapping lightweight directory access protocol server; and waiting and sending traffic to one lightweight directory access protocol server at a time. | 09-26-2013 |
20130266004 | COMMUNICATIONS SYSTEM AND A METHOD FOR COMMUNICATIONS BETWEEN INTERNET AND NGN/IMS SUBSYSTEMS - The system comprises:
| 10-10-2013 |
20130272299 | MULTI-PROTOCOL TELECOMMUNICATIONS ROUTING OPTIMIZATION - A telecommunications switching system employing multi-protocol routing optimization which utilizes predetermined and measured parameters in accordance with a set of user priorities in determining the selection of a telecommunications path to be utilized for transmitting a data file to a remote destination. The switching system has a first memory for storing the data file to be transferred, a second memory for storing predetermined parameters such as cost data associated with each of the telecommunications paths, a third memory for storing a set of user priorities regarding the transmission of data files, and means for measuring the value of variable parameters such as file transfer speed associated with each of the telecommunications paths. Processor means are operatively associated with the second and third memories and the variable parameter measuring means for determining which of the plurality of telecommunications paths should be utilized for transferring the data file in accordance with the set of user priorities, the predetermined telecommunications path parameters, and the measured variable parameters. The switching system further comprises input means for allowing a user to change the user priorities in the third memory prior to transmitting a file. | 10-17-2013 |
20130308634 | SYSTEMS AND METHOD FOR ENABLING IP SIGNALING IN WIRELESS NETWORKS - Under one aspect, a system for transmitting an IP-based message from an initiator to a receiver lacking an IP address via a packet-switched (PS) network capable of communicating IP-based messages and a circuit-switched (CS) network capable of communicating non-IP-based messages, includes: a serving node in communication with the PS network and the CS network, the serving node including logic to: receive the IP-based message from the initiator over the PS network; generate a trigger message responsive to the IP-based message, the trigger message including a non-IP-based message including instructions for the receiver to initiate a connection to the PS network; and transmit the trigger message to the receiver via the CS network, and the receiver including logic to initiate a connection to the PS network and to receive the IP-based message responsive to the trigger message. Methods are also disclosed. | 11-21-2013 |
20140044126 | Scalable Media Access Control Protocol Synchronization Techniques for Fabric Extender Based Emulated Switch Deployments - Techniques are provided to prevent switches in a data center fabric path environment with fabric path extension devices from media access control (MAC) address flooding and MAC address table overflow. In such an environment, endpoints associated with virtual port channels are connected to multiple switches which normally would perform MAC address flooding across all switch forwarding engines. The switches in the fabric path exchange MAC synchronization messages based on source/destination specific connectivity such that MAC broadcast messages that advertise source/destination MAC addresses for endpoints do not have to be repeatedly sent and their corresponding MAC lookup tables do not have to be updated or include unnecessary MAC table entries. | 02-13-2014 |
20140071981 | E911 Location Server - A system including a location server configured to receive registration data from an IP device and a location database configured to store location information of the IP device, wherein the location server queries the location database to determine whether the registration data matches the location information stored at the location database. | 03-13-2014 |
20140314075 | COMMUNICATION SYSTEM, APPLICATION DEVICE AND COMMUNICATION METHOD SUPPORTING CIRCUIT SWITCH AND PACKET SWITCH - The present invention discloses a communication system supporting Circuit Switch (CS) and Packet Switching (PS), which includes several CS communication devices, an application device and at least one network communication device. The network communication device builds a connection with a PS communication unit of the application device through a network. When the CS communication devices communicate with a CS communication unit of the application device through a CS interface, a processing unit of the application device converts several voice signals transmitted between the CS communication devices and the at least one network communication device, such that the CS communication devices builds a voice connection with the at least one network communication device. The present invention also discloses an application device and a communication method supporting CS and PS. | 10-23-2014 |
20160056950 | COMMUNICATION SYNCHRONIZATION - Aspects of the present disclosure provide communications between local and remote devices having low-frequency (LF) and high-frequency (HF) circuits. As may be implemented in accordance with one or more embodiments, the local device transmits an LF signal to the remote device, which synchronizes its clock based on the LF signal. Another LF signal is communicated from the local device to the remote device using a reduced quality factor, which can be implemented to facilitate synchronization. The clock is resynchronized based on the second LF signal and used to transmit an HF signal with a time delay. The local device synchronizes its clock based on the HF signal, and transmits another HF signal to the remote device using the clock and another time delay. The remote device re-synchronizes its clock based on the second HF signal while accounting for a trip time for communicating the first and/or second HF signals. | 02-25-2016 |
20160072760 | DEVICE AND METHOD FOR THE RECOGNITION OF CALL NUMBERS FOR VOICE-OVER-IP TELEPHONY - Call numbers are recognized in order to establish a connection from a lie-switched network to a packet-switched network. In one aspect, a device comprises a unit for detecting a selected string of digits as a selected call number, a unit for storing a plurality of authorized call numbers, a comparator unit for comparing the selected all number to the plurality of stored call numbers, and a unit for converting the selected call number into an associated IP address as soon as the comparator unit detest that the selected call number matches one of the stored all numbers. | 03-10-2016 |
20160165062 | DATA/CIRCUIT CHANNEL HANDOFF FOR IP TELEPHONY NETWORK - A method of operating an internet-based telephony system comprises establishing a communication between a first telephony device and a second telephony device through the internet-based telephony system. The communication at least initially comprises a first leg of the communication and a second leg of the communication, with the first leg of the communication existing between the first telephony device and the internet-based telephony system and the second leg of the communication existing between the second telephony device and the internet-based telephony system. The method further comprises receiving a connection-request message from the first telephony device; and, as a result thereof at least partially replacing a replaceable leg with a replacement leg having a different channel type than the replaceable leg. The replaceable leg is one of the first leg of the communication and the second leg of the communication, and the different channel type is either a data channel or a circuit channel. | 06-09-2016 |
20160191714 | IMPROVEMENTS IN CENTRAL STATION CONNECTIVITY - Data switching means ( | 06-30-2016 |