2034 results about "Media gateway" patented technology

A method and system to provide push-to-talk from one user to another in a wireless packet data telecommunications network is described. The system may include: a wireless communication network including push-to-talk (PTT) functionality, with a Session Initiation Protocol (SIP) Proxy Server; a SIP Registrar and Location Server operable to store contact addresses of active mobile devices; a Realtime Transport Protocol (RTP) Media Gateway (PTT Server) operable to function as a call endpoint for each of a plurality of mobile devices wherein the plurality of mobile devices are segmented into membership groups, the PTT Server further operable to multicast a communication from one member of the group to the other members of the group; and an Internet Protocol (IP) network interconnecting the SIP Proxy server, the SIP Registrar and Location Server, and the PTT Server.

In a VoIP system, a method and apparatus for tracking emergency callers is provided. A VoIP service provider network includes a plurality of VoIP phones and is connected to an emergency service provider system. The emergency service provider system includes a call server connected to the VoIP service provider network; a subscriber database; a VPC SBC; and a media gateway for connection to a PSTN. The call server is adapted to receive an emergency call from a VoIP telephone in the VoIP network; verify if the SIP URI has a DID bound to the SIP URI; if the SIP URI does not have a DID bound to the SIP URI, obtain a temporary DID from a DID pool and temporarily bind the temporary DID to the SIP URI; and forward the call to an appropriate PSAP in the PSTN. Should the emergency call be dropped, a person at the PSAP can call back the emergency caller without unnecessary delays.

A method and device are disclosed which receives packets streamed over a packet network, decodes the packets received to generate a decoded signal stream and filters the decoded signal stream to generate a pulse code modulated (PCM) signal stream. The PCM signal stream may be tailored to conform to the target destination transport requirements, including call channels established over circuit-switched networks, whether wired or wireless, without modifying the capabilities associated with the network infrastructure or the client phone.

An integrated phone-based home gateway system. The integrated phone-based home gateway system is a multi-function wireless and wired networking, wireless and wired telephony, broadband, gateway device. It provides automatic wireless and wired broadband initialization, configuration and service provisioning, gateway, routing and bridging functionality, wireless and wired data and telephony functionality and allows resource sharing among multiple wireless and wired devices.

A home gateway for a home media network. The home gateway comprises a number of input interfaces each configured for receiving encrypted & unencrypted data from a content source, a layout generation unit adapted to generate substantially simultaneously a number of different composite layout streams. Each one of the different composite layout streams is generated according to one or more of the number of input interfaces. The home gateway further comprises a number of output interfaces for providing a number of client stations with the ability to access one or more of the number of different composite layout streams in encrypted & unencrypted manner.

A system and method for routing calls from a time-division multiplexed (TDM) sets in an IP network to a geographically appropriate portion of the public switched telephone network (PSTN). A call is routed to an edge gateway in a geographic location corresponding to the geographic location of an IP media gateway to which the TDM set is connected. Each IP media gateway is associated with a geographic zone. Each geographic zone is also associated with at least one edge gateway. Accordingly, incoming calls are routed by the central call server based upon the geographic zone associated with the IP media gateway receiving the call, and are routed to an edge gateway associated with the identified geographic zone. The system and method may be applied to route emergency service access calls to an appropriate portion of the PSTN so that they arrive at a geographically appropriate public service answering point (PSAP).

A system and method of the present invention for implementing multimedia calls across a private network boundary is provided, the system comprising a public network and at least one private network, and at least the following hardware components: at least one media gateway for connecting with multimedia terminals of various protocols; at least one boundary gateway for connecting the private network and the public network and performing the translation of a private network address and a public network address between each other, wherein each boundary gateway is provide with an unique subnetwork ID to correspond to the private network connected therewith; a call controller for establishing calls and controlling service logics, in which is recorded the correspondence relationship information of all said boundary gateways and the subnetwork IDs; wherein, the call controller processes a call concerning a private network according to the subnetwork ID information. The system and method of the present invention is simple to implement, has high efficiency and wide application range; saves the boundary gateway resources, does not modify the signaling content and retain its integrity; is applicable to the media gateways of various protocols, and has a high adaptability.

The invention relates to a method for the provision of a user interactive dialogue UID prior to connection acceptance service for telecommunication terminals in a communication network, wherein a media gateway controller forms a service switching point SSP. Parameters and signaling information necessary for controlling the UID prior to connection acceptance service are transmitted by conversion to the session initiation protocol SIP or are transmitted there from in a standard signaling protocol.

An interface for a private IP network interfaces flows of packets between gateway controllers and external media gateways. It has a network address translator and an IPsec device for maintaining secure paths to the external devices. A path identifier records which of the packet flows corresponds to which path. It is incorporated in the packet header, and means that the same interface can be used to couple many different external gateways, and interface them with many of the gateway controllers. Widespread deployment of such interfaces in anonymisers to achieve hiding of device addresses and network topology, as well as the reduction in use of expensive registered addresses is facilitated. By sending the path identifier in the packet, the IPsec device and the address translator can be loosely coupled devices, so standard readily available devices can be used.

A method of controlling call admission within a system comprising a plurality of media gateways (8, 9) interconnected by a packet switched backbone (5). The method comprises, at least one media gateway (8, 9), monitoring the level of congestion suffered by incoming packets to that gateway from each other media gateway over said backbone. Following receipt of a request for a media gateway (8, 9) to terminate a bearer extending over said backbone (5) from a peer media gateway, making a decision on the admissibility of that request based upon the previously monitored level of congestion suffered by incoming packets from that peer media gateway.

A comprehensive signalling node is provided according to an embodiment of the invention. The comprehensive signalling node includes a signalling interface adapted for transmitting and receiving signalling communications and a storage system configured to store a Media Gateway Controller (MGC) routine, to store a Session Initiation Protocol (SIP) routine, to store a Session Border Controller (SBC) routine, to store a Push-To-Talk (PTT) routine, to store a H.323 routine, to store a Wide Area Network (WAN) compression routine, and to store a Communication Assistance for Law Enforcement (CALE) routine. The comprehensive signalling node further includes a processing system that is configured to receive a signalling communication through the signalling interface, process the signalling communication with the MGC routine if appropriate, with the SIP routine if appropriate, with the SBC routine if appropriate, with the PTT routine if appropriate, with the H.323 routine if appropriate, with the WAN compression routine if appropriate, or with the CALE routine if appropriate.

A loop carrier system includes a home local area network having plural telephone modules and a hub coupled to in-home telephone wiring. The telephone modules and the hub communicate voice signals over the in-home wiring in a dedicated frequency band above baseband POTS. The hub converts between voice signals and voice packets and is connected to a network access device for transferring the voice packets from the home local area network to a telecommunications network which routes the voice packets to a gateway. The gateway converts between the voice packets and a circuit format compatible with a local digital voice switch. The gateway includes an ATM switch and a call processing adjunct coupled to the ATM switch. The call processing adjunct controls the conversion between voice packets and the circuit format at the ATM switch. The call processing adjunct communicates with the home local area network using a first signaling protocol such as Media Gateway Control Protocol, Session Initiation Protocol or H.323, and with the local digital switch using a second signaling protocol such as GR-303 for controlling call processing in the communication system.

A media gateway/media server (MGMS) distributes video, without impairment, from a variety of sources, over an in-home distribution medium (such as coaxial cable) directly to one or more conventional televisions sets within a house, i.e., without requiring specially adapted hardware, such as a set-top-box, at each television set. One or more peripheral control devices can be used to control the MGMS and select video content to be displayed on the various television sets. The MGMS produces a signal, such as an ATSC, DVB or QAM signal, that the television sets can receive directly, i.e., without additional hardware. In some embodiments, each television set has an associated dedicated channel on the in-home distribution medium, and the MGMS sends video content to a particular television set by modulating the video content onto the channel dedicated to that television set.

Methods and systems for per-session NAT learning and firewall filtering are disclosed. Media packets associated with a call/session are received and processed at a media gateway. For the first few received media packets associated with a session, the media gateway uses various unique methods to learn the actual source IP address and UDP port assigned to the remote communication terminal by its customer-premises Network Address Translators (NATs) to the media flows of the current session. After the remote IP and UDP are learned, the media gateway reconfigures its firewall filtering function to check both the dynamically learned remote IP and UDP and the locally assigned IP and UDP of the current session. The per-session NAT learning function removes reachability issues in VoIP deployment, and the per-session firewall filtering function enhances security protection in VoIP deployment.

A method of processing multi-media service requests received at a multi-media services provider computer system, including a processor coupled to a media gateway controller and to a media server. The method includes receiving a message from a SIP INVITE-enabled communication device at the media gateway controller. The message is processed at the media gateway controller and at the processor for generating an instruction message with unique indicators, which is communicated to the media server in a SIP INVITE format. The media server processes the instruction message to provide media services and collect user-information from the communication device. The media server processes the user-information and generates a first message in an HTTP form POST format with unique indicators, which includes the user-information and which can be processed at the processor. In this manner, the multi-media services provider computer system is compatible with the SIP INVITE-enabled device.

A system and method for facilitating authentication or identification services including an authentication server configured to provide an authentication certificate to a user of a first client device for authentication or identification of a user of a second client device. The first and second client devices are configured to communicate with each other and the authentication server. Each of the first and second client devices includes a user control program configured to communicate data to and from the authentication server. A media gateway is coupled to the authentication server to enable communication of media data from the first and second client devices to the authentication server. The user control program of the first client device is configured to receive a certificate corresponding to the user of the second client device and the authentication certificate from the authentication server. The user control program of the first client device is configured to authenticate the user of the second client device by comparing the certificate corresponding to the second client device and the authentication certificate.

Methods and systems for sharing white space with primary services and other emerging services are provided. Signal distribution within a specified location, such as a dwelling, is performed using a home gateway that identifies unused white space, reserves such white space spectrum, and delivers data to one or more devices at the respective location using the reserved spectrum. Signalling between the devices and the gateway is performed over a shared signalling channel, which enables the gateway to advise the devices from where and when to receive data. The gateway also uses a common spectrum reservation OFDM symbol to advise the neighbouring gateways of the local spectrum reservation.

In a communications network, voice and facsimile calls are established between first and second and second terminals via first and second media gateways in a communications network. Each gateway is capable of autonomous transitioning between a voice over IP (VoIP) call mpde and a facsimile ov er IP (FoIP) call mode. A bearer path for the call is established via a media gateway controller. During call setup, the media gateways exchange confirmation of each gateway's capability to perform autonomous transitioning between VoIP and FoIP call modes. The call is established as a VoIP call, and, on a determination by the media gateways that a facsimile call is required, each media gateway autonomously transitions between its VoIP and FoIP call modes without the intervention of the media gateway controller.

A method and system to provide push-to-talk from one user to another in a wireless packet data telecommunications network is described. The system may include: a wireless communication network including push-to-talk (PTT) functionality, with a Session Initiation Protocol (SIP) Proxy Server; a SIP Registrar and Location Server operable to store contact addresses of active mobile devices; a Realtime Transport Protocol (RTP) Media Gateway (PTT Server) operable to function as a call endpoint for each of a plurality of mobile devices wherein the plurality of mobile devices are segmented into membership groups, the PTT Server further operable to multicast a communication from one member of the group to the other members of the group; and an Internet Protocol (IP) network interconnecting the SIP Proxy server, the SIP Registrar and Location Server, and the PTT Server.

A wireless office communication system including a multi-protocol wireless internet base station (WIBS) encompassing a base station controller (BSC), a mobile switch controller (MSC) and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. The interface module provides for coupling the WIBS to an ethernet back-bone, a mobile communication unit and a public switch telephone network (PSTN). In one embodiment the wireless communication system includes wireless signaling logic and media gateway logic to enable the wireless office communication system to handle signal transmission between a mobile terminal and a media gateway. A virtual circuit identity code (VCIC) enables the base station to provide a virtual traffic path (VTP) to link communications between TIA/EIA-634 wireless signaling and media gateway control protocol (MGCP).

An approach provides interdomain traversal to support packetized voice transmissions. A signaling message is received for establishing a voice call from a first endpoint associated with a first domain to a second endpoint associated with a second domain. The first endpoint queries a STUN (Simple Traversal of UDP (User Datagram Protocol)) server to determine information relating to a firewall and network address translator that the first endpoint is behind, and to log into a TURN (Traversal Using Relay NAT (Network Address Translation)) server configured to establish a media path between the first endpoint and the second endpoint. A first proxy server serving the first endpoint communicates with an ENUM (Electronic Number) server to convert a directory number corresponding to the second endpoint to a network address. The first proxy server communicates with a second proxy server serving the second endpoint to establish the voice call. The STUN server, the TURN server and the ENUM server are maintained by service provider. The first endpoint is authenticated to permit exchange of a media stream over the media path. The media stream is relayed, if the first endpoint is successfully authenticated.