2602 results about "Circuit switching" patented technology

A mechanism for providing a connection from an IP-based network to a circuit-switched network, such as a GSM network is disclosed. A temporary routing number for the circuit-switched network, such as an E.164 number, is delivered to a user terminal, and a circuit-switched call leg is established from the user terminal to the IP-based network using the routing number. Thereby, IMS-services are provided for end users which are located in the radio access network not having sufficient QoS required for voice over IP. In the example of a conference call service, a request for a conference call may forwarded via a data channel or data path to an application server which provides that conference call service. The application server then selects a conference routing number and returns the routing number to the conference host terminal via the data channel. Using the received conference routing number, the conference host terminal can then set up a circuit-switched connection as a call leg of the conference call.

A system and method for delivering increased speed, security, and intelligence to wireline and wireless systems. The present invention includes a new generation Fast Circuit Switch (packet / circuit) Communication processors and platform which enables a new Internet Exchange Networking Processor Architecture at the edge and core of every communication system, for next generation Web Operating System or Environment (WOE) to operate on with emphasis of a non-local processor or networking processor with remote web computing capabilities.

An approach provides interdomain traversal to support packetized voice transmissions. A centralized data store, maintained by a service provider, stores one or more user identifiers and an associated directory number. The centralized data store also stores routing information including one or more communication paths corresponding to the user identifier, wherein the routing information includes a data path or a circuit-switched path for establishing a call to the user. In response to a request for establishing the call to the directory number, the data store retrieves the routing information for use to establish the call.

A system and method for continuous voice calls when a user switches between packet data and circuit switched access networks. In one example embodiment, the present innovations include an interworking system that supports voice call continuity for a user that moves between IP-CAN and CS networks (e.g., PSTN or GSM). In one example embodiment, the present innovations comprise a voice call continuity application server (VCC-AS) that serves as an anchor point for a voice call (i.e., it is the node from which a handover is initiated) and controls and handles voice calls to and from the user equipment (UE) regardless of the access network.

A communication system providing telephony communication across combined circuit switched and packet switched networks, such as a telephone network and the Internet, which are connectable to terminals, such as telephones and computers, for selective communication therebetween. The communication system includes an authorization and account control object in the packet switched network, multiple gateways between the circuit switched and packet switched networks providing controlled connectivity between those networks, and an information retrieval object in the packet switched network, wherein the authorization and account control object maintains a substantially real time record of user accounts and usage, and the information and retrieval object provides substantially real time retrieval of selected information from the authorization and account control object. The retrieval object provides on demand to terminals which provide authentication for access to an identified account information regarding that account. The information regarding the account is substantially real time information including information with respect to communications in progress which are chargeable to the account which has been authenticated. The authorization and account control object is preferably a unitary logical object having distributed instances thereof handling multitudinous accounts of widely separated terminals. The retrieval object provides isolation of the authorization and account control object permitting simultaneous multitasking by the authorization and account control object and the retrieval object respectively.

An integrated radio telecommunications network which integrates an ANSI-41 circuit switched network and a General Packet Radio Service (GPRS) packet data network to support a mobile station which operates in both the ANSI-41 network and the GPRS network. An interworking function interfaces a mobile switching center (MSC) in the ANSI-41 network with a serving GPRS switching node (SGSN) in the GPRS network by mapping circuit switched signaling utilized by the MSC into GPRS packet switched signaling utilized by the SGSN, and mapping GPRS packet switched signaling into circuit switched signaling. An interworking GPRS base station controller interfaces the SGSN with a GPRS / ANSI-136 base station which supports both ANSI-136 operations and GPRS operations. The interworking GPRS base station controller adapts the traffic signaling format utilized by the SGSN into an air interface traffic signaling format utilized by the GPRS / ANSI-136 base station. An authentication center interface passes the authentication state of the mobile station between an ANSI-41 home location register / authentication center (HLR / AC) in the ANSI-41 network, and a GPRS home location register / authentication center (HLR / AUC) in the GPRS network.

A communication system providing telephony communication across combined circuit switched and packet switched networks, such as a telephone network and the Internet, which are connectable to terminals, such as telephones and computers, for selective communication therebetween. The communication system includes an authorization and account control object in the packet switched network, multiple gateways between the circuit switched and packet switched networks providing controlled connectivity between those networks, and an information retrieval object in the packet switched network, wherein the authorization and account control object maintains a substantially real time record of user accounts and usage, and the information and retrieval object provides substantially real time retrieval of selected information from the authorization and account control object. The retrieval object provides on demand to terminals which provide authentication for access to an identified account information regarding that account. The information regarding the account is substantially real time information including information with respect to communications in progress, which are chargeable to the account which has been authenticated. The authorization and account control object is preferably a unitary logical object having distributed instances thereof handling multitudinous accounts of widely separated terminals. The retrieval object provides isolation of the authorization and account control object permitting simultaneous multitasking by the authorization and account control object and the retrieval object respectively.

A hybrid Media Gateway Control Function (MGCF) implemented in a 3G wireless telecommunications network that provides access to multimedia services and IP networks for a mobile terminal operating in a circuit-switched (CS) mode. The hybrid MGCF includes a CS-specific signaling mechanism that exchanges CS-specific control signaling with a radio access network (RAN) serving the mobile terminal, and a SIP signaling mechanism that exchanges SIP control signaling with a Call State Control Function (CSCF) that accesses multimedia services for the mobile terminal. A converter in the hybrid MGCF converts the CS-specific control signaling into SIP control signaling, and sends the SIP signaling to the SIP signaling mechanism. A switching control function within the hybrid MGCF controls a Media Gateway (MGW) to route media payload from the RAN to destinations such as multimedia IP networks.

The invention provides unique architectures and techniques for routing redundancy in a data switch configured to use label switching. Multiple label switch controllers (LSCs) each operate concurrently but independently of each other to provide routes through a data switching mechanism. Preferred embodiments provide a plurality of LSCs offering MPLS capabilities coupled to a single switch, such as an ATM switch. The similarly configured LSCs each can concurrently support a route for data (e.g., labeled ATM cells) within the data switching mechanism in parallel, thereby providing the ability to support redundant and multiple parallel data networks. The configuration is called a label switch router (LSR). A fully-meshed embodiment allows selected routes to share bandwidth on ports, while a fully parallel embodiment provides separate ports for selected routes. Since each LSC provides parallel routes with the other LSCs in an LSR, a communications between an LSR and a label edge router (LER) can use multipath routing to concurrently distribute data equally across the parallel routes for each destination. Alternatively, unipath routing techniques can select one route for use for each destination from the available routes concurrently offered by each LSC. In the event of a failure of one of the LSCs, multipath routing implementations can exclude transmission of data onto the failed network, while continuing to use the other parallel networks supported by non-failed LSCs in a concurrent manner. Alternatively, if a failure occurs with unipath routing, a new route offered by another LSC can be selected for data transfers. In either case, the LSC that fails does not need to provide state or connection information to the LSCs that operate subsequently to the failure, since they are already configured in parallel to support the same route. Upon an LSC failure, switch resources such as bandwidth that were used by the failed LSC are made available to the remaining non-failed LSCs. The design allows failures are handled gracefully without diminished network capacity or data loss resulting in a highly reliable routing capability provided within connection-based or circuit-switched networks.

An approach to abstracting the circuit switched nature of the public switched telephone network (PSTN) by using VoIP to provide voice actuated services is disclosed. By carrying a telephone call using VoIP technology for a short distance (frequently within a server room) significant benefits to call handling and capacity management can be obtained. Specifically, a PSTN-to-IP gateway is used to receive (and place) calls over the PSTN and route those calls internally to servers over an IP network in a packet switched format. A number of computer systems can receive and handle the calls in the IP format, including: translating the packets into an audio format suitable for speech recognition and creating suitable packets from computer sound files for transmission back over the PSTN.

A method for implementing message service interworking is provided. The method includes: receiving, by a message service interworking module serving a receiver, an instant message sent by a sender; selecting, by the message service interworking module, a circuit switched domain (CS domain) or packet switched domain (PS domain) as a routing network; selecting, by the message service interworking module, a routing entity in the conventional CS domain or PS domain; and converting, by the message service interworking module, the instant message into a short message, and sending the short message to the receiver through the selected routing entity. A system and a message service interworking module for implementing message service interworking are also provided.

In a method of routing a short message with high or low priority from a service centre to a mobile station in a public land mobile network providing both packet data service and circuit switched service, a choice is made, in advance, as to whether the short meassage should be received by the mobile station either via a specific one of the services or via any of the services. Based upon said choice in step, the priority of the short message sent from the service centre, and an indication of whether the mobile station is reachable via one, both or none of the services, a route via one of the services, a route via both services or no route at all is selected. If a route via one of the services is selected, the short message is routed in accordance with the selected route. If a route via both services is selected, the route via the service having a higher preference than the other service is selected, and the short message is routed in accordance with the route via said service having the higher preference. If the routing of the short message to the mobile station is unsuccessful via the route via said service having the higher preference, the short message is routed in accordance with the route via said other service having lower preference.

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 ultra-low latency optical router with a peta-bit-per-second total aggregate switching bandwidth, that will scale to a total connectivity of 1000 by 1000, and beyond by modular upgrades, that utilizes advanced optical technologies to achieve such high capacity with two to three orders of magnitude less volume and power requirements than the electrical router counter part, that serves as a universal engine to other optical routers being developed by vendors and researchers today, that can function in the context of circuit-switching, flow-switching, burst-switching, and packet-switching, that uses advanced wavelength conversion technology to effectively achieve three methods of contention resolution in the router: deflection in wavelength, deflection in space, and buffering in time, and that interfaces a local network to the Supernet.

A system, apparatus and method for establishing circuit-switched (CS) communications in packet-switched (PS) multimedia networks such as IMS, and providing services via the PS networks to CS domain users. A dialog is established between terminals through the PS multimedia network. A service is provided to at least one of the terminals by way of the dialog. CS bearer information, including an indication that a communication flow is requested via a CS network, is communicated between the terminals by way of the dialog. A communication flow via the CS network is effected between the terminals as directed by the CS bearer information. IMS or other PS multimedia network services can thus be provided to users otherwise communicating via the CS-domain.

A unified messaging system, method and user interface is provided for a handheld mobile communication device. The method may include the following steps: (a) providing a unified event listing display comprising: a plurality of summary descriptors, each summary descriptor having one or more information elements to identify the event associated with the summary descriptor; (b) selecting one of the plurality of summary descriptors; (c) displaying a voice mail interface associated with the selected summary descriptor, wherein a plurality of voice mail actions are displayed on the interface; (d) selecting one of the plurality of voice mail actions; (e) communicating a voice mail command associated with the selected voice mail action to a unified messaging server via a wireless data communication network; (f) receiving the voice mail command at the unified messaging server; (g) executing an action associated with the received voice mail command at the unified messaging server; (h) establishing a circuit-switched communication connection to the mobile device from a PBX system associated with the unified messaging server; and (i) performing an action corresponding to the received voice mail command through the established circuit-switched communication connection.

A system and method in a wireless telecommunication network for placing on hold an ongoing circuit-switched voice call between a first party and a second party, and conducting a packet-switched data session between the second party and a third party. An enhanced Gs interface between a Serving GPRS Support Node (SGSN) in a packet-switched network and a Mobile Switching Center (MSC) in a circuit-switched network enables messages to be passed that enable the second party to place the first party on hold and either accept an incoming data session from the third party or originate a data session to the third party. When the data session is completed, the MSC is notified, and the voice call is resumed between the first party and the second party.

A system and method of providing a prepaid subscriber service to a mobile subscriber in an integrated wireless telecommunications network having a circuit-switched portion and a General Packet Radio Service (GPRS) packet-switched portion. A prepaid subscriber class (PPSC) is stored in a home location register (HLR), and the PPSC is sent from the HLR to a serving mobile switching center (MSC) when the subscriber registers in the circuit-switched portion of the network. The PPSC is sent from the HLR to a serving GPRS support node (SGSN) when the subscriber registers in the packet-switched portion of the network. Also, the PPSC may be sent from the SGSN to a Gateway GPRS Support Node (GGSN) in order to indicate that the subscriber is a prepaid subscriber. When the mobile subscriber begins a packet-switched data session, the SGSN, GGSN, or both periodically send partial call data records (CDRs) to a prepaid center (PPC). When the mobile subscriber begins a circuit-switched call, the MSC periodically sends partial CDRs to the PPC. The PPC calculates in near real time, a new account balance for the prepaid subscriber. The current call is disconnected, and prepaid services are stopped when the account balance is reduced to zero.

An efficient interface for service exchange is provided between a circuit-switched communications network and a domain naming system (DNS) in a packet-switched communications network. A node in the circuit-switched communications network receives from a first entity a request for a first service involving a second entity associated with a second entity identifier. A message is sent from the circuit-switched network node to a DNS server in the packet-switched network requesting a second service related to the second entity identifier. The result of the second service from the DNS server is used in providing the first service.

An integrated radio telecommunications network which integrates an ANSI-41 circuit switched network and a General Packet Radio Service (GPRS) packet data network to support a mobile station which operates in both the ANSI-41 network and the GPRS network. An interworking function interfaces a mobile switching center (MSC) in the ANSI-41 network with a serving GPRS switching node (SGSN) in the GPRS network by mapping circuit switched signaling utilized by the MSC into GPRS packet switched signaling utilized by the SGSN, and mapping GPRS packet switched signaling into circuit switched signaling. An interworking GPRS base station controller interfaces the SGSN with a GPRS / ANSI-136 base station which supports both ANSI-136 operations and GPRS operations. The interworking GPRS base station controller adapts the traffic signaling format utilized by the SGSN into an air interface traffic signaling format utilized by the GPRS / ANSI-136 base station. An authentication center interface passes the authentication state of the mobile station between an ANSI-41 home location register / authentication center (HLR / AC) in the ANSI-41 network, and a GPRS home location register / authentication center (HLR / AUC) in the GPRS network.

A method for transmitting control messages of a packet data network in a telecommunications system which includes at least one cell, in which the control messages are arranged to be transmitted on a circuit-switched broadcast control channel, a packet-switched broadcast control channel and a traffic channel. In addition, the telecommunications system includes at least one mobile station which supports the packet data network and is arranged to listen to at least one of the broadcast control channels. First control messages to be transmitted on a packet-switched channel of the packet data network are transmitted to the mobile stations in the cell encapsulated inside a second control message if the cell supports the transmission of the connection set-up parameters of the packet data network on both a circuit-switched broadcast control channel and a packet-switched broadcast control channel.

An existing communication occurring over a first type network may be communicated in high quality manner over another network when the quality of service of the first type network deteriorates. A real-time communication, such as a telephone call or other streaming data, may be automatically switched between various communication paths based on the quality of service of one of the paths. The communication paths may be internet protocol paths, circuit switched paths or other communication paths that support real-time communication of data.

A signal processing system which discriminates between voice signals and data signals modulated by a voiceband carrier. The signal processing system includes a voice exchange, a data exchange and a call discriminator. The voice exchange is capable of exchanging voice signals between a circuit switched network and a packet based network. The signal processing system also includes a data exchange capable of exchanging data signals modulated by a voiceband carrier on the circuit switched network with unmodulated data signal packets on the packet based network. The data exchange is performed by demodulating data signals from the circuit switched network for transmission on the packet based network, and re-modulating data signal packets from the packet based network for transmission on the circuit switched network. The call discriminator is used to selectively enable the voice exchange and data exchange.

Some embodiments of the invention provide configurable integrated circuit (IC) that has a first interface rate for exchanging signals with a circuit outside of the configurable IC. The configurable IC has an array of configurable circuits. The array includes several configurable logic and interconnect circuits. Each configurable logic circuit can configurably perform a set of functions. The configurable interconnect circuits can configurably couple the logic circuits. At least several of the configurable circuits can be reconfigured faster than the first rate.

A communication system is provided that implements an inter-technology SRVCC handoff without the need for an SRVCC indicator. A user equipment (UE) establishes a communication session that comprises a voice component in a packet data network. In response to determining to handoff the session to a target network, the communication system determines that the session comprises a voice component based on a call-type identifier, preferably a QoS Class Identifier (QCI), that is associated with a voice call and further determines that a target network is a circuit switched network based on configuration information maintained in association with the target network. In response to determining that the session comprises a voice component, that the target network is a circuit switched network, and, based on a profile of the UE, that the UE is capable of operation in single radio mode, the communication system determines to implement a SRVCC handoff procedure.

A method of setting up a session between peer user terminals of a communication system, said session extending at least in part across a circuit switched access network. The method comprises transporting signalling to initiate said session between at least one of the peer user terminals and said communication system via an IP based packet switched access network using a call control protocol which is also used for setting up end-to-end packet switched sessions, and subsequently establishing said session based upon said signalling.

A method of billing a communication session between a user and a value-added service. A request is received from a user for a communication session, such as a circuit-switched call, a computer-network telephony call or a multimedia session, between the user and a value-added service. Information associated with a credit account is requested before the user is connected to the value-added service. The information associated with the credit account, such as credit card information, debit card information or checking account information, is received in real time. Credit account information, which includes the received information associated with the credit account and a predetermined amount that is to be charged to the credit account, is communicated to a payment authorization database, which can be located locally or remotely. Alternatively, the credit account information includes the received information associated with the credit account and a predetermined amount that is to be set aside in the credit account for the communication session. Payment authorization information associated with the credit account is received from the remote site before the user is connected to the value-added service. The user is connected to the value-added service when the payment authorization information is affirmative. A total charge for the communication session that is based on an actual time that the user is connected to the value-added service is calculated when the communication session is terminated. Lastly, session charge information associated with the communication session is transmitted to the remote site when the communication session is terminated, the session charge information including information for charging the credit account an amount representing a charge for the communication session.

The invention relates to an intelligent control system of an insulative aerial platform vehicle, an aerial platform vehicle with the intelligent control system and a control method thereof. The intelligent control system of the aerial platform vehicle comprises a wireless remote control device, an upper arm length sensor, an upper and lower arm angle encoder, a turntable rotating angle encoder, a leg grounding detection travel switch, a horizontal extending detection travel switch, a controller, a lower arm angle sensor, a lower arm length sensor, an arm bracket travel switch, a program download port, a liquid crystal screen, a quintuple proportional valve group, an oil circuit switching valve, a turntable operating switch, a leg action switch and a turntable potentiometer handle. A TTC200 controller is adopted as the controller of the aerial work platform, a wireless remote control handle is arranged at the insulative bucket part, the turntable is provided with the potentiometer handle to control the mechanism movement; the setting and the adjustment of various important parameters in the controller are completed through displaying the work condition of the vehicle body on the LCD display and debugging the software. The method has wide operational range, safety, reliability and high automatization through controlling the work condition of the entire vehicle by the controller.

A system for providing wireline telephone services to wireless subscribers utilizing a packet data network 100. The system includes a base station controller (BSC) 210 a base station controller gateway (BGW) 200 for providing client based services to mobile subscribers and providing protocol mapping between a mobile protocol and a packet data network protocol. The system further comprises a mobility gatekeeper (GK) 500 for managing network mobility services for each wireless call including the establishment of a call control path and a speech path between said base station controller and a serving end office telephone point. The system also comprises a end office gateway (EOGW) 300 for providing protocol conversion between the packet data network protocol and the end office point data protocol such that a wireless subscriber has access to all wireline services provided by the end office point. A mobile switching center (MSC) 410 and mobile switching center gateway (MGW) 400 are included to facilitate inter-system call handoffs into an existing circuit-switched wireless telephony network.

In a mobile communication system including a circuit-switched (CS) mobile communications network, a packet-switched (PS) mobile communications network and an interworking function adapted to enable a signaling exchange between the CS and PS mobile communications network, a method of providing combinational CS+PS services to mobile users includes receiving, at a serving network entity in the PS mobile communications network, a user request issued from a first user on the PS mobile communications network, the user request relating to combinational services and having the serving network entity managing the received request, wherein the managing of the received request includes controlling an establishment of a session in the CS mobile communication network through the interworking function.