摘要:
A method for establishing a multimedia connection with quality of service (QoS) using an ATM backbone for ISDN network or IP network calls. QoS makes IP over ATM useful for video and audio conferencing by ensuring a minimum packet error rate at acceptable bit transmission rates. The invention will utilize the H.323 annex C protocol to transmit IP gateway transmissions through an ATM backbone network. This invention enables H.320 endpoints having a connection to an ATM network to send QoS communications to other endpoints. When call setup is initiated between two endpoints, an ISDN (or IP) call is sent to a gateway. The gateway will utilize a network gatekeeper to route the call to the addressed endpoint's corresponding gateway. When a route is established, the call will be converted to an H.323 annex C protocol transmission and sent through the ATM backbone to the destination gateway. At the destination gateway, the call will be converted to another protocol (as necessary) for delivery to the destination endpoint.
摘要翻译:一种使用ATM骨干网为ISDN网络或IP网络呼叫建立具有服务质量(QoS)的多媒体连接的方法。 通过确保在可接受的比特传输速率下的最小分组错误率,QoS使IP over ATM对视频和音频会议有用。 本发明将利用H.323附件C协议通过ATM骨干网发送IP网关传输。 本发明使具有与ATM网络连接的H.320端点向其他端点发送QoS通信。 当在两个端点之间启动呼叫建立时,ISDN(或IP)呼叫被发送到网关。 网关将利用网络守门员将呼叫路由到寻址端点的相应网关。 当建立路由时,呼叫将转换为H.323附件C协议传输,并通过ATM骨干网发送到目的网关。 在目的地网关,呼叫将被转换为另一个协议(如有必要)传送到目标端点。
摘要:
Data packets are routed in at least one packet-switched network with a number of communication networks connected to the packet-switched network via gateways. Location data to be transmitted between communication networks is routed based on the communication protocols used in the respective communication networks.
摘要:
A method of adapting the characteristics of a call server to optimise the call server's performance and usage of available network resources. A network management element determines the impact of any changes in the condition of the network on the call server and provides an indication to the call server which resets at least one characteristic of the call server to optimise the call server's performance.
摘要:
The present invention is a system, apparatus and method for voice over Internet protocol telephone (VoIP) calling using enhanced SS7 signaling packets and may include localized time slot interchanging. A system embodiment of the invention includes originating and terminating VoIP gateway switches in communication with the public switched telephone network (PSTN) and also in communication with an IP-based packet network, such as the Internet, for transmitting packets. The VoIP gateway switches are configured to exchange enhanced SS7 signaling packets over the IP-based packet network for setting up and tearing down VoIP telephone calls. A method of placing a VoIP telephone call in accordance with the present invention includes initiating a telephone call to a destination and connecting the telephone call to an originating VoIP gateway switch using enhanced SS7 signaling packets. The method also includes determining a preferred route from the originating VoIP gateway switch to the destination through an IP-based packet network and through a terminating VoIP gateway switch nearest said destination, and setting up two-way communication through the preferred route using the IP-based packet network using enhanced SS7 signaling packets.
摘要:
A point-of-presence (POP) call center system capable of answering, servicing, queuing and routing of calls at local points of presence to reduce communications costs and enhance operational efficiency for inbound call centers. The POP call center system includes a set of point-of-presence call center gateways distributed at points of presence close to the point of call origination that are connected by a virtual private network to premises call center gateways at business locations where the call centers reside.
摘要:
Methods and apparatus of managing a communication system, wherein a decision regarding a level of activity at a first end is made based at least in part on the level of activity at the second end. In one embodiment, the energy level of a first-end audio signal is measured. The first end is declared voice-active if the first-end energy level is greater than or equal to a first threshold value. The first end is declared voice-inactive if the first-end energy level is less than the first threshold value. To determine the value of the first threshold value, the energy level of a second-end audio signal is measured. If the second-end energy level is greater than or equal to a second threshold value, the second end is declared voice-active, in which case the first threshold is maintained at a relatively high level. If the second-end energy level is less than the second threshold value, the second end is declared voice-inactive, in which case the first threshold is maintained at a relatively lower level.
摘要:
A method of and system for telecommunication are disclosed, in which a service provider establishes a point of presence with a plurality of telephone numbers in at least one first vicinity. The service provider receives telephone calls to those numbers and relays each such call over a wide-area network (WAN) to a recipient in a second vicinity to which the telephone number in question is not local. Each said telephone number is assigned to a specific recipient, and each call is directed to its recipient on the basis of the telephone number to which it was made, so that each number can be presented to potential callers as if it were a local number in the first vicinity for the recipient, even though the recipient may have no physical presence in the first vicinity. The recipient thus has a nullVirtual Telephone Numbernull (VTN) in the first vicinity. The caller need merely telephone the local number in his or her own vicinity, and is connected to the recipient without any further action or effort on the caller's part.
摘要:
A method for transmitting voice data over various types of networks wherein user data are transmitted via a transmission link of a circuit-switched network and are distributed to data packets and forwarded via a packet transmission network if the user data are typical of voice transmission. If, in contrast, the user data are typical of silence intervals, no user data are forwarded via the packet transmission network. The type of connection is determined in a signaling unit.
摘要:
A system for routing voice telephone calls over IP networks as opposed to traditional switched circuit networks. The voice communications during the telephone call are packaged as digital data and access the Internet through gateways. The system supports the linking of a source gateway in a first clearinghouse to a destination gateway in a second clearinghouse. The system further supports the selection of a destination gateway based on factors such as cost, speed of routing, and transmission quality of the voice data. The components of the system are arranged so as to minimize the number of signals sent between clearinghouses in identifying the optimal destination gateway.
摘要:
A method and a system for routing data calls in which an incoming data call having a destination number is received. The data call is routed to a first destination over a circuit-switched telecommunications network based on the destination number for the data call. Transaction information is then sent to the first destination. Alternatively, the incoming data call is received at an input port. The incoming data call is associated with an automatic number identification and the input port is associated with an input port identification. The automatic number identification is stored in a database in association with the input port identification. A transfer message for the data call is received from the first destination. The transfer message contains information relating to an address for a second destination. The information relating to the address for the second destination is stored in the database in association with the automatic number identification and input port identification for the data call. The data call is disconnected from the first destination, and the data call is routed to the second destination over the circuit-switched telecommunications network.