System for establishing and maintaining a connection
First Claim
1. An arrangement for establishing and maintaining a connection between communication devices via a data network, comprising:
- at least one server interfaced with the data network and data network terminals having network addresses, said server keeping a communication device register, a communication device and a terminal being arranged to establish a data transfer link between each other, whereinthe communication device is arranged to report by sending via said data transfer link an identifier, as well as to send a call via said data transfer link,the terminal is arranged to send to the server the identifier received from the communication device and at the same time a network address of the terminal, and to notify the communication device about a call received from the server,the server has the communication device register for storing identifiers of reported communication devices and network addresses of terminals for the purpose of finding out reachability of the communication devices,the server is arranged to send network address of the terminal to another terminal in order to establish a network connection between the terminals, andthe server is arranged to draw conclusions about relative locations of terminals for making the handover between the terminals during the connection between the communication devices, in which at least one communication device is a mobile terminal.
2 Assignments
0 Petitions
Accused Products
Abstract
An arrangement and method for establishing and maintaining a connection between users'"'"' communication devices via a public data network. Communication devices belonging to users of a system are terminals of a telecommunication network, say mobile phones, and, in addition, they are adapted to a link to a data network via a wireless transfer system. Interfaced with the data network there is at least one server that keeps a register of communication devices. A communication device brought near a data network terminal reports itself to the server using a device-specific identifier. This reporting message also contains network address of the terminal. When a connect request arrives from a communication device via a terminal, the server provides for necessary network connection if the called device specified in the connect request can be reached.
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Citations
22 Claims
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1. An arrangement for establishing and maintaining a connection between communication devices via a data network, comprising:
at least one server interfaced with the data network and data network terminals having network addresses, said server keeping a communication device register, a communication device and a terminal being arranged to establish a data transfer link between each other, wherein the communication device is arranged to report by sending via said data transfer link an identifier, as well as to send a call via said data transfer link, the terminal is arranged to send to the server the identifier received from the communication device and at the same time a network address of the terminal, and to notify the communication device about a call received from the server, the server has the communication device register for storing identifiers of reported communication devices and network addresses of terminals for the purpose of finding out reachability of the communication devices, the server is arranged to send network address of the terminal to another terminal in order to establish a network connection between the terminals, and the server is arranged to draw conclusions about relative locations of terminals for making the handover between the terminals during the connection between the communication devices, in which at least one communication device is a mobile terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for establishing and maintaining a connection between a first and a second communication device via a data network interfaced with at least one server keeping a register of communication devices, and terminals having network addresses, said first communication device has a data link to a first terminal, and in which method identifiers sent by the terminals, referring to users of the communication devices, and said network addresses of said terminals are stored in the server'"'"'s register, the method further comprising:
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a call addressed to the second communication device is sent from the first communication device to the first terminal, a connect request is sent from the first terminal to the server on the basis of said call, reachability of the second communication device is examined on the basis of information stored in the register of the server, the first and second terminals get each other'"'"'s network addresses through the at least one server if the second communication device can be reached through said second terminal, the call addressed to the second communication device is sent from the server to the second terminal, said call is further sent from the second terminal to the second communication device, an answer to the call is transferred from the second communication device to the first communication device via a route;
second terminal, data network, first terminal, first communication device, andrelative locations of terminals are determined by the at least one server for making a handover between terminals during the connection between the communication devices. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification