Method for transmitting data in a telecommunications network and switch for implementing said method
DC CAFCFirst Claim
1. A method for transferring data selectively by line switching or by packet switching from a first switch to a second switch, the first switch being part of or having access to a line-switching network, comprising:
- a) establishing a connection through the line-switching network from the first switch to an access point of a packet-switching network;
b) transferring data through said connection from the first switch to the access point of packet-switching network;
c) packetizing the data into data packets if the data do not yet exist as data packets, and transferring the data packets through the packet-switching network from the access point to the second switch;
d) checking whether a control signal exists for changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching connection from the first switch to the second switch through the line-switching network, wherein the control signal is produced by the user of an end terminal connected to either of said first switch or said second switch;
e) establishing a connection from the first switch to the second switch through the line-switching network in response to said control signal, if such a line-switching connection is not yet present; and
f) changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching data transfer over the line-switching connection from the first switch to the second switch in response to said control signal and transferring data over the line switching connection from the first switch to the second switch.
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Reexamination
Accused Products
Abstract
A method for transferring data from a first switch to a second switch selectively by line-switching or by packet-switching as well as to a switch for carrying out the method. Data packets are thereby first transferred packet-switched through a packet-switching network to the second switch. With the presence of a corresponding control signal a line-switching connection is established from the first switch to the second switch and the data are then transferred through this connection.
Where applicable a renewed change over to a packet-switching transfer is carried out. A flexible packet-switching or line-switching data transfer linked with dynamic costs between the junctions of a telecommunications network is enabled.
51 Citations
125 Claims
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1. A method for transferring data selectively by line switching or by packet switching from a first switch to a second switch, the first switch being part of or having access to a line-switching network, comprising:
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a) establishing a connection through the line-switching network from the first switch to an access point of a packet-switching network; b) transferring data through said connection from the first switch to the access point of packet-switching network; c) packetizing the data into data packets if the data do not yet exist as data packets, and transferring the data packets through the packet-switching network from the access point to the second switch; d) checking whether a control signal exists for changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching connection from the first switch to the second switch through the line-switching network, wherein the control signal is produced by the user of an end terminal connected to either of said first switch or said second switch; e) establishing a connection from the first switch to the second switch through the line-switching network in response to said control signal, if such a line-switching connection is not yet present; and f) changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching data transfer over the line-switching connection from the first switch to the second switch in response to said control signal and transferring data over the line switching connection from the first switch to the second switch. - View Dependent Claims (3, 4, 5, 6, 7, 8, 10, 11, 13, 15, 16, 17, 18, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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2. A method for transferring data selectively by line switching or by packet switching from a first switch to a second switch, the first switch being part of or having access to a line-switching network and a packet switching network, comprising:
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a) packetizing the data into data packets in the first switch if the data does not yet exist as data packets; b) transferring the data packets from the first switch through the packet-switching network to the second switch; c) checking whether a control signal exists for changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching connection to the second switch, wherein the control signal is produced by the user of an end terminal connection to either said first switch or to said second switch; d) establishing a connection from the first switch through the line-switching network to the second switch in response to said control signal, if such a line-switching connection is not yet present; and e) changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching data transfer in response to said control signal and transferring data over the line switching connection to the second switch. - View Dependent Claims (9, 12, 14, 19)
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34. Switching apparatus for selectively routing a telephone call from a first end terminal to a second end terminal, comprising:
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a device that provides access to a packet switching network through which data can be sent for delivery to the second end terminal; means for transferring first data of the telephone call originated by the first end terminal through the packet switching network for delivery to the second end terminal; a device for establishing a connection to a line-switching network through which data can be sent for delivery to the second end terminal; means for transferring second data of the telephone call originated by the first end terminal over the connection through the line-switching network for delivery to the second end terminal; and means responsive to a control signal for changing-over from a packet-switching mode of transfer of the first data of the telephone call to a line-switching mode of transfer of the second data of the telephone call without interruption of a call set-up procedure, wherein said control signal is produced by the user of the first end terminal.
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35. A method for transferring data selectively by line-switching or by packet switching from a first switch to a second switch, the first switch being part of or having access to a line-switching network, comprising:
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a) establishing a connection through the line-switching network from the first switch to an access point of a packet-switching network; b) transferring data through said connection from the first switch to the access point of the packet-switching network; c) packetizing the data into data packets if the data do not yet exist as data packets, and transferring the data packets through the packet-switching network from the access point to the second switch; d) checking whether a control signal exists for changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching connection from the first switch to the second switch, wherein the control signal is produced by a network management system; e) establishing a line-switching connection from the first switch to the second switch through the line-switching network in response to said control signal, if such a line-switching connection is not yet present; and f) changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching data transfer over the line-switching connection from the first switch to the second switch in response to said control signal and transferring data over the line switching connection from the first switch to the second switch. - View Dependent Claims (37, 38, 39, 40, 41, 42, 44, 45, 47, 49, 50, 51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67)
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36. A method for transferring data selectively by line switching or by packet switching from a first switch to a second switch, the first switch being part of or having access to a line-switching network and a packet switching network, comprising:
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a) packetizing the data into data packets in the first switch if the data does not yet exist as data packets; b) transferring the data packets from the first switch through the packet-switching network to the second switch; c) checking whether a control signal exists for changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching connection to the second switch, wherein the control signal is produced by a network management system; d) establishing the line-switching connection through the line-switching network to the second switch in response to said control signal, if the line-switching connection is not yet present; and e) changing-over from the packet-switching data transfer of the data packets through the packet switching network to a line-switching data transfer in response to said control signal and transferring data over the line switching connection to the second switch. - View Dependent Claims (43, 46, 48, 53)
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68. Switching apparatus for selectively routing a telephone call from a first end terminal to a second end terminal, comprising:
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a device that provides access to a packet switching network through which data can be sent for delivery to the second end terminal; means for transferring first data of the telephone call originated by the first terminal through the packet switching network for delivery to the second end terminal; a device for establishing a connection to a line-switching network through which data can be sent for delivery to the second end terminal; means for transferring second data of the telephone call originated by the first terminal over the connection through the line-switching network for delivery to the second end terminal; and means responsive to a control signal for changing-over from a packet-switching mode of transfer of the first data of the telephone call to a line-switching mode of transfer of the second data of the telephone call without interruption of a call-up procedure, wherein said control signal is produced by a network management system.
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69. Switching apparatus for selectively routing a telephone call from a first end terminal to a second end terminal, comprising:
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means for establishing a connection to a packet switching network through which data can be sent to the second end terminal; means for transferring first data of the telephone call originated by the first end terminal over the connection through the packet switching network for delivery to the second end terminal, means for establishing a connection to a line-switching network through which data can be sent for delivery to the second end terminal; means for transferring second data of the telephone call originated by first end terminal over the connection through the line-switching network for delivery to the second end terminal; and means responsive to a control signal for changing-over from a packet-switching mode of transfer of the first data of the telephone call to a line-switching mode of transfer of the second data of the telephone call without interruption of a call set-up procedure. - View Dependent Claims (70, 71, 72, 73, 74, 75, 76)
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77. A method of selectively routing a telephone call from a first end terminal to a second end terminal, comprising:
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establishing access of said first end terminal to a packet switching network through which data can be sent for delivery to the second end terminal; transferring first data of the telephone call originated by the first end terminal over the packet switching network for delivery to the second end terminal, responding to a control signal for changing-over from a packet-switching mode of transfer of the first data of the telephone call to a line-switching mode of transfer of second data of the telephone call originated by the first end terminal without interruption of a call set-up procedure, by establishing a connection from said first end terminal to a line-switching network through which data can be sent for delivery to the second end terminal and establishing said line-switching mode of transfer of the second data of the telephone call over the connection through the line-switching network for delivery to the second end terminal. - View Dependent Claims (78, 79, 80, 81, 82, 83)
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84. Switching apparatus for switching data packets from multiple origin end terminals, the data packets containing headers including information identifying respective origin and destination end terminals, the switching apparatus comprising:
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a packet switching device for transferring data packets through a packet switching network through which data can be sent for delivery to destination end terminals; a line switching device for establishing line connections through a line-switching network through which data can be sent to the destination end terminals; and a control device connected to the packet switching device and the line switching device for directing the data packets from the multiple origin end terminals to either the packet switching device or to the line switching device, the control device being responsive to the data packet headers for controlling the packet switching device and the line switching device for establishing and maintaining respective communications connections for data transfer with real-time properties between origin end terminals and destination end terminals, the control device also being responsive to a control signal for changing-over from packet-switching transfer of first data of a communications connection to line-switching transfer of second data of the communication connection without interruption of the communications connection. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91)
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92. A method of routing data packets from multiple origin end terminal in a data network, the data packets containing headers including information identifying respective origin and destination end terminals in the data network, the method comprising:
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directing the data packets from the multiple end terminals to either a packet switching device or to a line switching device by inspecting the data packet headers, and in response to the data packet headers, establishing and maintaining respective communications connections for data transfer with real-time properties between origin end terminals and destination end terminals, and responding to a control signal by changing-over from packet-switching transfer of first data of at least one of the communications connections over a packet-switching network to line-switching transfer of second data of said at least one of the communication connections over a line-switching network without interruption of said at least one of the communications connections. - View Dependent Claims (93, 94, 95, 96, 97, 98, 99)
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100. Switching apparatus for switching Internet Protocol (IP) data packets from multiple origin end terminals, the data packets containing headers including information identifying respective origin and destination end terminals, the switching apparatus comprising:
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an IP packet switching device for packet-switching transfer of data through the Internet for delivery to destination end terminals; a line switching device far establishing line connections through a public telephone network through which data can be sent to the destination end terminals; and a control device connected to the IP packet switching device and the line switching device for directing the IP data packets from the multiple origin end terminals to either the packet switching device or to the line switching device, the control device being responsive to the data packet headers for controlling the packet switching device and the line switching device for establishing and maintaining respective communication connections for data transfer with real-time properties between origin end terminals and destination end terminals, and the control device also being responsive to an overload in the Internet for automatically changing-over from packet-switching transfer of first data of a communications connection to line-switching transfer of second data of the communication connection without interruption of the communications connection when a data blockage occurs in the routing of data packets of the first data of the communications connection through the Internet. - View Dependent Claims (101, 102, 103, 104)
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105. A data switch apparatus, comprising:
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a data input; a packet switch having a connection to a packet switching network; a line switch having a connection to a line switching network; and a controller that receives data from said data input and transfers said data to either said packet switch or to said line switch in response to a control signal that is developed as a result of monitoring of quality of service of said packet switching network; and Wherein said controller further comprises a data packeting/unpacketing device for packetizing unpacketed data received at said data input to be transferred to said packet switch. - View Dependent Claims (106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117)
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118. A method of routing IP data packets from multiple origin end terminals in an IP data network, the IP data packets containing headers including information identifying respective origin and destination end terminals in the IP data network, the method comprising:
inspecting the IP data packet headers at a switch in the IP data network in order to establish a respective communications connection for IP data packets from at least one of the origin terminals to a destination end terminal in the IP network, the respective communications connection being initiated from the switch by packet switching of IP data packets from the switch, and ensuring that the respective communications connection has a desired bandwidth by changing over, from the packet switching of the IP data packets from the switch, to line switching of the IP data packets from said at least one of the origin end terminals to said destination end terminal, when it is found that the packet switching of the IP data packets from the switch does not have the desired bandwidth. - View Dependent Claims (119, 120, 121, 122, 123, 124, 125)
Specification