Method for transmitting data in a telecommunications network and switch for implementing said method

• US 8,175,083 B2
• Filed: 05/03/2011
• Issued: 05/08/2012
• Est. Priority Date: 10/07/1996
• Status: Expired due to Fees

• Current Assignee: Sigram Schindler Beteiligungsgesellschaft Mbh (Sigram Schindler, PhD)
• Original Assignee: Sigram Schindler Beteiligungsgesellschaft Mbh (Sigram Schindler, PhD)
• Inventors: Schindler, Sigram, Illg, Andreas, Ludtke, Karsten, Paetsch, Frank
• Primary Examiner(s): Qureshi, Afsar M.
• Application Number:
  US13/099,726
• Publication Number:
  US 20110206041A1
• Time in Patent Office: 371 Days
• Field of Search: 370252-469, 379/88.17, 379/90.01, 379/93.01, 379/207.13
• US Class Current: 370/352
• CPC Class Codes: H04L 12/6418 Hybrid transport
• CPC Class Codes: H04L 2012/6427 Subscriber Access Module; Concentrator; Group equipment
• CPC Class Codes: H04L 2012/6443 Network Node Interface, e.g. Routing, Path finding
• CPC Class Codes: H04L 2012/6472 Internet
• CPC Class Codes: H04L 2012/6475 N-ISDN, Public Switched Telephone Network [PSTN]
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 3/4228 in networks
• CPC Class Codes: H04M 7/0057 Services where the data services network provides a telephone service in addition or as an alternative, e.g. for backup purposes, to the telephone service provided by the telephone services network
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42
• CPC Class Codes: H04Q 11/0428 Integrated services digital network, i.e. systems for transmission of different types of digitised signals, e.g. speech, data, telecentral, television signals
• CPC Class Codes: H04Q 2213/13031 Pulse code modulation, PCM
• CPC Class Codes: H04Q 2213/13174 Data transmission, file transfer
• CPC Class Codes: H04Q 2213/13175 Graphical user interface [GUI], WWW interface, visual indication
• CPC Class Codes: H04Q 2213/13196 Connection circuit/link/trunk/junction, bridge, router, gateway
• CPC Class Codes: H04Q 2213/13209 ISDN
• CPC Class Codes: H04Q 2213/13292 Time division multiplexing, TDM
• CPC Class Codes: H04Q 2213/13298 Local loop systems, access network
• CPC Class Codes: H04Q 2213/13389 LAN, internet
• CPC Class Codes: H04Q 3/002 Details

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 changeover 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.

Claims

1. Apparatus for routing data of a voice telephone call, comprising:

(a) an input device for receiving data of a voice telephone call from a first end terminal;

(b) an IP switch for forwarding data of said voice telephone call from said input device to a first network for packet-switched communication to a second end terminal, said first network being a connection-less, non-ISDN packet switching network;

(c) a line switch for forwarding data of said voice telephone call from said input device to a second network for line-switched communication to said second end terminal, said second network being independent of said first network; and

(d) a control device for selectively routing said data of said voice telephone call from said input device to said IP switch or said line switch after receiving data corresponding to a dialed number of said second end terminal;

said control device being operable to

(i) route first data of said voice telephone call to said IP switch;

(ii) monitor the bandwidth of an existing transfer of said first data of said voice telephone call to said second end terminal;

(iii) generate a change-over control signal during said existing transfer of said first data of said telephone call when said monitored bandwidth understeps or exceeds a certain bandwidth;

(iv) change over the routing of said existing transfer from said IP switch to said line switch without interrupting said voice telephone call; and

(v) route second data of said voice telephone call to said line switch as a result of said changing over of said routing.

2. Apparatus as set forth in claim 1, wherein said first data comprises speech data.

3. Apparatus as set forth in claim 1, wherein said input device comprises an interface for connecting a telephone to the apparatus.

4. Apparatus as set forth in claim 1, wherein said IP switch is operable to forward said data of a voice telephone call to a first external data link for accessing said first network and said line switch is operable to forward said data to a second external data link for accessing said second network.

5. Apparatus as set forth in claim 1, wherein said line switch is capable of establishing a connection to a second switch of said second network utilizing only the facilities of said second network.

6. Apparatus as set forth in claim 1, wherein said apparatus is capable of routing said data of said telephone call using a UDP-type protocol.

7. Apparatus as set forth in claim 1, wherein said control device is operable to release said change-over control signal, in a manner essentially independent of external influence or control, in the event of a time delay when forwarding IP data packets.

8. Apparatus as set forth in claim 1, wherein said control device is operable to monitor the bandwidth of said data transfer and, on understepping or exceeding a certain bandwidth or in the event of a time delay when forwarding IP data packets, is operable to release said change-over control signal, in a manner essentially independent of external influence or control.

9. Apparatus as set forth in claim 1, wherein said control device is capable of generating said change-over control signal without first receiving a request for line-switched communication of data from a source that is external to the apparatus.

10. Apparatus as set forth in claim 1, wherein said control device is capable of generating said change-over control signal without first receiving a packet header carrying a request for line-switched communication of data.

11. Apparatus as set forth in claim 1, wherein said control device is capable of generating said change-over control signal at any time while said data of a voice telephone call is being transferred by said apparatus.

12. Apparatus as set forth in claim 1, wherein said routing of said data of said voice telephone call does not affect how said control device routes data comprising any other telephone call between other end terminals which may be in existence at the time of generation of said change-over control signal.

13. A mobile communications device, comprising apparatus as set forth in claim 1.

14. Apparatus as set forth in claim 1, wherein said control device in a basic state routes first data of a telephone call to said IP switch.

15. Apparatus for routing data of a voice telephone call, comprising:

(a) an input device for receiving data of a voice telephone call from a first end terminal;

(b) an IP switch for forwarding data of said voice telephone call from said input device to a first network for packet-switched communication to a second end terminal, said first network being a connection-less, non-ISDN packet switching network;

(c) a line switch for forwarding data of said voice telephone call from said input device to a second network for line-switched communication to said second end terminal, said second network being independent of said first network; and

(d) a control device for selectively routing said data of said voice telephone call from said input device to said IP switch or said line switch after receiving data corresponding to a dialed number of said second end terminal;

said control device being operable to

(i) route first data of said voice telephone call to said IP switch;

(ii) monitor an existing transfer of said first data of said voice telephone call to said second end terminal for a time delay when forwarding IP data packets from said first end terminal;

(iii) generate a change-over control signal during said existing transfer of said first data of said telephone call when said time delay is determined to exceed a predetermined value;

(iv) change over the routing of said existing transfer from said IP switch to said line switch without interrupting said voice telephone call; and

(v) route second data of said voice telephone call to said line switch in response to said changing over of said routing.

16. Apparatus as set forth in claim 15, wherein said first data comprises speech data.

17. Apparatus as set forth in claim 15, wherein said input device comprises an interface for connecting a telephone to the apparatus.

18. Apparatus as set forth in claim 15, wherein said IP switch is operable to forward said data of a voice telephone call to a first external data link for accessing said first network and said line switch is operable to forward said data to a second external data link for accessing said second network.

19. Apparatus as set forth in claim 15, wherein said line switch is operable to establish a connection to a second switch of said second network utilizing the facilities of said second network.

20. Apparatus as set forth in claim 15, wherein said control device is capable of generating said change-over control signal without any retransmission of data already sent to said first network.

21. Apparatus as set forth in claim 15, wherein said control device is capable of generating said change-over control signal without first receiving a request for line-switched communication of data from a source that is external to the apparatus.

22. Apparatus as set forth in claim 15, wherein said control device is capable of generating said change-over control signal without first receiving a packet header carrying a request for line-switched communication of data.

23. Apparatus as set forth in claim 15, wherein said control device is capable of generating said change-over control signal at any time while said data of a voice telephone call is being transferred by said apparatus.

24. Apparatus as set forth in claim 15, wherein said routing of said data of said voice telephone call does not affect how said control device routes data comprising any other telephone call between other end terminals which may be in existence at the time of generation of said change-over control signal.

25. A mobile communications device, comprising apparatus as set forth in claim 15.

26. Apparatus as set forth in claim 15, wherein said control device in a basic state routes first data of a telephone call to said IP switch.