Network protocol conversion module within a telecommunications system

• US 5,852,660 A
• Filed: 04/10/1996
• Issued: 12/22/1998
• Est. Priority Date: 04/10/1996
• Status: Expired due to Term

• Current Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Original Assignee: Ericsson, Inc. (Telefonaktiebolaget LM Ericsson)
• Inventors: Lindquist, Jan, Feltner, Charles M.
• Primary Examiner(s): Hong, Harry S.
• Application Number:
  US08/630,355
• Time in Patent Office: 986 Days
• Field of Search: 379/34, 379/207, 379/219, 379/220, 379/221, 379/229, 379/230, 370/401, 370/466, 370/467
• US Class Current: 379/230
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04Q 3/0025 Provisions for signalling

Abstract

Signaling Connection Control Part (SCCP) parameters within a signal generated within a first SS7 telecommunications network are converted into values and formats acceptable by a second SS7 telecommunications network by a converter residing within a gateway Signal Transfer Point (STP). Such a converter enables signals containing application layer data to be transported across two different SS7 telecommunications networks that are otherwise incompatible.

Claims

1. A system for communicating a signal containing application layer data between a first American National Standards Institute (ANSI) based Signaling System No. 7 (SS7) network and a second Consultative Committee on International Telegraph and Telephone (CCITT) based SS7 network, said system comprising:

a gateway Signal Transfer Point (STP) connecting said first SS7 network with said second SS7 network, said gateway STP comprising;

a Signaling Connection Control Part (SCCP) layer module; and

a conversion module interfaced with said SCCP layer module, said conversion module;

receiving said signal from one of said SS7 networks; and

converting SCCP parameter addressing data within said signal received from said one of said SS7 network between ANSI protocol and CCITT protocol in order to be recognizable by the other SS7 network.

2. The system of claim 1 wherein said conversion module converts between SCCP parameters recognizable by said ANSI based SS7 telecommunications network and SCCP parameters recognizable by said CCITT based SS7 telecommunications network.

3. The system of claim 2 wherein said SCCP parameters received from said ANSI based SS7 telecommunications network that are convertible by said conversion module are selected from a group of:

a Subsystem Number (SSN);

a Signaling Point Code (SPC);

a Translation Type (TT);

a Global Title Series (GTS);

or combination thereof.

4. The system of claim 2 wherein said SCCP parameters received from said CCITT based SS7 telecommunications network that are convertible by said conversion module are selected from a group of:

a Subsystem Number (SSN);

a Signaling Point Code (SPC);

a Translation Type (TT);

a Numbering Plan (NP);

a Nature of Address indicator (NA);

a Global Title Series (GTS);

or combination thereof.

5. The system of claim 1 wherein said conversion module converts between a Translation Type (TT) and Global Title Series (GTS) values recognizable by said ANSI based SS7 telecommunications network and a TT, Numbering Plan (NP), Nature of Address indicator (NA), and GTS values recognizable by said CCITT based SS7 telecommunications network.

6. The system of claim 1 wherein said conversion module converts between a Signaling Point Code (SPC) and Subsystem Number (SSN) values recognizable by said ANSI based SS7 telecommunications network and a TT, Numbering Plan (NP), Nature of Address indicator (NA), and GTS values recognizable by said CCITT based SS7 telecommunications network.

7. The system of claim 1 wherein said conversion module further comprises a register for storing values for translating between said SCCP parameter values recognizable by said ANSI based SS7 telecommunications network and SCCP parameter values recognizable by said CCITT based SS7 telecommunications network.

8. The system of claim 1 wherein said conversion module reformats between said SCCP parameters recognizable by said ANSI based SS7 telecommunications network and said SCCP parameters recognizable by said CCITT based SS7 telecommunications network.

9. The system of claim 1 wherein said signal includes a Calling Party Address (Cgpa) parameter containing a Cgpa value and wherein said conversion module further comprises means for:

copying said Cgpa value into one of said SCCP parameters; and

replacing said Cgpa parameter with a network address representing said gateway STP.

10. A system for converting Signaling Connection Control Part (SCCP) parameters within a signal to transport said signal between a first American National Standards Institute (ANSI) based Signaling System No. 7 (SS7) network and a second Consultative Committee on International Telegraph and Telephone (CCITT) based SS7 network, said system comprising:

a Message Transfer Part module for receiving said signal from one of said SS7 networks;

a SCCP module interfaced with said MTP module for retrieving said signal; and

a conversion module interfaced with said SCCP module for converting said SCCP parameter within said signal received from said one of said SS7 networks between ANSI parameters and CCITT parameters in order to be recognizable by the other SS7 network.

11. The system of claim 10 wherein said conversion module converts between a Translation Type (TT) and Global Title Series (GTS) values recognizable by said ANSI based SS7 network and a TT, Numbering Plan (NP), Nature of Address indicator (NA), and GTS values recognizable by said CCITT based SS7 network.

12. The system of claim 10 wherein said conversion module converts between a Signaling Point Code (SPC) and Subsystem Number (SSN) values recognizable by said ANSI based SS7 network and a TT, Numbering Plan (NP), Nature of Address indicator (NA), and GTS values recognizable by said CCITT based SS7 network.

13. The system of claim 10 wherein said conversion module comprises a register for storing values for translating between said SCCP parameter values recognizable by said ANSI based SS7 telecommunications network and SCCP parameter values recognizable by said CCITT based SS7 telecommunications network.

14. The system of claim 10 wherein said conversion module reformats data structure between said SCCP parameters recognizable by said ANSI based SS7 telecommunications network and said SCCP parameters recognizable by said CCITT based SS7 telecommunications network.

15. The system of claim 10 wherein said first SS7 network is connected to said second SS7 network via a gateway Signal Transfer Point (STP) and said signal includes a Calling Party Address (Cgpa) parameter containing a Cgpa value, and wherein said conversion module further comprises means for:

copying said Cgpa value into one of said SCCP parameters; and

replacing said Cgpa parameter with a SS7 network based network address representing said gateway STP.

16. A method for transporting data transmitted between a first application module within an American National Standards Institute (ANSI) protocol based telecommunications network and a second application module within a Consultative Committee on International Telegraph and Telephone (CCITT) protocol based telecommunications network, said method comprising the steps of:

retrieving Signaling Connection Control Part (SCCP) parameters within a signal carrying said data transmitted by either application module;

converting a Called/Calling Party Address within said SCCP parameters between the ANSI and CCITT protocols; and

transmitting said signal with said converted Called/Calling Party Address to the other application module.

17. The method of claim 16 wherein said step of converting said Called/Calling Party Address further comprises the step of converting between a Translation Type (TT) and Global Title Series (GTS) values recognizable by the ANSI protocol based telecommunications network and a TT, Numbering Plan (NP), Nature of Address indicator (NA), and GTS values recognizable by the CCITT protocol based telecommunications network.

18. The method of claim 16 wherein said step of converting said Called/Calling Party Address further comprises the step of converting between a Signaling Point Code (SPC) and Subsystem Number (SSN) values recognizable by the ANSI protocol based telecommunications network and a TT, Numbering Plan (NP), Nature of Address indicator (NA), and GTS values recognizable by the CCITT protocol based telecommunications network.

19. The method of claim 16 wherein said step of converting further comprises the step of reformatting between a data structure of said SCCP parameters recognizable by the ANSI protocol based telecommunications network and a data structure of said SCCP parameters recognizable by the CCITT protocol based telecommunications network.

20. The method of claim 16 wherein said ANSI protocol based telecommunications network is connected to said CCITT protocol based telecommunications network via a gateway Signal Transfer Point (STP) and said Calling Party Address is stored in first one of said SCCP parameters, and wherein said step of converting further comprises the steps of:

storing said Calling Party Address in a second one of said SCCP parameters; and

storing a network address representing said gateway STP into said first one of said SCCP parameters.

21. A system for transporting data transmitted between a first application module within an American National Standards Institute (ANSI) protocol based telecommunications network and a second application module within a Consultative Committee on International Telegraph and Telephone (CCITT) protocol based telecommunications network, said system comprising:

means for retrieving Signaling Connection Control Part (SCCP) parameters from a signal carrying said data transmitted by either application module;

means for converting a Called/Calling Party Address within said SCCP parameters between the ANSI and CCITT protocols; and

means for transmitting said signal with said converted Called/Calling Party Address to the other application module.

22. The system of claim 21 wherein said means for converting said Called/Calling Party Address further comprises the means for converting between a Translation Type (TT) and Global Title Series (GTS) values recognizable by said ANSI SS7 telecommunications network and a TT, Numbering Plan (NP), Nature of Address indicator (NA), and GTS values recognizable by said CCITT SS7 telecommunications network.

23. The system of claim 21 wherein said means for converting said Called/Calling Party Address further comprises the means for converting between a Signaling Point Code (SPC) and Subsystem Number (SSN) values recognizable by said ANSI SS7 telecommunications network and a TT, Numbering Plan (NP), Nature of Address indicator (NA), and GTS values recognizable by said CCITT SS7 telecommunications network.

24. The system of claim 21 wherein said ANSI protocol based telecommunications network is connected to said CCITT protocol based telecommunications network via a gateway Signal Transfer Point (STP) and said Calling Party Address is stored in first one of said SCCP parameters, and wherein said means for converting further comprises the means for:

storing said Calling Party Address into second one of said SCCP parameters; and

storing said first one of said SCCP parameters with a network address representing said gateway STP.