Public IP transport network

• US 6,097,719 A
• Filed: 03/11/1997
• Issued: 08/01/2000
• Est. Priority Date: 03/11/1997
• Status: Expired due to Term

• Current Assignee: Verizon Patent and Licensing Incorporated (Verizon Communications Inc.)
• Original Assignee: Bell Atlantic Network Services, Inc. (Verizon Communications Inc.)
• Inventors: Benash, Ray, D'Andrea, Kenneth P.
• Primary Examiner(s): Pham, Chi H.
• Assistant Examiner(s): Duong, Frank
• Application Number:
  US08/815,364
• Time in Patent Office: 1,239 Days
• Field of Search: 370/352, 370/356, 370/400, 370/401, 370/410, 370/463, 370/522, 379/210, 379/211, 379/212, 379/220, 379/221
• US Class Current: 370/352
• CPC Class Codes: H04M 3/42306 Number translation services, e.g. premium-rate, freephone or vanity number services
• CPC Class Codes: H04M 7/122 where the PSTN/ISDN access is used as an access to networks other than PSTN/ISDN access arrangements to networks other than PSTN/ISDN H04M7/0066; access arrangements to public data networks H04L12/2856
• CPC Class Codes: H04Q 3/0045 involving hybrid, i.e. a mixture of public and private, or multi-vendor systems

Abstract

A system and method for providing IP transport and Internet services using a public switched telephone network (PSTN) and providing equal access. The system provides a wide area communications network serving a plurality of defined geographic areas such as LATAs, served by a switched telephone network having a plurality of central office switching systems in the telephone network in each geographic area connected to a plurality of terminals in premises served by said switching systems in those geographic areas. A switched multimegabit data service (SMDS) network spans the geographic areas and a plurality of Internet service providers (ISPs) are connected to the SMDS network. At least one data hub node is provided in each geographic area and each hub node is connected to the SMDS network. Each data hub node includes a gateway router connected via a packet switch and at least one multi-port access server to one of the central office switching systems for switched connection to selected ones of the premises. The PSTN is controlled by an advanced intelligent network having service switching points, service transfer points, and a service control point having databases associated therewith. The ISPs are provided with virtual numbers and subscribe to multiple ports on the terminal access servers. One of the databases associated with the service control point provides a translation from the virtual number to the identity of an ISP. Another of the databases provides a translation based on the identity of the ISP and the calling station to a port. Connection is made between the calling station and the ISP via the port, router, and SMDS network.

Claims

1. In a public switched telephone network (PSTN) having a plurality of PSTN multiport nodes located respectively in a plurality of served geographical areas, said multiport nodes connected to a PSTN data network having port numbers corresponding to virtual numbers associated with respective internet service providers subscribing to PSTN service through said multiport nodes via said PSTN data network, a method for routing a data call, placed to one of said virtual numbers from a calling station location in said PSTN, to a respective one of said plurality of multiport nodes predesignated to serve the geographical area containing the location of the calling station, comprising the steps of:

determining the identification of the calling station;

accessing a first database having content relating the identification of the calling station to an indicia code of the calling station'"'"'s geographical location to obtain the calling station'"'"'s corresponding indicia code;

accessing a second database having content relating the calling station'"'"'s indicia code to a number of the internetwork service provider subscriber node port serving the geographical area of the calling station to obtain a related node port number; and

routing the call to the node associated with the port number obtained in said step of accessing said second database.

2. A method according to claim 1 wherein said indicia code comprises postal zip code.

3. A method according to claim 1, further including the steps of:

processing signals from said calling station in the node to which said call has been routed in said routing step to translate and route said signals between the calling station and said PSTN data network to which the internetwork service provider subscriber is connected.

4. A method according to claim 3 wherein said PSTN data network comprises a switched multimegabit data service network operating in a connectionless mode.

5. A method according to claim 3 wherein said processing in said node includes data switching and packet addressing.

6. A method according to claim 1, wherein said PSTN includes service switching points and is controlled by a separate common channel signaling network having a separate controller with access to databases, said controller being connected by data links and service transfer points to said service switching points, including the steps of:

receiving the call from the calling station and, responsive to recognizing the call as one being placed to a virtual number, suspending processing of the call to formulate a routing query message containing an identification of the calling station and the virtual telephone number, transmitting said routing query message via at least one of said service switching points and at least one of said service transfer points to said controller, responsive to receiving said query message at said controller, accessing a database associated with said controller to identify the internetwork service provider subscriber to said virtual number, and using said identity of said service provider subscriber to select said second database.

7. A method according to claim 6 including the step of accessing said second database from said controller.

8. A method according to claim 7 wherein said controller is an integrated service control point.

9. A method of providing internetwork data services via a public switched telecommunications network (PSTN) spanning a plurality of geographical areas and having central office switching systems serving premises in each of said geographical areas via links between said central office switching systems and said premises and having a separate common channel signaling control system and controller spanning said plurality of geographical areas and including databases associated with said controller;

said method comprising the steps of;

providing in each of a plurality of said geographical areas a multiport data network node connected to said PSTN and having routing and data switching capabilities; and

routing a data call dialed to a virtual number from one of said premises via a central office switching system to which said one premise is connected by one of said links from said central office switching system to a port in one of said data network nodes in the geographical area in which said one premise and said central office switching system to which said one premise is connected are located;

wherein said routing step comprises;

selecting said port based on the virtual number and on the identity of said one premise, and directing said call via the selected port through the data network node in which said port is located to a switched multimegabit data service network and via said switched multimegabit data service network to an internetwork service provider connected to said switched multimegabit data service network; and

selecting said internetwork service provider in response to a signal from said controller, wherein the information in said signal is at least partially based on a search of one of said databases associated with said controller.

10. A method according to claim 9 wherein said port is selected based on the virtual number and on the identity and geographical location of said one premise.

11. A method according to claim 10 including the step of determining the geographical location of said one premise from a data base accessed by said controller.

12. A method according to claim 11 wherein said data base from which said geographical location of said one premise is located is controlled by said public switched telecommunications network.

13. A method according to claim 11 including the steps of using the geographical location of said one premise determined from said database accessed by said controller to access a second data base, and determining from said second data base the identity of said port.

14. A method according to claim 13 wherein said second database is accessible to said network service provider connected to said switched multimegabit data service network and editable by said network service provider.

15. A method according to claim 14 including the step of connecting said data call from said one of said premises via said switched multimegabit data service network and said service provider to the Internet.

16. A wide area internetwork including a public switched telecommunications network serving multiple geographic areas and comprising in combination:

a switched telecommunications network (PSTN) having trunked central office switching systems connected by local links to end user subscribers premises stations in said geographic areas and associated with service switching points, said PSTN being controlled by a separate common channel signaling network having service transfer points connected by data links to said service switching points and connected to a service control point having databases associated therewith;

a switched data service network having internetwork service provider subscribers to said PSTN connected thereto for providing internetwork service to at least some of said end user subscribers;

at least one hub node having routing and switching capabilities located in each of said geographical areas and connected to said switched data service network;

said at least one hub node including a router connected to said switched data service network and a packet switch connected to said router, said packet switch being connected via a multiport server to a central office switching system comprising or associated with one of said service switching points, said service provider subscribers having subscriptions to selected ports in said servers;

said ports in said servers being connected to at least some of said end user subscriber premises stations via said local links;

said databases associated with said service control point including one or more databases for translating virtual numbers assigned to said internetwork service provider subscribers to actual numbers and to identifications of ports in said servers under subscription to said internetwork service provider subscribers;

said last named databases being used by said service control point to connect end user subscribers calling virtual numbers assigned to said internetwork service provider subscribers to said internetwork service provider subscribers via said local links, servers, packet switches, routers, and said switched data service network.

17. A network according to claim 16 wherein said data base associated with said service control point includes at least one data base under the control of said PSTN.

18. A network according to claim 17 wherein said data base associated with said service control point includes at least one data base under the joint control of said PSTN and said internetwork service provider subscribers.

19. A network according to claim 18 wherein one of said data bases provides translations from virtual numbers to actual numbers of said internetwork service provider subscribers and another of said data bases provides translations of actual numbers of said internetwork service provider subscribers and identification of calling end user subscribers to port identifications.

20. A network according to claim 19 wherein said data bases providing translations of actual numbers of said internet service provider subscribers to port identifications are under at least partial control of said internet service provider subscribers.

21. A network according to claim 20 wherein said data bases providing translations of actual numbers of said internet service provider subscribers to port identifications provide said translations based upon the geographical location of said end user subscriber premises.

22. A network according to claim 21 wherein said data bases providing translations from virtual numbers to actual numbers of said internetwork service provider subscribers include at least one data base providing translations from the identification of a calling end user subscriber premises station to an indicia code of the geographical location of said calling end user subscriber premises station.

23. A network according to claim 22 wherein said data bases include a data base translating said indicia codes to port identifications.

24. A network according to claim 23 wherein said data base translating said indicia codes to port identifications is connectable to internetwork service provider subscriber processors capable of altering the content of said data base.

25. A network according to claim 16 wherein said switched data service network is a switched multimegabit data service network.