Virtual signaling network method

• US 5,282,244 A
• Filed: 06/24/1991
• Issued: 01/25/1994
• Est. Priority Date: 06/24/1991
• Status: Expired due to Term

• Current Assignee: American Telephone & Telegraph Company (AT&T, Inc.)
• Original Assignee: AT&T, Inc.
• Inventors: Nieto, Luis E., Fuller, Stephen, Hargraves, LaVerne A.
• Primary Examiner(s): Brown, Thomas W.
• Application Number:
  US07/719,851
• Time in Patent Office: 946 Days
• Field of Search: 379/207, 379/221, 379/112, 379/230, 379/196, 379/197, 379/220
• US Class Current: 379/230
• CPC Class Codes: H04Q 3/0016 Arrangements providing connection between exchanges
• CPC Class Codes: Y10S 379/901 Virtual networks or virtual private networks

Abstract

A Common Channel Signaling Network such as the SS7 network is configured as a virtual signaling network, such that the network is shared in common among several users. Each user, which may be a private network operator, an ICO, a RBOC, a cellular mobile carrier, or an interexchange carrier, appears to control the signaling network and is enabled to use a wide variety of its capabilities to transmit and receive both trunk signaling messages and database messages to and from other networks connected to the virtual signaling network. The invention is implemented by interconnecting signal transfer points (STPs) within the virtual signaling network that operate in accordance with our invention with the SS7 switches and/or signal transfer points of other networks. Signaling messages presented to the STPs in the virtual signaling network are screened to insure security, translated in accordance with stored translation tables so as to allow message transport between the user'"'"'s network and the appropriate destination network, and then addressed and routed to the proper destinations.

Claims

1. In a shared signaling network, a method of processing signaling messages generated in one of a plurality of interconnected telecommunications networks, each of said signaling messages containing information used to control the routing of corresponding telecommunications traffic originating and/or terminating in said one of a plurality of interconnected telecommunications networks, said method comprising the steps of

receiving said signaling messages in one of a plurality of interconnected signal transfer points (STPs);

screening received signaling messages in said STP to verify eligibility of said one of said interconnected telecommunications networks that originated said signaling messages to use said shared signaling network; and

transmitting selected ones of said signaling messages to another one of said interconnected telecommunications networks, thereby enabling desired routing of said telecommunications traffic through said interconnected telecommunications networks.

2. The invention defined in claim 1 wherein said signaling messages include encoded information relating to the points of origin and destination of said telecommunications traffic, and wherein said method further includes the step of translating said encoded information.

3. A method of processing signaling messages originated in a first telecommunications network in a signaling network associated with a second telecommunications network, each of said signaling messages containing information used for routing associated telecommunications traffic, said processing method including the steps of:

screening said signaling messages to select messages authorized for processing;

translating information in said selected signaling messages to generate routing messages;

collecting translated information relating to said signaling messages; and

addressing and routing said signaling messages to an appropriate destination,

so as to enable transmission of said telecommunications traffic between said first and second telecommunications networks.

4. A method of transmitting signaling messages between interconnected signal transfer points (STPs), said signaling messages including information for controlling the flow of telecommunications messages between associated interconnected telecommunications networks, said method comprising the steps of:

determining the validity of each signaling message in one of said STPs, said determining step including determining the validity of various codes within said each signaling message; and

passing validated messages between said one of said STPs and a destination in one of said interconnected telecommunications networks.

5. The method defined in claim 4 wherein said method further includes the step of collecting information relating to the number of valid signaling messages processed using said method.

6. A method for transmitting signaling messages including routing messages and/or data base queries between a plurality of interconnected signal transfer points (STPs) in a shared CCS7 signaling system, said method including the steps of

determining the validity of information including originating point code (OPC) and destination point code (DPC) information in said signaling messages;

translating said DPC and OPC information in each validated message into a form suitable for controlling routing of a respective call between said STPs; and

collecting information concerning each processed message.

7. A method for transmitting signaling messages and data base queries between a plurality of interconnected telecommunications networks, said networks each arranged to originate and/or terminate calls that begin in or are destined for others of said telecommunications networks, said signaling messages including encoded information describing the origin and destination of said calls and the type of encoding used to encode said signaling messages, said method comprising

screening said signaling messages;

translating said encoded information in said signaling messages in accordance with said encoding type, and

measuring the usage of said method by each of said telecommunications networks.

8. A method for processing signaling messages in a signal transfer point (STP), said signaling messages controlling the transport of calls in an associated telecommunications network, said method including:

screening said signaling messages to determine eligibility of the network originating each of said signaling messages to use said STP;

translating coded information in said signaling messages to enable transmission of said signaling messages to an ultimate destination in said telecommunications network; and

storing information contained in said signaling messages for billing for usage of said STP.

9. The method defined in claim 8 wherein said method includes the step of performing a different sequence of processing steps for different types of signaling messages.

10. The method defined in claim 8 wherein said method further includes the step of discarding signaling messages determined to be ineligible to access said STP.