Control of a telephone switching system over a digital information network

• US 6,181,691 B1
• Filed: 08/28/1997
• Issued: 01/30/2001
• Est. Priority Date: 09/23/1996
• Status: Expired due to Term

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Wittinger, Clemens, Markgraf, Frank, Schottmüller, Claus
• Primary Examiner(s): Pham, Chi H.
• Assistant Examiner(s): Pham, Brenda H.
• Application Number:
  US08/919,963
• Time in Patent Office: 1,251 Days
• Field of Search: 370/466, 370/467, 370/352, 370/356, 395/200.5, 395/200.56, 395/200.57
• US Class Current: 370/352
• CPC Class Codes: H04L 67/025 for remote control or remote monitoring of applications
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04M 3/56 Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities video conference systems H04N7/15
• CPC Class Codes: H04M 7/0012 Details of application programming interfaces [API] for telephone networks; Arrangements which combine a telephonic communication equipment and a computer, i.e. computer telephony integration [CPI] arrangements
• 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 3/0025 Provisions for signalling

Abstract

A telephone switching center is controlled by a server computer (22) utilizing a Hypertext Transfer Protocol (HTTP), which is connected to a World Wide Web (WWW) network. It is proposed to provide, between a HTTP server (22) and the switching system (23), a control program (20) which enables control of a CTI application by the HTTP server (22). The proposed CTI application (20) provides an interface which uses a Universal Resource Locator (URL) specifying high level communicating functions which are independent of the respective interface (21) to the switching system or the CTI server.

Claims

1. A system for providing an interface between a client device in a computer network and a telephone switching system (TSS) which controls telephone connections over a public switched telephone network (PSTN) using switching commands conforming to PSTN protocols, said telephone switching system having a system management interface, said interface-providing system comprising:

a network server for receiving user commands from the client device through the computer network, said user commands conforming to standard client/server communication network protocols; and

a protocol processor connecting said network server and the telephone switching system through the system management interface of said telephone switching system, said protocol processor converting user commands into corresponding switching system commands conforming to TSS protocols.

2. A system according to claim 1 wherein the computer network is a local area network utilizing an HTTP protocol for user commands.

3. A system according to claim 2 wherein the computer network is a wide area network utilizing an HTTP protocol for user commands.

4. A method for controlling a telephone switching system (TSS) from a client device in a computer network wherein the telephone switching system provides switching commands conforming to public switched telephone network (PSTN) protocols for controlling a PSTN, said telephone switching system having a system management interface, said method comprising the steps of:

entering user commands into the computer network from the client device, said user commands conforming the computer network protocols;

receiving the entered user commands at a network server;

converting the entered user commands at the network server to provide switching system commands conforming to TSS protocols; and

transmitting the system switching commands to the telephone switching system through the system management interface to enable the telephone switching system to perform operations in accordance with the system switching commands.

5. A control system for a telephone switching system having a system management interface over which telephony commands can be received to control the operation of the telephone switching system, said control system comprising:

a data communications server for receiving requests for telephone switching system operations from a remote client system, said requests conforming to a standard data communications protocol; and

a computer-telephony integration (CTI) processor for mapping each of said requests to a command having a format acceptable to the telephone switching system, said CTI processor providing each command to the telephone system over the system management interface.

6. A control system as set forth in claim 5 wherein the requests received at the data communications server include at least requests for call setup, call termination, call forwarding and call conferencing operations to be performed under the control of the telephone switching system.

7. A control system as set forth in claim 6 wherein the remote client is connected to said data communications server through a data communications network.

8. A control system as set forth in claim 7 wherein the data communications network is a wide area network.

9. A control system as set forth in claim 7 wherein the data communications network is a local area network.

10. A control system as set forth in any of claims 5-9 wherein the standard data communications protocol to which requests conform is HyperText Transfer Protocol (HTTP).

11. A method for controlling a telephone switching system having a system management interface on which telephone switching system commands are received, said method comprising the steps of:

receiving requests for telephone switching system operations, said requests conforming to a standard data communications protocol;

mapping each of said requests to a command having a format acceptable to the telephone switching system;

transferring each of said commands to the telephone system through the system management interface; and

executing each transferred command in the telephone switching system.

12. A method as set forth in claim 11 wherein the requests for telephone switching system operations include at least requests for call setup, call termination, call forwarding and call conferencing operations to be performed under the control of the telephone switching system.

13. A method as set forth in claim 12 wherein the requests are received over a data communications network.

14. A method as set forth in claim 13 wherein the data communications network is a wide area network.

15. A method as set forth in claim 14 wherein the data communications network is a local area network.

16. A method as set forth in any of claims 11-15 wherein the standard data communications protocol to which requests conform is HyperText Transfer Protocol (HTTP).