TECHNIQUE FOR CONFIGURING NETWORK INTERFACE CIRCUIT IN INTEGRATED SERVICES DIGITAL NETWORK KEYPHONE SYSTEM

• US 20020085577A1
• Filed: 03/02/1998
• Published: 07/04/2002
• Est. Priority Date: 02/28/1997
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, JONG-IL
• Granted Patent: US 6,426,963 B1
• Time in Patent Office: Days
• US Class Current: 370/420
• CPC Class Codes: H04Q 11/0457 Connection protocols
• CPC Class Codes: H04Q 11/0471 Terminal access circuits

Abstract

A technique for configuring a network interface circuit capable of being commonly used in all countries or networks which have different ISDN protocols, with only one BRI trunk includes the steps of: first storing beforehand in a read only memory (ROM) of the network interface circuit all function programs for supporting an integrated services digital network protocol for each country and network which will be used by the keyphone system, selecting a function program from among the function programs stored in the ROM corresponding the country and kind of network to be operated upon initialization, and setting the selected program, as the function program to be executed.

Claims

1. A method for configuring a network interface circuit in an integrated services digital network keyphone system, comprising the steps of:

first storing in a read only memory (ROM) of the network interface circuit all function programs supporting an integrated services digital network protocol for each country and network which will be used by the keyphone system;

selecting a function program corresponding to the country and kind of network to be operated upon initialization from among the function programs stored in the ROM; and

setting the selected program, as an execution function program.

2. The method as defined in claim 1, said initialization being executed when said keyphone system is power on reset and said network interface circuit is reset.

3. The method as defined in claim 2, said integrated services digital network protocol being performed according to said execution function program upon normal operation of said system.

4. A method for configuring a network interface circuit in an integrated services digital network keyphone system, comprising the steps of:

first storing in a read only memory (ROM) of the network interface circuit all function programs supporting an integrated services digital network protocol for each country and network which will be used by the keyphone system;

receiving a country code and a network code to be currently operated from a main device of said keyphone system upon initialization; and

selecting a function program corresponding to said country code and network code from among the function programs stored in said ROM and setting the selected program as an execution function program.

5. The method as defined in claim 4, said initialization being executed when said keyphone system is power on reset and said network interface circuit is reset.

6. The method as defined in claim 5, said country code and said network code being set in correspondence with the countries and kinds of networks to be currently operated by an operator of said keyphone system.

7. The method as defined in claim 6, further comprising:

executing said integrated services digital network protocol in accordance with said execution function program upon normal operation of said system after completion of configuration.

8. The method as defined in claim 7, all of the country codes and network codes corresponding to the function programs stored in said ROM being transmitted to said main device and are again set, upon said country code and said network code not being supported by the function program stored in said ROM.

9. A method for configuring a network interface circuit in an integrated services digital network keyphone system, comprising the steps of:

(a) first storing in a read only memory (ROM) of the network interface all function programs of supporting an integrated services digital network protocol for each country and network which will be used by said keyphone system, receiving a country code and a network code to be currently operated from a main device of said keyphone system through an application entity by a layer management entity upon initialization; and

(b) selecting a function program corresponding to said country code and network code from among the function programs stored in said ROM by a call control entity, a network signaling entity, a data link entity, and a physical entity, and setting the selected program as an execution function program.

10. The method as defined in claim 9, step (b) being comprised of:

(c) requesting said call control entity, said network signaling entity, said data link entity, and said physical entity to perform a configuration for said country code and network code by said layer management entity, sequentially;

(d) selecting a function program for said country code and network code according to a configuration need from said layer management entity by said call control entity, said network signaling entity, said data link entity, and said physical entity, from among the function programs stored in said ROM and setting the selected program as the execution function program; and

(e) informing the configuration completion by said layer management entity through said application entity to said main device after completing the configuration of said call control entity, said network signaling entity, said data link entity, and said physical entity.

11. The method as defined in claim 10, said step (d) being executed by forming a start address list of said execution function programs as an execution table.

12. The method as defined in claim 11, said initialization being executed when said keyphone system is power on reset and said network interface circuit is reset.

13. The method as defined in claim 12, said country code and said network code being set in correspondence with the countries and kind of networks to be currently operated by an operator of said keyphone system.

14. The method as defined in claim 13, farther comprising:

executing said integrated services digital network protocol in accordance with said execution function program upon normal operation of the system after completion of configuration.

15. The method as defined in claim 14, further comprising:

upon said country code and said network code not being supported by the function program stored in said ROM, transmitting all of the country codes and network codes corresponding to the function programs stored in said ROM to said main device by said layer management entity; and

displaying all of the country codes and network codes received from said layer management entity by said main device and transmitting a country code and network code set again by said operator, to said layer management entity.