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US006295297B1
(12) United States Patent ao) Patent No.: us 6,295,297 Bi
Lee (45) Date of Patent: Sep. 25,2001
(54) GATEWAY FOR CONNECTING ATM-BASED ACCESS NETWORK TO EXISTING NETWORK
(75) Inventor: Hae-yeong Lee, Kunpo (KR)
(73) Assignee: Samsung Electronics Co., Ltd., Kyungki-do (KR)
( * ) Notice: Subject to any disclaimer, the term ol this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.
(21) Appl. No.: 09/098,416
(22) Filed: Jun. 16, 1998
(30) Foreign Application Priority Data
Dec. 29, 1997 (KR) 97-76405
(51) Int. C I. II04I. 12 56
(52) U.S. CI 370/395; 370/401; 370/409;
370/466
(58) Field of Search 370/355, 356,
370/352, 395, 401, 466, 467, 409, 359, 419, 420, 463, 474, 475, 421
(56) References Cited
U.S. PATENT DOCUMENTS
5,408,469 * 4/1995 Opher et al 370/399
5,526,351 * 6/1996 Mochinaga et al 370/401
5,568,471 10/1996 Hershey et al 370/17
5,734,656 * 3/1998 Prince et al 370/401
5,781,549 * 7/1998 Dai 370/401
5,949,775 * 9/1999 Rautiola et al 370/401
FOREIGN PATENT DOCUMENTS
0 666 670 8/1995 (EP) H04L/29/06
0 705 012 4/1996 (EP) H04L/29/00
0 822 731 2/1998 (EP) H04Q/11/04
2 294 840 5/1996 (GB) H04Q/3/00
2-288749 11/1990 (IP) H04L/12/48
A gateway for connecting an existing public network to an asynchronous transler mode (ATM)-based access network is provided. The gateway includes an ATM network connector for performing signal processing to send or receive a signal via a broadband ATM network and controlling the signal processing, an existing circuit network connector for processing a signal to send or receive the signal via an existing circuit network, reciprocally converting between the signal transmitted via the existing circuit network and an ATM cell, and controlling the signal processing and the conversion, a plurality of line terminations for sending or receiving a signal by connecting to a remote user, converting between the signal from the user and the ATM cell, and controlling the sending, reception and conversion, and a system bus for transmitting a signal between the plurality of line terminations and the ATM and existing circuit network connectors. Therefore, when a superspeed information communications network is later established on the basis of ATM, the load applied to an ATM network exchanger during connection of an ATM access network with the existing circuit network is reduced, to aid high-speed information communications.
3 Claims, 3 Drawing Sheets
