| US 7,551,612 B2 | ||
| Intra-station control system for connectionless communications system | ||
| Yasusi Kobayashi, Kawasaki (Japan); Yoshihiro Watanabe, Kawasaki (Japan); Hiroshi Nishida, Kawasaki (Japan); Masami Murayama, Kawasaki (Japan); Naoyuki Izawa, Kawasaki (Japan); Yasuhiro Aso, Kawasaki (Japan); Yoshihiro Uchida, Kawasaki (Japan); Hiromi Yamanaka, Kawasaki (Japan); Jin Abe, Kawasaki (Japan); Yoshihisa Tsuruta, Kawasaki (Japan); Yoshiharu Kato, Kawasaki (Japan); Satoshi Kakuma, Kawasaki (Japan); Shiro Uriu, Kawasaki (Japan); Noriko Samejima, Kawasaki (Japan); Eiji Ishioka, Kawasaki (Japan); Shigeru Sekine, Kawasaki (Japan); Yoshiyuki Karakawa, Fukuoka (Japan); Atsushi Kagawa, Yokohama (Japan); Mikio Nakayama, Kawasaki (Japan); Miyuki Kawataka, Kawasaki (Japan); Satoshi Esaka, Fukuoka (Japan); Nobuyuki Tsutsui, Kawasaki (Japan); Fumio Hirase, Kawasaki (Japan); Atsuko Suzuki, Kawasaki (Japan); Shouji Kohira, Kawasaki (Japan); Kenichi Okabe, Kawasaki (Japan); Takashi Hatano, Kawasaki (Japan); Yasuhiro Nishikawa, Yokohama (Japan); Jun Itoh, Yokohama (Japan); and Shinichi Araya, Yokohama (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Mar. 26, 1999, as Appl. No. 9/277,213. | ||
| Application 09/277213 is a division of application No. 08/518110, filed on Aug. 21, 1995, granted, now 6,333,932. | ||
| Claims priority of application No. 6-255120 (JP), filed on Aug. 22, 1994. | ||
| Prior Publication US 2003/0179712 A1, Sep. 25, 2003 | ||
| Int. Cl. H04L 12/66 (2006.01) | ||
| U.S. Cl. 370—368 [370/386; 370/395.1; 370/465; 709/227] | 2 Claims |
| 1. A switch station, comprising:
a switch exchanging an ATM cell;
a memory storing control data to control operations of the switch station;
an intra-station device, accommodating a subscriber line, performing a communication operation on a subscriber ATM cell that
is transmitted to or received from the subscriber line;
a control processor generating control information in a link access protocol (LAP) frame data format, which cannot be exchanged
by said switch; and
an interface unit converting the data format of the generated control information into the data format of the ATM cell to
transmit the control information to the intra-station device through the switch, wherein
the control information is communicated according to link access protocol,
the intra-station device, upon receiving the control information from the control processor, transmits a direct memory access
request to the interface unit to obtain control data stored in the memory,
said interface unit obtains the control data from the memory according to the direct memory access request, and converts the
data format of the control data into the data format of the ATM cell to transmit the control data to the intra-station device
through the switch, and
the intra-station device performs the communication operation on the subscriber ATM cell based on the control data received
through the switch.
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