JPH07177155A - Inter-processor communication system for atm exchange - Google Patents

Inter-processor communication system for atm exchange

Info

Publication number
JPH07177155A
JPH07177155A JP32250893A JP32250893A JPH07177155A JP H07177155 A JPH07177155 A JP H07177155A JP 32250893 A JP32250893 A JP 32250893A JP 32250893 A JP32250893 A JP 32250893A JP H07177155 A JPH07177155 A JP H07177155A
Authority
JP
Japan
Prior art keywords
atm
atm cell
line
processor
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP32250893A
Other languages
Japanese (ja)
Inventor
純徳 ▲吉▼川
Suminori Yoshikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP32250893A priority Critical patent/JPH07177155A/en
Publication of JPH07177155A publication Critical patent/JPH07177155A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To reduce the installation quantity between processors and to facilitate the extension of a line terminator by employing an ATM cell for a data transfer method of the inter-processor communication system of an ATM exchange. CONSTITUTION:An ATM cell composition decomposition device 14(23, 32) is provided to a pre-stage of a processor 11(21, 31) of a line terminator 1(ATM cell exchange 2 and call connection controller 3) of the ATM exchange, and an ATM cell signal insertion separation device 13 used to apply demultiplex/ multiplex to an ATM cell on a line is arranged in the line terminator 1, transfer data sent/received between processors are converted into an ATM cell and an ATM switch 22 of a talking system exchanges ATM cells to transfer data between the processors.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はATM(Asynchr
onous Transfer Mode、非同期転送
モード)交換機のプロセッサ間通信方式に関し、特にデ
ータ転送方式に関する。
The present invention relates to an ATM (Asynchr)
The present invention relates to an inter-processor communication system of an exchange, particularly a data transfer system.

【0002】[0002]

【従来の技術】従来のATM交換機のプロセッサ間通信
方式は、図3に示すように、呼接続制御装置3とATM
セル交換装置2と回線終端装置1のそれぞれにパケット
バス終端装置33,24,16を配備し、通話路とは別
のパケットバス7を用いて、呼接続制御装置3内の主プ
ロセッサ(プロセッサ31)とATMセル交換装置2内
のスイッチ制御プロセッサ(プロセッサ21)及び回線
終端装置1内の回線終端制御プロセッサ(プロセッサ1
1)の間で送受信される呼接続制御信号やトラヒック情
報などの全てのデータをパケットに変換して送受するも
のであった。
2. Description of the Related Art As shown in FIG. 3, a conventional inter-processor communication system of an ATM switching system has a call connection controller 3 and an ATM.
A packet bus termination device 33, 24, 16 is provided in each of the cell switching device 2 and the line termination device 1, and a packet bus 7 different from the communication path is used to use the main processor (processor 31 ) And a switch control processor (processor 21) in the ATM cell switching apparatus 2 and a line termination control processor (processor 1) in the line termination apparatus 1.
All data such as call connection control signals and traffic information transmitted / received between 1) are converted into packets and transmitted / received.

【0003】回線終端装置1のプロセッサ11が呼接続
制御装置3のプロセッサ31にデータを転送する場合を
例にとって説明する。
A case where the processor 11 of the line terminating device 1 transfers data to the processor 31 of the call connection control device 3 will be described as an example.

【0004】回線終端装置1のプロセッサ11は、図4
に示すパケットのフォーマットのごとく転送データの先
頭バイトに転送先のアドレスと転送バイト数を付与して
パケットを組み立ててパケットバス終端装置16に転送
指示を行なう。パケットバス終端装置16は、この指示
によりパケットバス使用権調停装置34に対して、バス
使用権の獲得を要求する。このパケットバス使用権調停
装置34は、通常、呼接続制御装置3内に配備される。
使用権を得たパケットバス終端装置16はパケットバス
7上にパケットを送出する。パケットバス終端装置16
以外の他のすべてのパケットバス終端装置24,33
は、受信したパケットの先頭アドレスを自装置のアドレ
スと比較し、一致したときにのみ当該パケットを受け取
る。この時、受信したパケットバス終端装置33はパケ
ットの転送バイト数を確認して、正常に受信した場合に
のみ応答信号をパケットバス7上に送出する。パケット
送出したパケットバス終端装置16は最終的に、この応
答信号を受け取り、装置内のプロセッサ11に対してデ
ータ転送の完了を通知する。また、受信したパケットバ
ス終端装置33は、データ受信の通知をその装置内のプ
ロセッサ31に対して行なう。
The processor 11 of the line terminating device 1 is shown in FIG.
As shown in the packet format shown in FIG. 5, the transfer destination address and the transfer byte number are added to the first byte of the transfer data to assemble the packet, and the transfer instruction is given to the packet bus terminating device 16. The packet bus terminating device 16 requests the packet bus usage right arbitration device 34 to acquire the bus usage right according to this instruction. The packet bus right-of-use arbitration device 34 is normally provided in the call connection control device 3.
The packet bus terminating device 16 which has obtained the usage right sends out the packet onto the packet bus 7. Packet bus termination device 16
All other packet bus terminators 24, 33
Compares the start address of the received packet with the address of its own device and receives the packet only when they match. At this time, the received packet bus termination device 33 confirms the number of transfer bytes of the packet and sends a response signal to the packet bus 7 only when the packet is normally received. The packet bus terminating device 16 that has transmitted the packet finally receives this response signal and notifies the processor 11 in the device of the completion of the data transfer. Further, the received packet bus termination device 33 notifies the processor 31 in the device of the data reception.

【0005】[0005]

【発明が解決しようとする課題】この従来のATM交換
機のプロセッサ間通信方式では、ATMセル通話路の他
にパケットバスを配備する必要があったと同時に、バス
構成であるが故に伝送距離に限界があり、ATM交換機
のシステム規模が限定されてしまっていた。
In the conventional interprocessor communication system of the ATM switch, it is necessary to provide a packet bus in addition to the ATM cell communication path, and at the same time, the transmission distance is limited due to the bus structure. Yes, the system scale of the ATM switch was limited.

【0006】また、回線終端装置の設備増加にともなう
パケットバスの拡張においても、パケットバスのデータ
転送能力があらかじめ設定されているため、各装置に与
えられるデータ転送量はパケットバスのデータ転送能力
を回線終端装置の数で割り掛けたものしか与えられない
ことになるという欠点があった。
Further, even when the packet bus is expanded with the increase in the equipment of the line terminating equipment, the data transfer capacity of the packet bus is set in advance, so the data transfer amount given to each device is determined by the data transfer capacity of the packet bus. The drawback is that only the product of the number of line terminators is given.

【0007】[0007]

【課題を解決するための手段】本発明のATM交換機の
プロセッサ間通信方式は、ATM交換機を構成する呼接
続制御装置と、回線終端装置と、ATMセル交換装置と
は、転送情報をATMセルに分解またはATMセルを転
送情報に組み立てるATMセル組立分解手段をそれぞれ
有し、前記ATMセル交換装置が有するATMスイッチ
は、前記呼接続制御装置が有するATMセル組立分解手
段と前記ATMセル交換装置が有するATMセル組立分
解手段とにそれぞれATMセル信号路で接続され、前記
回線終端装置は、当該回線終端装置が有する回線終端部
と前記ATMセル交換装置が有するATMスイッチとの
間に位置してATMセル通話路から特定のATMセル信
号を分離挿入するATMセル信号分離挿入手段を有し、
当該ATMセル信号分離挿入手段は更に、当該回線終端
装置が有するATMセル組立分解手段にATMセル信号
路で接続され、前記呼接続制御装置と、回線終端装置
と、ATMセル交換装置とが有するプロセッサ間で送受
される通信情報をATMセルに変換して転送することを
特徴とする。
An interprocessor communication system for an ATM switch according to the present invention is such that a call connection control device, a line terminating device, and an ATM cell switching device, which constitute the ATM switch, transfer information to ATM cells. The ATM switch included in the ATM cell switching apparatus has ATM cell assembling / disassembling means for disassembling or assembling ATM cells into transfer information. The ATM switch assembling / disassembling means included in the call connection control apparatus and the ATM cell switching apparatus include. The ATM cell assembling / disassembling means is respectively connected by an ATM cell signal path, and the line terminating device is located between the line terminating unit of the line terminating device and the ATM switch of the ATM cell switching device. An ATM cell signal separating / inserting means for separating / inserting a specific ATM cell signal from the communication path,
The ATM cell signal separating / inserting means is further connected to the ATM cell assembling / disassembling means of the line terminating device by an ATM cell signal path, and the processor included in the call connection control device, the line terminating device and the ATM cell switching device. It is characterized in that the communication information transmitted and received between the ATM cells is converted into ATM cells and transferred.

【0008】[0008]

【実施例】次に本発明について図面を参照して説明す
る。
The present invention will be described below with reference to the drawings.

【0009】図1は本発明のATM交換機のプロセッサ
間通信方式の一実施例を示すブロック図である。
FIG. 1 is a block diagram showing an embodiment of an interprocessor communication system of an ATM exchange according to the present invention.

【0010】ATM交換機は、ATM回線を収容する回
線終端装置1とATMセルの交換処理を行なうATMセ
ル交換装置2と回線終端装置1及びATMセル交換装置
2の制御を行なう呼接続制御装置3で構成される。
The ATM exchange comprises a line termination device 1 accommodating an ATM line, an ATM cell exchange device 2 for exchanging ATM cells, and a call connection control device 3 for controlling the line termination device 1 and the ATM cell exchange device 2. Composed.

【0011】回線終端装置1には回線の物理終端を行な
う回線終端部12があり、この回線終端部を制御する回
線終端制御プロセッサ(プロセッサ11)がある。
The line terminating device 1 has a line terminating unit 12 for physically terminating the line, and a line terminating control processor (processor 11) for controlling the line terminating unit.

【0012】ATMセル交換装置2にはATMセルのス
イッチングを行なうATMスイッチ22があり、このA
TMスイッチを制御するスイッチ制御プロセッサ(プロ
セッサ21)がある。
The ATM cell switching device 2 has an ATM switch 22 for switching ATM cells.
There is a switch control processor (processor 21) that controls the TM switch.

【0013】また、呼接続制御装置3には呼接続処理を
実行する主プロセッサ(プロセッサ31)がある。
Further, the call connection control device 3 has a main processor (processor 31) for executing call connection processing.

【0014】これら各装置のプロセッサにATMセル組
立分解装置14,23,32を配備する。そして、呼接
続制御装置3にあるATMセル組立分解装置32とAT
Mセル交換装置2にあるATMスイッチ22との間にA
TMセル信号路4を配備する。また、ATMセル交換装
置2の中では、ATMセル組立分解装置23とATMス
イッチ22との間にもATMセル信号路5を配備する。
ATM cell assembling / disassembling devices 14, 23 and 32 are provided in the processors of these devices. Then, the ATM cell assembling / disassembling device 32 and the AT in the call connection control device 3
A with the ATM switch 22 in the M cell switching apparatus 2
The TM cell signal path 4 is provided. In the ATM cell switching device 2, the ATM cell signal line 5 is also provided between the ATM cell assembling / disassembling device 23 and the ATM switch 22.

【0015】一方、回線終端装置1とATMセル交換装
置2はATMセル通話路6で接続されていて、この回線
終端装置1側のインタフェース部にATMセル信号分離
挿入装置13を配備し、また、この装置とATMセル組
立分解装置14との間にATMセル信号路15を配備す
る。
On the other hand, the line terminating device 1 and the ATM cell switching device 2 are connected by the ATM cell communication path 6, and the ATM cell signal separating / inserting device 13 is provided in the interface section of the line terminating device 1 side. An ATM cell signal line 15 is provided between this device and the ATM cell assembling / disassembling device 14.

【0016】さて、今、回線終端装置1のプロセッサ1
1から呼接続制御装置3のプロセッサ31へデータ転送
要求が発生した場合について、このデータ転送のフロー
について述べる。
Now, the processor 1 of the line terminating device 1
The flow of data transfer will be described for the case where a data transfer request is issued from 1 to the processor 31 of the call connection control device 3.

【0017】プロセッサ11はATMセル組立分解装置
14に対して転送データを渡して送信を要求する。AT
Mセル組立分解装置14はこの転送データを図2のAT
Mセルのフォーマットに示すごとく48バイト毎に分割
し、ATMセルのペイロードに順次書き込む。
The processor 11 passes the transfer data to the ATM cell assembling / disassembling apparatus 14 to request the transmission. AT
The M cell assembling / disassembling device 14 uses this transfer data as the AT of FIG.
As shown in the M cell format, it is divided into 48 bytes and sequentially written in the payload of the ATM cell.

【0018】各ATMセルは48バイトの転送データに
5バイトのセルヘッダが付加された53バイトで構成さ
れている。このセルヘッダには交換機で予約した接続先
を示す識別子のVPI(VirtualPath Id
entifier,仮想パス識別子)値/VCI(Vi
rtual Channel Identifier,
仮想チャネル識別子)値が設定される。
Each ATM cell is composed of 53 bytes in which transfer data of 48 bytes and a cell header of 5 bytes are added. This cell header has a VPI (Virtual Path Id) that is an identifier indicating a connection destination reserved by the exchange.
entifier, virtual path identifier) value / VCI (Vi
rtual Channel Identifier,
Virtual channel identifier) value is set.

【0019】これらのセルは順次ATMセル信号分離挿
入装置13に転送され、回線からのATMセルと多重し
てATMスイッチ22へ転送される。
These cells are sequentially transferred to the ATM cell signal separating / inserting device 13, multiplexed with the ATM cells from the line and transferred to the ATM switch 22.

【0020】ATMスイッチ22では、入力されるセル
のVPI値/VCI値でATMセルの交換処理が行なわ
れる。ここでは、予約されたVPI値/VCI値のセル
が入力された場合に呼接続制御装置3宛てのATMセル
信号路4に交換される。なお、この時、セルヘッダはど
の回線終端装置からのATMセルかを識別するための
値、つまり、スイッチの入力ポート番号に対応したVP
I値/VCI値に書き替えられる。
In the ATM switch 22, the ATM cell exchange processing is performed according to the VPI value / VCI value of the input cell. Here, when a cell having a reserved VPI value / VCI value is input, it is exchanged with the ATM cell signal path 4 addressed to the call connection control device 3. At this time, the cell header is a value for identifying from which line terminating device the ATM cell is, that is, the VP corresponding to the input port number of the switch.
It can be rewritten as I value / VCI value.

【0021】呼接続制御装置3内のATMセル組立分解
装置32は、順次ATMセルを受信し転送データに組み
立てなおす。転送データが復元されると、プロセッサ3
1に転送データの受信通知を行なうとともに、送信側の
回線終端装置11に対して応答用のATMセルを送出す
る。この呼接続制御装置3から送信されるATMセル
は、転送先の回線終端装置1またはATMセル交換装置
2を識別するために予約されたVPI値/VCI値が付
与される。
The ATM cell assembling / disassembling device 32 in the call connection control device 3 sequentially receives the ATM cells and reassembles them into transfer data. When the transfer data is restored, the processor 3
1 is notified of the transfer data being received, and an ATM cell for response is sent to the line terminating device 11 on the transmitting side. The ATM cell transmitted from the call connection control device 3 is provided with a VPI value / VCI value reserved for identifying the transfer destination line terminating device 1 or the ATM cell switching device 2.

【0022】最終的に、応答用のATMセルを受信した
ATMセル組立分解装置14は転送が完了したことを認
識でき、転送完了報告をプロセッサ11に通知する。
Finally, the ATM cell assembling / disassembling apparatus 14 which has received the response ATM cell can recognize that the transfer is completed, and notifies the processor 11 of the transfer completion report.

【0023】[0023]

【発明の効果】以上説明したように本発明は、呼接続制
御装置内の主プロセッサとATMセル交換装置内のスイ
ッチ制御プロセッサ、及び、呼接続制御装置内の主プロ
セッサと回線終端装置内の回線終端制御プロセッサの間
で送受信される呼接続制御信号やトラヒック情報等の全
てのデータをATMセルに変換して転送することとした
ので、パケットバスなどの別のバスを使用せずにATM
セル通話路だけを用いてプロセッサ間通信ができるよう
になる。
As described above, the present invention provides the main processor in the call connection control device and the switch control processor in the ATM cell switching device, and the main processor in the call connection control device and the line in the line termination device. Since all data such as call connection control signals and traffic information transmitted and received between the termination control processors are converted into ATM cells and transferred, the ATM bus can be used without using another bus such as a packet bus.
It becomes possible to perform inter-processor communication using only the cell communication path.

【0024】また、バス構成ではなくツリー構成でAT
M交換機を拡張することができるようになるので、伝送
距離の制限に関係なくシステム規模を拡大することが可
能となる。
Further, the AT has a tree structure rather than a bus structure.
Since the M switch can be expanded, the system scale can be expanded regardless of the limitation of the transmission distance.

【0025】さらに、回線終端装置の数に関係なく、A
TM通話路におけるプロセッサ間通信用に割り当てられ
る帯域でデータ転送容量を与えることができる。
Furthermore, regardless of the number of line terminators, A
The data transfer capacity can be provided in the band allocated for inter-processor communication in the TM speech path.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例を示すブロック図FIG. 1 is a block diagram showing an embodiment of the present invention.

【図2】本発明の一実施例において用いられるATMセ
ルのフォーマットを示す図
FIG. 2 is a diagram showing a format of an ATM cell used in an embodiment of the present invention.

【図3】従来の実施例を示すブロック図FIG. 3 is a block diagram showing a conventional embodiment.

【図4】従来の実施例において用いられるパケットのフ
ォーマットを示す図
FIG. 4 is a diagram showing a packet format used in a conventional embodiment.

【符号の説明】[Explanation of symbols]

1 回線終端装置 2 ATMセル交換装置 3 呼接続制御装置 4,5,15 ATMセル信号路 6 ATMセル通話路 7 パケットバス 11,21,31 プロセッサ 12 回線終端部 13 ATMセル信号分離挿入装置 14,23,32 ATMセル組立分解装置 22 ATMスイッチ 16,24,33 パケットバス終端装置 34 パケットバス使用権調停装置 1 Line Termination Device 2 ATM Cell Switching Device 3 Call Connection Control Device 4, 5, 15 ATM Cell Signal Line 6 ATM Cell Speech Line 7 Packet Bus 11, 21, 31 Processor 12 Line Termination Unit 13 ATM Cell Signal Separation Insertion Device 14, 23, 32 ATM cell assembling / disassembling device 22 ATM switch 16, 24, 33 Packet bus terminating device 34 Packet bus usage right arbitrating device

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ATM(Asynchronous T
ransfer Mode、非同期転送モード)交換機
において、 当該交換機を構成する呼接続制御装置と、回線終端装置
と、ATMセル交換装置とは、転送情報をATMセルに
分解またはATMセルを転送情報に組み立てるATMセ
ル組立分解手段をそれぞれ有し、 前記ATMセル交換装置が有するATMスイッチは、前
記呼接続制御装置が有するATMセル組立分解手段と前
記ATMセル交換装置が有するATMセル組立分解手段
とにそれぞれATMセル信号路で接続され、 前記回線終端装置は、当該回線終端装置が有する回線終
端部と前記ATMセル交換装置が有するATMスイッチ
との間に位置してATMセル通話路から特定のATMセ
ル信号を分離挿入するATMセル信号分離挿入手段を有
し、当該ATMセル信号分離挿入手段は更に、当該回線
終端装置が有するATMセル組立分解手段にATMセル
信号路で接続され、 前記呼接続制御装置と、回線終端装置と、ATMセル交
換装置とが有するプロセッサ間で送受される通信情報を
ATMセルに変換して転送することを特徴とするATM
交換機のプロセッサ間通信方式。
1. An ATM (Asynchronous T)
(transfer mode, asynchronous transfer mode) In a switch, a call connection control device, a line terminating device, and an ATM cell switching device that compose the switch are ATM cells that divide transfer information into ATM cells or assemble ATM cells into transfer information. The ATM switch included in the ATM cell switching device has an assembling / disassembling means, and an ATM cell assembling / disassembling device included in the call connection control device and an ATM cell assembling / disassembling device included in the ATM cell switching device, respectively. The line terminating device is located between the line terminating unit of the line terminating device and the ATM switch of the ATM cell switching device, and separates and inserts a specific ATM cell signal from the ATM cell communication line. The ATM cell signal separating / inserting means for Further, the communication information connected to the ATM cell assembling / disassembling means included in the line terminating device by an ATM cell signal path is transmitted and received between the processors included in the call connection control device, the line terminating device, and the ATM cell switching device. ATM characterized by converting into ATM cells and transferring
Inter-processor communication method of exchange.
JP32250893A 1993-12-21 1993-12-21 Inter-processor communication system for atm exchange Pending JPH07177155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32250893A JPH07177155A (en) 1993-12-21 1993-12-21 Inter-processor communication system for atm exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32250893A JPH07177155A (en) 1993-12-21 1993-12-21 Inter-processor communication system for atm exchange

Publications (1)

Publication Number Publication Date
JPH07177155A true JPH07177155A (en) 1995-07-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP32250893A Pending JPH07177155A (en) 1993-12-21 1993-12-21 Inter-processor communication system for atm exchange

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JP (1) JPH07177155A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6304571B1 (en) 1997-10-06 2001-10-16 Fujitsu Limited Multiprocessor type exchange and communication method therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106247A (en) * 1989-09-20 1991-05-02 Oki Electric Ind Co Ltd Maintenance operation control system for electronic exchange

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03106247A (en) * 1989-09-20 1991-05-02 Oki Electric Ind Co Ltd Maintenance operation control system for electronic exchange

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6304571B1 (en) 1997-10-06 2001-10-16 Fujitsu Limited Multiprocessor type exchange and communication method therefor

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