JPH0779224A - Wide band isdn terminal adapter - Google Patents
Wide band isdn terminal adapterInfo
- Publication number
- JPH0779224A JPH0779224A JP17112591A JP17112591A JPH0779224A JP H0779224 A JPH0779224 A JP H0779224A JP 17112591 A JP17112591 A JP 17112591A JP 17112591 A JP17112591 A JP 17112591A JP H0779224 A JPH0779224 A JP H0779224A
- Authority
- JP
- Japan
- Prior art keywords
- wide band
- existing terminal
- atm cell
- terminal
- atm
- 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.)
- Withdrawn
Links
Landscapes
- Time-Division Multiplex Systems (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は広帯域ＩＳＤＮネットワ
ーク網に対応していない既存の端末を収容し、広帯域Ｉ
ＳＤＮネットワーク網に接続するためのアダプタ装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention accommodates an existing terminal that does not support a broadband ISDN network,
The present invention relates to an adapter device for connecting to an SDN network.
【０００２】[0002]
【従来の技術】近年、ＡＴＭ（Ａｓｙｎｃｒｏｎｏｕｓ
Ｔｒａｎｓｆｅｒ Ｍｏｄｅ）方式を基本技術とした
広帯域ＩＳＤＮ（Ｂｒｏａｄｂａｎｄ ＩＳＤＮ）の研
究，開発が盛んに行なわれている。2. Description of the Related Art In recent years, ATM (Asynchronous)
Research and development of a wideband ISDN (Broadband ISDN) based on a Transfer Mode (basic technology) have been actively conducted.
【０００３】このＡＴＭ方式は様々な情報形態（連続／
バースト）や広範囲の情報速度（低速／高速）に対応で
きる通信手段であることから、現存する端末や今後新た
に開発されるであろうマルチメディア端末等を含め多種
多様な端末を、統合的に収容しＡＴＭ方式の帯域可変能
力を充分に活用する広帯域ＩＳＤＮ端末アダプタ装置の
開発が必要となってきた。This ATM system has various information formats (continuous /
Burst) and a wide range of information speeds (low speed / high speed), it is possible to integrate various terminals including existing terminals and multimedia terminals which will be newly developed in the future. It has become necessary to develop a wideband ISDN terminal adapter device that accommodates and makes full use of the ATM variable bandwidth capability.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな、広帯域ＩＳＤＮに対応していない既存の端末を収
容して広帯域ＩＳＤＮネットワーク網に接続するための
アダプタ装置は存在しなかった。また、複数の既存端末
を一度に広帯域ＩＳＤＮネットワーク網に接続するアダ
プタ装置も存在しなかった。However, there has been no adapter device for accommodating such an existing terminal that does not support wideband ISDN and connecting it to the wideband ISDN network. Further, there is no adapter device that connects a plurality of existing terminals to the broadband ISDN network at once.
【０００５】[0005]
【課題を解決するための手段】本発明の広帯域ＩＳＤＮ
端末アダプタ装置は、既存端末インタフェース信号を終
端する既存端末終端部とこの既存端末終端部からの情報
をＡＴＭセル化するＡＴＭセル組立／分解部とから構成
した複数個の既存端末回線対応部と、前記ＡＴＭセル組
立／分解部からのＡＴＭセル情報を多重／分離するＡＴ
Ｍセル多重／分離部とＡＴＭセルを広帯域回線インタフ
ェース信号に変換する広帯域回線終端部とから構成され
かつ前記既存端末回線対応部よりも少ない数の広帯域回
線対応部とを備えたことを特徴とする。Broadband ISDN of the present invention.
The terminal adapter device includes a plurality of existing terminal line corresponding units each including an existing terminal terminating unit for terminating an existing terminal interface signal and an ATM cell assembling / disassembling unit for converting information from the existing terminal terminating unit into ATM cells. AT for multiplexing / separating ATM cell information from the ATM cell assembling / disassembling unit
It is characterized in that it comprises an M cell multiplexer / demultiplexer and a wide band line terminating unit for converting an ATM cell into a wide band line interface signal, and has a smaller number of wide band line corresponding units than the existing terminal line corresponding units. .
【０００６】[0006]
【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.
【０００７】図１は本発明の一実施例のブロック図であ
る。FIG. 1 is a block diagram of an embodiment of the present invention.
【０００８】本実施例によると、広帯域ＩＳＤＮ端末ア
ダプタ装置１０は、複数の既存端末回線対応部５０，５
１，…，５ｎと、１つの広帯域回線対応部４０とから構
成されている。各々の既存端末回線対応部５０，５１，
…，５ｎは、広帯域ＩＳＤＮに対応していない既存端末
を終端する機能を有する既存端末終端部３１，３２，
…，３ｎと、ＡＴＭセルを組立／分解する機能を有する
ＡＴＭセル組立／分解部２１，２２，…，２ｎとを備え
ている。According to this embodiment, the broadband ISDN terminal adapter device 10 includes a plurality of existing terminal line corresponding units 50, 5.
1, ..., 5n and one broadband line corresponding unit 40. Each existing terminal line corresponding part 50, 51,
..., 5n are existing terminal terminating units 31, 32, which have a function of terminating existing terminals that are not compatible with the broadband ISDN.
, 3n and ATM cell assembling / disassembling units 21, 22, ..., 2n having a function of assembling / disassembling ATM cells.
【０００９】一方、広帯域回線対応部４０は、広帯域Ｉ
ＳＤＮ回線の終端機能を有する広帯域回線終端部１１
と、この終端部１１とＡＴＭセル組立／分解部２１，２
２，…，２ｎとに接続しＡＴＭセル多重／分離機能を有
するＡＴＭセル多重／分離部１２を備えている。On the other hand, the wide band line corresponding unit 40 has a wide band I
Broadband line terminating unit 11 having SDN line terminating function
And the terminal portion 11 and the ATM cell assembling / disassembling portions 21, 2
2, ..., 2n are provided with an ATM cell multiplexer / separator 12 having an ATM cell multiplexer / separator function.
【００１０】次に動作を説明する。説明の都合上、最初
に既存端末から広帯域ＩＳＤＮネットワークの方向（ア
ップリンク）につき説明を行い、続いて広帯域ＩＳＤＮ
ネットワークから既存端末方向（ダウンリンク）につき
説明を行う。Next, the operation will be described. For convenience of explanation, the direction (uplink) from the existing terminal to the broadband ISDN network will be described first, and then the broadband ISDN network will be described.
The direction from the network to the existing terminal (downlink) will be described.
【００１１】それぞれ異なった又は同一種類の既存端末
インタフェース信号Ｒ１〜Ｒｎはそれぞれの既存端末回
線対応部５０〜５ｎの既存端末終端部３１〜３ｎにより
公知の各種方法で終端処理され、その出力としての情報
がＡＴＭセル組立／分解部２１〜２ｎのセル組立機能に
よりＡＴＭセルへと変換され、次段の広帯域回線対応部
４０に出力される。広帯域回線対応部４０において各既
存端末回線対応部５０〜５ｎからの複数本からなるＡＴ
Ｍセル列はＡＴＭセル多重／分離部１２のセル多重機能
により一つのＡＴＭセル列にされ、次段の広帯域回線終
端機能１１へ出力される。広帯域回線終端機能１１はこ
のＡＴＭセル列を広帯域回線インタフェース信号ＵＮＩ
例えばＳＴＭ−１フレームに変換しネットワークへ送信
する。The different or the same type of existing terminal interface signals R1 to Rn are terminated by the known terminal terminating units 31 to 3n of the respective existing terminal line corresponding units 50 to 5n by various known methods, and their outputs are output. The information is converted into ATM cells by the cell assembling function of the ATM cell assembling / disassembling units 21 to 2n and output to the broadband line corresponding unit 40 at the next stage. In the broadband line corresponding unit 40, an AT including a plurality of existing terminal line corresponding units 50 to 5n
The M cell sequence is made into one ATM cell sequence by the cell multiplexing function of the ATM cell multiplexing / demultiplexing unit 12 and output to the broadband line terminating function 11 at the next stage. The wide band line terminating function 11 sends this ATM cell string to the wide band line interface signal UNI.
For example, it is converted into an STM-1 frame and transmitted to the network.
【００１２】次にダウンリンクについて簡単に説明す
る。広帯域回線終端部１１はネットワークからのＳＴＭ
−１フレームを受信しＡＴＭセルに変換しＡＴＭセル多
重／分離部１２の分離機能へ出力する。この分離機能に
よってＡＴＭセルは複数個のＡＴＭセル組立／分解部２
１〜２ｎの分解機能に出力される。この分解機能はＡＴ
Ｍセルの情報のうち、端末側への情報をとりだし既存端
末終端部３１〜３ｎへ出力し、この既存端末終端部３１
〜３ｎにおいて対応する既存端末へのインタフェース信
号に変換し既存端末へ送信する。Next, the downlink will be briefly described. The broadband line terminal unit 11 is an STM from the network.
The -1 frame is received, converted into an ATM cell, and output to the demultiplexing function of the ATM cell multiplexer / demultiplexer 12. By this separation function, ATM cells are assembled into a plurality of ATM cell assembling / disassembling unit 2
It is output to the decomposition function of 1 to 2n. This decomposition function is AT
Of the M cell information, the information to the terminal side is taken out and output to the existing terminal terminating units 31 to 3n.
In 3n, the interface signal to the corresponding existing terminal is converted and transmitted to the existing terminal.
【００１３】[0013]
【発明の効果】以上説明したように本発明は広帯域ＩＳ
ＤＮ端末アダプタ装置に複数個の既存端末回線対応部を
収容することにより、既存端末装置収容の集中化を可能
にするという効果を有する。As described above, the present invention is a broadband IS.
By accommodating a plurality of existing terminal line corresponding parts in the DN terminal adapter device, it is possible to centralize accommodation of existing terminal devices.
【図１】本発明の一実施例のブロック図である。FIG. 1 is a block diagram of an embodiment of the present invention.
１０ 広帯域ＩＳＤＮ端末アダプタ装置 １１ 広帯域回線終端部 １２ ＡＴＭセル多重／分離部 ４０ 広帯域回線対応部 ２１〜２ｎ ＡＴＭセル組立／分解部 ３１〜３ｎ 既存端末終端部 ５０〜５ｎ 既存端末回線対応部 ＵＮＩ 広帯域回線インタフェース信号 Ｒ１〜Ｒｎ 既存端末インタフェース信号 10 Broadband ISDN terminal adapter device 11 Broadband line terminating unit 12 ATM cell multiplexing / separating unit 40 Broadband line corresponding unit 21 to 2n ATM cell assembling / disassembling unit 31 to 3n Existing terminal terminating unit 50 to 5n Existing terminal line corresponding unit UNI broadband line Interface signals R1 to Rn Existing terminal interface signals
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田所 直昭 東京都港区三田一丁目４番28号日本電気通 信システム株式会社内 (72)発明者 中川 富士夫 東京都港区三田一丁目４番28号日本電気通 信システム株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Naoaki Tadokoro 1-4-2-4 Mita, Minato-ku, Tokyo Inside NEC Corporation (72) Inventor Fujio Nakagawa 1-4-28 Mita, Minato-ku, Tokyo No. NEC Communication System Co., Ltd.
Claims (1)
帯域ＩＳＤＮに非対応の既存端末インタフェース信号を
終端する既存端末終端部とこの既存端末終端部からの情
報をＡＴＭセル化するＡＴＭセル組立／分解部とから構
成した複数個の既存端末回線対応部と、前記ＡＴＭセル
組立／分解部からのＡＴＭセル情報を多重／分離するＡ
ＴＭセル多重／分離部とＡＴＭセルを広帯域回線インタ
ーフェース信号に変換する広帯域回線終端部とから構成
されかつ前記既存端末回線対応部よりも少ない数の広帯
域回線対応部とを備えたことを特徴とする広帯域ＩＳＤ
Ｎ端末アダプタ装置。1. An ISDN terminal adapter device comprising: an existing terminal terminating unit for terminating an existing terminal interface signal not compatible with wideband ISDN; and an ATM cell assembling / disassembling unit for converting information from the existing terminal terminating unit into ATM cells. A configured to multiplex / separate a plurality of existing terminal line corresponding parts and ATM cell information from the ATM cell assembling / disassembling part
It is characterized by comprising a TM cell multiplexer / demultiplexer and a wide band line terminating unit for converting an ATM cell into a wide band line interface signal, and having a smaller number of wide band line corresponding units than the existing terminal line corresponding units. Broadband ISD
N terminal adapter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17112591A JPH0779224A (en) | 1991-07-11 | 1991-07-11 | Wide band isdn terminal adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17112591A JPH0779224A (en) | 1991-07-11 | 1991-07-11 | Wide band isdn terminal adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0779224A true JPH0779224A (en) | 1995-03-20 |
Family
ID=15917449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17112591A Withdrawn JPH0779224A (en) | 1991-07-11 | 1991-07-11 | Wide band isdn terminal adapter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0779224A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08316987A (en) * | 1995-05-16 | 1996-11-29 | Nec Corp | Isdn terminal adapter device |
| US6424662B1 (en) | 1996-09-03 | 2002-07-23 | Hitachi, Ltd. | Router apparatus using ATM switch |
-
1991
- 1991-07-11 JP JP17112591A patent/JPH0779224A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08316987A (en) * | 1995-05-16 | 1996-11-29 | Nec Corp | Isdn terminal adapter device |
| US6424662B1 (en) | 1996-09-03 | 2002-07-23 | Hitachi, Ltd. | Router apparatus using ATM switch |
| US6980553B2 (en) | 1996-09-03 | 2005-12-27 | Hitachi, Ltd. | Router apparatus using ATM switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Application deemed to be withdrawn because no request for examination was validly filed |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19981008 |