JPS59221060A - Operating system of bi-directional line - Google Patents

Operating system of bi-directional line

Info

Publication number
JPS59221060A
JPS59221060A JP9391283A JP9391283A JPS59221060A JP S59221060 A JPS59221060 A JP S59221060A JP 9391283 A JP9391283 A JP 9391283A JP 9391283 A JP9391283 A JP 9391283A JP S59221060 A JPS59221060 A JP S59221060A
Authority
JP
Japan
Prior art keywords
line
bidirectional
selection
bwt
directional
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.)
Granted
Application number
JP9391283A
Other languages
Japanese (ja)
Other versions
JPH0153837B2 (en
Inventor
Kosuke Iizawa
飯沢　鋼介
Akira Kusaba
草場　彰
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP9391283A priority Critical patent/JPS59221060A/en
Publication of JPS59221060A publication Critical patent/JPS59221060A/en
Publication of JPH0153837B2 publication Critical patent/JPH0153837B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)

Abstract

PURPOSE:To improve both reliability and maintenance performance of a bi- directional line by selecting the bi-directional line at random and therefore preventing the simultaneous selection of said circuit. CONSTITUTION:Bi-directional trunks BWT No.1-No.n are connected to an exchange EX1 at the originating station side as well as to an exchange EX2 of the receiving station side. These bi-directional trunks of both sides are connected to each other by bi-directional lines LINE No.1-No.n. When a selection request for an outgoing line is produced from the originating station, the selection order record BWTIDLE of a bi-directional line selection chain BWTCHAIN is checked to select a bi-directional line number BWT-2 which is advanced from the first head order by an optional fixed number is selected. This selected BW-2 is deleted from the chain BWTCHAIN, and the record of the line applicationis left. Then the LINE No.2 is defined as an outgoing line. The BWT No.2 is deleted from the train of the BWTCHAIN, and the record of application of an incoming line. This prevents the simultaneous use of the LINE.

Description

【発明の詳細な説明】 〔発明の利用分野〕 本発明は、両方向回線で接続（連結）された各交換局に
おいて、同一の両方向回線について出回線としての同時
選択（いわゆる衝突）を防止するための両方向回線運用
方式に関するものである。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention is intended to prevent simultaneous selection of the same two-way line as an outgoing line (so-called collision) in each switching center connected (connected) by a two-way line. This is related to the bidirectional line operation method.

〔発明の背景〕[Background of the invention]

従来の両方向回線運用方式は、−例として、発信局にお
いて、両方向回線を出回線として使用する場合、両方向
回線選択順序の最先頭から選択し、その使用後９に解放
するときは、その両方向回線選択順序の最後尾につない
でおく。一方、着信局において、その両方向回線（入回
線として使用していたもの）を解放するときも、その両
方向回線選択順序の最後尾につなぐようにしていた。The conventional two-way line operation method is as follows: - For example, when a two-way line is used as an outgoing line at the originating station, it is selected from the top of the two-way line selection order, and when it is released at 9 after its use, the two-way line is Connect it to the end of the selection order. On the other hand, when the receiving station releases the bidirectional line (used as an incoming line), the bidirectional line is connected to the end of the bidirectional line selection order.

したがって、今まで使用中であった両方向回線は、両局
において、同一の選択順序となるので、その回線につい
て選択要求（発信）が同時に発生すると、衝突状態とな
るおそれがあった。Therefore, since the two-way lines that have been in use up until now have the same selection order in both stations, if selection requests (calls) for those lines occur simultaneously, there is a risk of a collision situation.

〔発明の目的〕[Purpose of the invention]

本発明の目的は、上記した従来技術の欠点をなくシ、両
方向回線の同時選択を防止することができる両方向回線
運用方式を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a bidirectional line operation system that eliminates the drawbacks of the prior art described above and can prevent simultaneous selection of bidirectional lines.

〔発明の概要〕[Summary of the invention]

本発明に係る両方向回線運用方式の構成は、両方向回線
で連結され、その選択・制御をする機能を有する各交換
局において、両方向回線を使用するときは、発信局側に
おいて、その両方向回線選択チェーンの最先頭から任意
の一定数だけ後位の両方向回線を出回線として選択し、
それを解放するときは、発信局において、その両方向回
線選択チェーンの最先頭（または最後尾）へ戻すように
制御するとともに、着信局において、その両方向回線選
択チェーンの最後尾（または最先頭）へ戻すように制御
するようにしたものである。The configuration of the bidirectional line operation system according to the present invention is that when a bidirectional line is used in each exchange that is connected by a bidirectional line and has the function of selecting and controlling the bidirectional line, the bidirectional line selection chain is set on the originating station side. Select a certain number of bidirectional lines after the top of the line as the outgoing line,
When releasing it, the originating station controls to return it to the beginning (or the end) of the bidirectional line selection chain, and the receiving station returns it to the end (or the beginning) of the bidirectional line selection chain. It is controlled so that it returns to normal.

なお、両方向回線の選択は、その両方向回線選択チェー
ンの最先頭から、同選択ごとに発生するランダム数だけ
後位の順位によるようにするとともに、その解放は、発
信局・着信局ともに両方向回線選択チェーンの最後尾へ
戻すようにしてもよい。In addition, the selection of the two-way line is made from the top of the two-way line selection chain to the next rank by a random number generated for each selection, and the release is performed by selecting the two-way line at both the originating station and the terminating station. It may be returned to the end of the chain.

なお、以上を補足説明すると次のとおりである。A supplementary explanation of the above is as follows.

両方向回線を出回線として選択する場合は、両方向回線
選択チェーンの先頭から任意の一定数だけ順を進めた後
位の両方向回線を選択して使用し、出回線として使用後
に解放するときは、両方向回線選択チェーンの最先頭（
捷たは最後尾）につなぎ（戻し）、両方向回線を入回線
として使用後に解放するときは、両方向回線選択チェー
ンの最後尾（！、たは最先頭）につなぐ。すなわち、両
方向回線といえども、使用時には出回線または入回線に
なることを利用し、回線使用後の解放時に回線の両端で
選択順序を変えるようにするものである。When selecting a two-way line as an outgoing line, select and use the next two-way line advanced by an arbitrary fixed number from the beginning of the two-way line selection chain, and when releasing it after using it as an outgoing line, The top of the line selection chain (
If you want to release the bidirectional line after using it as an incoming line, connect it to the end (!, or the beginning) of the bidirectional line selection chain. That is, even though it is a bidirectional line, when it is used, it becomes an outgoing line or an incoming line, and when the line is released after use, the selection order is changed at both ends of the line.

ここで、出回線選択時に両方向回線選択順序の先頭から
任意の一定数だけ順を進めるのは、選択した回線に障害
がある場合で、かつトラヒックが低くて一方からのみ選
択されるようなときに（例えば夜間において１コールの
みが何度もリトライしているような状況のときに）、何
回も障害の同一回線を選択する可能性を回避するためで
ある。Here, when selecting an outgoing line, advancing an arbitrary fixed number from the beginning of the bidirectional line selection order is when the selected line has a failure and the traffic is low and only one side is selected. This is to avoid the possibility of selecting the same faulty line many times (for example, in a situation where only one call is retried many times at night).

またへ両方向回線を出回線として選択する場合、ランダ
ム数を用いて両方向回線選択順序の先頭からランダム数
だけ順を進めた後位の両方向回線を選択し、解放すると
、きは、出回線９人回線いずれとして使用しても、共に
両方向回線選択チェーンの最後尾につなぐ。When selecting a two-way line as an outgoing line, use a random number to select the second two-way line that is advanced by a random number from the beginning of the two-way line selection order, and release it.If there are 9 outgoing lines. Regardless of which line is used, both are connected to the end of the bidirectional line selection chain.

それは、両方向回線の選択時にランダム化することによ
り、回線解放時は、出回線１人回線いずれの使用方法で
あったかを特に意識しないで済むようにしたものである
。By randomizing the selection of bidirectional lines, when the line is released, the user does not need to be particularly aware of which one of the outgoing lines was used.

〔発明の実施例〕[Embodiments of the invention]

以下、本発明の実施例を図に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.

第１図は、本発明に係る両方向回線運用方式が適用され
る発信局・潜信局間の中継方式図、第２図は、同方式の
一実施例の両方向回線選択チェーンの状態図である。FIG. 1 is a diagram of a relay system between a transmitting station and a covert station to which the two-way line operation system according to the present invention is applied, and FIG. 2 is a state diagram of a two-way line selection chain in an embodiment of the same system. .

ここで、ＥＸＩ、ＥＸ２ば、発信局１着信局の交換機、
ＢＷＴ　（＋１４ｎ）は、両方向回線ＬＩＮＥ（弁１〜
≠１旬に対応する両局の両方トランク、ＢＷＴ（ＪＩＡ
ＩＮは、両方向回線選択チェーン、ＢＷＴ−１〜ｎは、
両方向回線番号（またはアドレス）、ＢＷＴよりＬＥ　
は、両方向回線選択チェーンｌ３ＷＴＣＩ−ＩＡＪＮの
選択順序記録である。Here, EXI, EX2 are the exchanges of the originating station 1 and the receiving station,
BWT (+14n) is a bidirectional line LINE (valve 1~
≠Both trunks of both stations corresponding to 1 season, BWT (JIA
IN is a bidirectional line selection chain, BWT-1 to n are
Bidirectional line number (or address), BWT to LE
is the selection order record of the bidirectional line selection chain l3WTCI-IAJN.

まず、発信局で出回線の選択要求が発生すると、交換機
ＥＸＩは、両方向トランクＢＷＴの１つを出回線として
選択・起動する。これより、着信局の両方向トランクＢ
ＷＴが起動され、交換機ＥＸ２は、起動さり、た両方向
トランクＢＷＴを入回線として使用する。First, when a request for selecting an outgoing line is generated at the originating station, the exchange EXI selects and activates one of the bidirectional trunks BWT as the outgoing line. From this, the terminating station's bidirectional trunk B
The WT is activated and the exchange EX2 is activated and uses the bidirectional trunk BWT as an ingress line.

出回線の選択は、両方向回線選択チェーンＢＷＴ　ＣＩ
−ＩＡ　Ｉ　Ｈの選択順序記録ＢＷＴＩＤＬＥ（上段が
最先頭の両方向回線番号ＢＷＴ−１、下段が最後尾の両
方向回線番号ＢＷＴ−Ｉ〕）を調べた後、最先頭から任
意の一定数（第２図の例の一定数は１）だけ順を進めた
両方向回線番号ＢＷＴ−２を選択しく第２図（＝１）　
）　、両方向回線選択チェーンＢＷＴ　ＣＨＡ　Ｉ　Ｎ
か゛らとりはずしく第２図（ｂ））、両方向回線番号ｌ
３ＷＴ−２について出回線使用の記録を残し、当該両方
向回線ＬＩＮＥ（≠２）を出回線として使用する。Outgoing line selection is performed using the bidirectional line selection chain BWT CI
- After checking the IA IH selection order record BWTIDLE (the top line is the top two-way line number BWT-1, the bottom line is the last two-way line number BWT-I), select an arbitrary fixed number from the top (the second line number BWT-I). In the example shown in the figure, the fixed number should select the bidirectional line number BWT-2, which is advanced by 1) (=1).
), bidirectional line selection chain BWT CHA I N
However, in Figure 2 (b)), the two-way line number l
A record of outgoing line usage is left for 3WT-2, and the bidirectional line LINE (≠2) is used as the outgoing line.

着信局では、起動のあった両方向トランクＢＷＴ（≠２
）を両方向回線選択チェーンＢＷＴＣＨＡＩＮの列から
ばずし、入回線使用の記録を残し、当該両方向ＬＩＮＥ
（＋２）を入回線として使用する。At the receiving station, the activated bidirectional trunk BWT (≠2
) from the column of the bidirectional line selection chain BWTCHAIN, leaving a record of incoming line usage, and
(+2) is used as the incoming line.

発信局において、出回線として使用した両方向回線ＬＩ
ＮＥ（＋、２）を解放する場合は、その回線が出回線使
用か入回線かの記録をみて、両方向回線選択チェーンＢ
ＷＴ（Ｊ−ｉＡ、ＩＮの最先頭に両方向回線番号ＢＷＴ
−２をつなぎこみ（第２図（ｃ））、両方向回線ＬＩＮ
Ｅ（≠２）の解放を行なう。着信局において、入回線使
用の記録のある回線については、両方向回線選択チェー
ンＢＷＴ　ＣＩ−ＴＡ　Ｉ　Ｎの最後尾につなぐ。なお
、両方向回線選択チェーンｌ３ｗ１′ＣＩ−ＩＡＩＮへ
の復帰については、上記とは逆に、出回糺）側を最後尾
へ、また入回線側を最先頭へ戻すようにしても同様な効
果が得られる。Bidirectional line LI used as an outgoing line at the originating station
When releasing NE (+, 2), check the record of whether the line is used as an outgoing line or an incoming line, and select the bidirectional line selection chain B.
WT (J-iA, bidirectional line number BWT at the beginning of IN
-2 (Figure 2 (c)), and connect the two-way line LIN.
Release E (≠2). At the receiving station, a line with a record of incoming line use is connected to the end of the bidirectional line selection chain BWT CI-TA IN. Regarding the return to the bidirectional line selection chain l3w1'CI-IAIN, the same effect can be obtained by returning the outgoing line to the end and the incoming line to the beginning, contrary to the above. can get.

ことで、出回線または入回線として使用した場合の記録
については、一般に出回線使用後にはガードタイミング
をとっているので、その間に行うことが可能である。ま
た、選択順序の任意の位置について選択または戻しくつ
なぎ込み）を行うことも、選択は入回線について従来か
ら行なわれていることであり、つなぎ込みも選択の逆論
理であることから容易に実現が可能である。Therefore, recording when used as an outgoing line or an incoming line can be performed during guard timing since generally a guard timing is set after the outgoing line is used. In addition, it is easy to perform selection or reconnection at any position in the selection order, since selection has traditionally been done for incoming lines, and connection is also the reverse logic of selection. is possible.

次に、第３図は、本発明に係る両方向回線運用方式の他
の実施例の両方向回線選択チェーンの状態図である。Next, FIG. 3 is a state diagram of a bidirectional line selection chain in another embodiment of the bidirectional line operation system according to the present invention.

ここで、ＢＷＴ−Ａ〜ＢＷＴ−７Ｚは、前述のＢＷＴ−
１〜ＢＷＴ−４と同様に＋Ａ−４Ｚまでの両方向回線信
号、Ｃ０ＵＮＴば、ランダム数記憶用のレジスタ（例え
ば、呼数カウンタの下位任意桁で代用してもよい。ン、
Ｍば、その指示のランダム数その他の符号は、第２図に
おける同符号のものと均等のものである。Here, BWT-A to BWT-7Z are the aforementioned BWT-
1 to BWT-4 as well as bidirectional line signals up to +A-4Z, C0UNT, a register for storing a random number (for example, any lower digit of the call number counter may be substituted).
If M, the random numbers and other symbols in the instructions are equivalent to the same symbols in FIG.

出回線の選択は、両方向回線選択チェーンＢＷＴＣＩＩ
ＡＩＨの最先頭からレジスタＣ０ＵＮＴの示すランダム
数へ４の分だけ順を進めた後位の両方向回線番号ＢＷ’
Ｉ’−Ｍを選択しく第３図（ａ））Ｌ、両方向回線選択
チェーンＢＷＴＣＨＡＩＮからとりはずしく第３図（ｂ
））、両方向回線番号ＢＷＴ−Ｍの両方向回線ＬＩＮＥ
（寺Ｍ）を出回線として使用する。Outgoing line selection is performed using the bidirectional line selection chain BWTCII.
Bidirectional line number BW' after proceeding by 4 from the top of AIH to the random number indicated by register C0UNT.
I'-M is selected from the bidirectional line selection chain BWTCHAIN (Fig. 3(a))L, and Fig. 3(b)
)), bidirectional line number BWT-M bidirectional line LINE
(Temple M) is used as the outgoing line.

出回線として使用した両方向回線を解放する場合は、入
回線側と同様に、両方向回線選択チェーンＢＷＴＣ■−
ＩＡＩＮの最後尾につなぎ込み（戻し）、両方向回線Ｌ
ＩＮＥ（≠Ｍ）の解放を行なう。When releasing a bidirectional line used as an outgoing line, use the bidirectional line selection chain BWTC■- in the same way as for the incoming line.
Connect (return) to the end of IAIN, bidirectional line L
Release INE (≠M).

なお、この実施例においても、同線の使用記録について
は、第２図のものと同様である。In this embodiment as well, the usage record of the same line is the same as that shown in FIG. 2.

従来は、両方向回線を使用する両局間で同時に出回線の
使用要求が多く発生すると、同一の両方向回線に対する
両局からの同時起動で衝突が生じることがあり、そのと
きは回線の障害とみなされていた。しかし、上記実施例
によれば、衝突の回数は、約１／１０に減少（例えば６
０本の両方向回線使用届で、１日あたり約１００回から
約１０回に減少）させることができるので、両方向回線
の信頼性、保守性の向上が可能となる。Conventionally, when both stations using a two-way line receive many requests to use the outgoing line at the same time, a conflict may occur due to simultaneous activation of the same two-way line from both stations, in which case it is considered a line failure. It had been. However, according to the above embodiment, the number of collisions is reduced to about 1/10 (for example, 6
With 0 bidirectional line usage notifications, the number of times per day can be reduced from about 100 to about 10, making it possible to improve the reliability and maintainability of bidirectional lines.

〔発明の効果〕〔Effect of the invention〕

以上、詳細に説明したように、本発明によれば、両方向
回線の同時選択を防止することができるので、両方向回
線の信頼性、保守性を向上し、その運用改善に顕著な効
果が得られる。As described in detail above, according to the present invention, it is possible to prevent simultaneous selection of bidirectional lines, thereby improving the reliability and maintainability of bidirectional lines, and achieving significant effects in improving their operation. .

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は、本発明に係る両方向回線運用方式が適用され
る発信局・着信局間の中継方式図、第２図は、同方式の
一実施例の両方向回線選択チェーンの状態図、第３図は
、同他の実施例の両方向回線選択チェーンの状態図であ
る。 ＥＸＩ、ＥＸ２・・・交換機、ＢＷＴ・・・両方向トラ
ンク、ＬＩＮＥ・・・両方向回線、ＢＷＴ−１〜ｎ、Ｂ
ＷＴ−Ａ〜Ｚ・・・両方向回線番号、ＢＷＴＣＩ−ＩＡ
ＩＮ・・・両方向回線選択チェーン、ＢＷＴＩＤＬＥ　
　・・・選択順序記録、Ｃ０ＵＮＴ・・・レジスタ。 代理人　弁理士　福田幸作 （ほか１名） ＄　１　固 ＄　２　目 （Ｌ）1 is a diagram of a relay system between a transmitting station and a terminating station to which the bidirectional line operation system according to the present invention is applied; FIG. 2 is a state diagram of a bidirectional line selection chain in an embodiment of the same system; FIG. 3 is a state diagram of a bidirectional line selection chain of another embodiment. EXI, EX2...exchange, BWT...bidirectional trunk, LINE...bidirectional line, BWT-1~n, B
WT-A to Z...bidirectional line number, BWTCI-IA
IN...Bidirectional line selection chain, BWTIDLE
... Selection order record, C0UNT... register. Agent Patent attorney Kosaku Fukuda (and 1 other person) $1 Fixed $2 (L)

Claims (1)

【特許請求の範囲】 ■０両方向回線で連結され、その選択・制御をする機能
を有する各交換局において、両方向回線を使用するとき
は、発信局において、その両方向回線選択チェーンの最
先頭から任意の一定数だけ後位の両方向回線を出回線と
して選択し、それを解放するときは、発信局において、
その両方向回線選択チェーンの最先頭（または最後尾）
へ戻すように制御するとともに、着信局において、その
両方向回線選択チェーンの最後尾（寸たは最先頭）へ戻
すように制御することを特徴とする両方向回線運用方式
。 ２、特許請求の範囲第１項記載のものにおいて、両方向
回線の選択は、両方向回線選択チェーンの最先頭から、
同選択ごとに発生するランダム数だけ後位の順位による
ようにするとともに、その解放は、発信局・着信局とも
に両方向回線選択チェーンの最後尾へ戻すようにした両
方向回線運用方式。[Claims] ■0 When using a bidirectional line in each exchange that is connected by a bidirectional line and has the function of selecting and controlling the bidirectional line, the originating station selects any one from the top of the bidirectional line selection chain. When selecting a certain number of downstream two-way lines as outgoing lines and releasing them, at the originating station,
The beginning (or end) of that bidirectional line selection chain
A bidirectional line operation method characterized by controlling the receiving station to return the bidirectional line to the end (or the beginning) of the bidirectional line selection chain. 2. In the device described in claim 1, the bidirectional line selection is performed from the top of the bidirectional line selection chain,
A two-way line operation method in which the ranking is determined by a random number generated for each selection, and the release is performed by returning both the originating station and the terminating station to the end of the bidirectional line selection chain.
JP9391283A 1983-05-30 1983-05-30 Operating system of bi-directional line Granted JPS59221060A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9391283A JPS59221060A (en) 1983-05-30 1983-05-30 Operating system of bi-directional line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9391283A JPS59221060A (en) 1983-05-30 1983-05-30 Operating system of bi-directional line

Publications (2)

Publication Number Publication Date
JPS59221060A true JPS59221060A (en) 1984-12-12
JPH0153837B2 JPH0153837B2 (en) 1989-11-15

Family

ID=14095681

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9391283A Granted JPS59221060A (en) 1983-05-30 1983-05-30 Operating system of bi-directional line

Country Status (1)

Country Link
JP (1) JPS59221060A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07162458A (en) * 1993-10-15 1995-06-23 Internatl Business Mach Corp <Ibm> Method for eliminating confliction of cascade switch and itsdevice

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07162458A (en) * 1993-10-15 1995-06-23 Internatl Business Mach Corp <Ibm> Method for eliminating confliction of cascade switch and itsdevice

Also Published As

Publication number Publication date
JPH0153837B2 (en) 1989-11-15

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