JPS6351588B2 - - Google Patents
Info
- Publication number
- JPS6351588B2 JPS6351588B2 JP8774281A JP8774281A JPS6351588B2 JP S6351588 B2 JPS6351588 B2 JP S6351588B2 JP 8774281 A JP8774281 A JP 8774281A JP 8774281 A JP8774281 A JP 8774281A JP S6351588 B2 JPS6351588 B2 JP S6351588B2
- Authority
- JP
- Japan
- Prior art keywords
- line
- lines
- call
- destination
- reserved
- 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.)
- Expired
Links
- 239000000725 suspension Substances 0.000 claims description 3
- 238000010187 selection method Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000872 buffer Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/22—Arrangements for supervision, monitoring or testing
- H04M3/36—Statistical metering, e.g. recording occasions when traffic exceeds capacity of trunks
Description
【発明の詳細な説明】
本発明は、異なる呼種が同一回線を共用する回
線交換網における回線選択方式に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a line selection method in a line switched network in which different call types share the same line.
一般に回線交換網においては、対地間に回線を
すべて設備することは極めて不経済であるので、
中継交換機を導入して、異なる対地呼で同一の回
線を利用するようにして経済的な回線交換網を実
現している。第１図は電話網の例であつて、１，
２，３，４，５，６，７，１１，１２，１３，１
４，１５は交換機、２１〜３４は回線である。
こゝで簡単のために、各回線を片方向回線（例え
ば、交換機１１から１２への呼と逆向きの呼は異
なつた回線を使用する）とし、第１図の各回線は
２つの片方向回線を表記しているものとする。い
ま交換機１１から１２へ向う回線２８に注目する
と、交換機３，４，５への対地呼が回線２８を共
用することになる。回線２８は３つの対地への平
常呼量に基づいて一定の接続品質を満足するよう
に設備設計が行なわれる。従つて、各対地呼の総
呼量が平常呼量以内であれば一定の接続品質が保
証されるが、総呼量が平常呼量を越えると接続品
質が満されなくなる。特に特定対地呼の呼量が増
加すると他対地呼の品質まで影響を受け、極端な
場合には特定対地呼に回線２８が占有されてしま
い、他の対地呼に対して全く回線の割当てが不可
能になる恐れも生じる。 Generally, in a circuit-switched network, it is extremely uneconomical to install all the circuits between the ground and the ground.
By introducing trunk exchanges and using the same line for calls to different destinations, an economical circuit-switched network has been realized. Figure 1 is an example of a telephone network, with 1,
2, 3, 4, 5, 6, 7, 11, 12, 13, 1
4 and 15 are exchanges, and 21 to 34 are lines.
For simplicity, each line is assumed to be a one-way line (for example, a call from exchange 11 to 12 and a call in the opposite direction use a different line), and each line in FIG. It is assumed that the line is indicated. If we now pay attention to the line 28 going from the exchange 11 to the exchange 12, the line 28 will be shared by calls to exchanges 3, 4, and 5. The equipment for the line 28 is designed to satisfy a certain connection quality based on the normal call volumes to the three destinations. Therefore, if the total call volume of each destination call is within the normal call volume, a certain level of connection quality is guaranteed, but if the total call volume exceeds the normal call volume, the connection quality is no longer satisfied. In particular, if the volume of calls to a specific destination increases, the quality of calls to other destinations will be affected, and in extreme cases, the line 28 will be occupied by calls to a specific destination, and no line will be allocated to other calls. There is also the possibility that this may become possible.
このように、同一の回線を異なつた対地呼で共
用する方法は、個別に回線を設けるよりも回線を
効率よく使用できるが、共用化による相互の干渉
が生じる欠点がある。 In this way, the method of sharing the same line for different destination calls can use the line more efficiently than providing separate lines, but it has the disadvantage that mutual interference occurs due to sharing.
これまでは異なる呼種として対地別の呼を例に
とつて説明したが、各種サービス、例えば電話、
フアクシミリ、データ等を１つの網で扱うサービ
ス総合網では、異なる呼種としてサービス別の呼
種があり、この場合、例えばフアクシミリ呼が回
線を独占し、電話のサービスが圧迫されるなど、
上記と同様な問題が生じる。 Up until now, we have explained calls by area as different call types, but we have also explained various services such as telephone calls,
In a comprehensive service network that handles facsimile, data, etc. in one network, there are call types for each service as different call types.
A problem similar to the one above arises.
本発明は上記従来の欠点を解決するため、各呼
種の使用回線数および空き回線数を監視し、各呼
種の使用回線数があらかじめ定めた値（留保停止
数）より小さい場合、あるいは該回線の空き回線
数があらかじめ定めた値（留保回線数）より大き
いときに該呼種の回線選択を許可するもので以
下、異なる呼種として対地別呼を例にとり、図面
について詳細に説明する。 In order to solve the above-mentioned conventional drawbacks, the present invention monitors the number of lines in use and the number of free lines for each call type, and if the number of lines in use for each call type is smaller than a predetermined value (the number of suspended lines) or When the number of available lines is greater than a predetermined value (number of reserved lines), line selection of the call type is permitted.Hereinafter, the drawing will be described in detail using a call to a different area as an example of a different call type.
第２図は本発明の一実施例で回線選択制御部を
示す。なお、この回線選択制御部は回線対応、例
えば第１図の回線３１対応に設けられる。図にお
いて、５１は空き回線数を示すレジスタ、５２は
留保回線数を記憶するレジスタ、５３は各対地呼
の使用回線数および各対地呼毎にあらかじめ定め
た回線数（留保停止数という）を記憶するメモ
リ、５４はメモリ５３の特定番地である。メモリ
５３の１語は２つのフイールド５５，５６をも
ち、５５は使用回線数を記憶するフイールド、５
６は留保停止数を記憶するフイールドである。５
７，５８は比較回路、５９はレジスタ、６０，６
１はレジスタ５９のフイールド、６２はOR回
路、６３は比較回路５７の出力、６４は比較回路
５８の出力、６５はOR回路６２の出力、６６は
レジスタ５１の入力、６７はレジスタ５２の入
力、６８はメモリ５３のアドレス線、６９は加算
回路である。 FIG. 2 shows a line selection control section in one embodiment of the present invention. Note that this line selection control section is provided for each line, for example, for line 31 in FIG. In the figure, 51 is a register that indicates the number of idle lines, 52 is a register that stores the number of reserved lines, and 53 is a register that stores the number of lines used for each destination call and the number of lines determined in advance for each destination call (referred to as the number of reserved lines). 54 is a specific address of the memory 53. One word of the memory 53 has two fields 55 and 56, 55 is a field for storing the number of lines in use;
6 is a field that stores the number of reserved stops. 5
7, 58 are comparison circuits, 59 are registers, 60, 6
1 is the field of the register 59, 62 is the OR circuit, 63 is the output of the comparison circuit 57, 64 is the output of the comparison circuit 58, 65 is the output of the OR circuit 62, 66 is the input of the register 51, 67 is the input of the register 52, 68 is an address line of the memory 53, and 69 is an adder circuit.
こゝで、第１図の交換機１１から交換機１２へ
の呼を回線３１を通し、交換機１５を経由して選
択する場合を例にとつて、第２図の回線選択制御
部の動作を説明する。なお、第２図のレジスタ５
１は入力６６を介して空き回線数が常に更新され
ている。 The operation of the line selection control section in FIG. 2 will now be explained, taking as an example the case where a call from exchange 11 to exchange 12 in FIG. 1 is selected via line 31 and via exchange 15. . Note that register 5 in Figure 2
1, the number of free lines is constantly updated via the input 66.
さて、回線３１は交換機１１から交換機１５を
経由して交換機１２，１３，１４の対地呼で共用
される。いま交換機１１から交換機１２への呼が
発生すると、アドレス線６８に交換機１２の対地
に対応する番地が設定され、例えば特定番地５４
が該交換機１２の対地に対応するものと仮定する
と、この特定番地５４の内容がレジスタ５９に読
出され、レジスタ５９のフイールド６０には該対
地の使用回線数が、フイールド６１には該対地の
留保停止数がセツトされる。フイールド６０とフ
イールド６１の内容は比較回路５８で比較され
る。使用回線数が留保停止数より小のとき、すな
わち、フイールド６０の内容＜フイールド６１の
内容のとき比較回路５８の出力６４は論理“１”
になる。この論理“１”は該対地の回線選択を許
可することを意味する。また、同時に該回線３１
の空き回線数と留保回線数を示すレジスタ５１と
５２の内容が比較回路５７で比較される。該回線
３１の空き回線数が留保回線数より大のとき、す
なわち、レジスタ５１の内容＞レジスタ５２の内
容のとき、比較回路５７の出力６３は論理“１”
になる。この論理“１”は該対地の回線選択を許
可することを意味する。比較回路５７，５８の出
力６３，６４はOR回路６２に入力される。この
OR回路６２の出力６５が論理“１”のとき該対
地の回線選択が許可され、回線が捕捉された場合
には、同時にフイールド６０の内容が加算回路６
９を介して＋１され、その後、レジスタ５９の内
容が特定番地５４に書込まれて、交換機１２の対
地の使用回線数が更新される。また、入力６６を
介して当該回線３１の空き回線数も更新される。 Now, the line 31 is shared by the exchanges 12, 13, and 14 for calls from the exchange 11 to the exchange 15 via the exchange 15. When a call is made from the exchange 11 to the exchange 12, an address corresponding to the destination of the exchange 12 is set on the address line 68, for example, a specific address 54.
Assuming that corresponds to the destination of the exchange 12, the contents of this specific address 54 are read into the register 59, the field 60 of the register 59 indicates the number of lines in use for the destination, and the field 61 indicates the number of lines reserved for the destination. The number of stops is set. The contents of field 60 and field 61 are compared by comparison circuit 58. When the number of used lines is smaller than the number of reserved suspensions, that is, when the content of field 60<the content of field 61, the output 64 of the comparison circuit 58 is logic "1".
become. This logic "1" means that line selection for the destination is permitted. At the same time, the line 31
A comparison circuit 57 compares the contents of registers 51 and 52 indicating the number of free lines and the number of reserved lines. When the number of vacant lines of the line 31 is greater than the number of reserved lines, that is, when the contents of the register 51>the contents of the register 52, the output 63 of the comparison circuit 57 becomes logic "1".
become. This logic "1" means that line selection for the destination is permitted. Outputs 63 and 64 of the comparison circuits 57 and 58 are input to an OR circuit 62. this
When the output 65 of the OR circuit 62 is logic "1", line selection of the target destination is permitted, and when the line is captured, the contents of the field 60 are simultaneously added to the adder circuit 6.
After that, the contents of the register 59 are written to the specific address 54, and the number of used lines to the exchange 12 is updated. Further, the number of vacant lines of the line 31 is also updated via the input 66.
以上まとめると、該対地の使用回線数が該対地
の留保停止数よりも小さいかあるいはそれ以上で
も回線の空き回線数が留保停止数よりも多い時
に、該回線の選択が許可される。ただし、出力６
５が論理“１”になり選択が許可されても、空き
回線が無いときは、回線の選択ができないことは
云うまでもない。従つて該対地の呼量が増加し、
使用回線数が該対地の留保停止数以上のときは、
空き回線数が留保回線数よりも多いときのみ選択
を許されるので、該対地呼のみが不当に回線を占
領することはなく、他対地呼の回線選択を不当に
圧迫することはない。逆に他対地の呼が増加した
場合、該対地の回線選択は難かしくなるが、該対
地の使用回線数が該対地の留保停止数より小さけ
れば、該対地呼の回線選択は無条件で許可される
ので、該対地呼の回線選択が極端に妨害されるこ
とがなく、サービスの均一性を保つことができ
る。 In summary, when the number of lines in use at the destination is smaller than or greater than the number of reserved outages at the destination, but the number of idle lines is greater than the number of reserved outages, selection of the line is permitted. However, output 6
Needless to say, even if 5 becomes logic "1" and selection is permitted, if there is no free line, selection of a line cannot be made. Therefore, the call volume to that destination increases,
If the number of lines in use is greater than the number of reserved outages for the destination,
Since selection is allowed only when the number of vacant lines is greater than the number of reserved lines, the call to the destination does not unduly occupy the line, and the line selection of other calls to the destination is not unduly pressured. On the other hand, if the number of calls to other destinations increases, it becomes difficult to select a line for that destination, but if the number of lines in use for that destination is smaller than the number of suspended lines for that destination, line selection for calls to that destination is unconditionally permitted. Therefore, the line selection for the destination call is not significantly interfered with, and service uniformity can be maintained.
メモリ５３に記憶される各対地の留保停止数
は、通常、各対地の設計負荷で回線３１を比例配
分した値にすればよい。また、レジスタ５２に記
憶される留保回線数は、それが多い程サービスの
均一性が保たれるが、回線の効率が若干低下する
ので、必要最小限が望ましい。対地数、回線数に
もよるが、（対地数）×（１〜２回線）程度で充分
である。なお、留保停止数、留保回線数はトラヒ
ツク状況に応じて変更することも可能である。 Normally, the number of reserved outages for each station stored in the memory 53 may be a value obtained by proportionally distributing the line 31 based on the design load of each station. Further, as the number of reserved lines stored in the register 52 increases, the uniformity of service is maintained, but the efficiency of the line decreases slightly, so it is desirable to keep the number to the minimum necessary. Although it depends on the number of destinations and the number of lines, approximately (number of destinations) x (1 to 2 lines) is sufficient. Note that the number of reserved suspensions and the number of reserved lines can be changed depending on the traffic situation.
上記説明では、対地として第１図における交換
機１２，１３，１４等の対地に分けたが、対地と
して交換機３，４，５，６，７等のように、対地
をより細かく分類することも可能である。また、
例として回線３１を用いたが、他の回線２８等に
も適用できることは明らかである。 In the above explanation, the destination is divided into exchanges 12, 13, 14, etc. in Figure 1 as the destination, but it is also possible to classify the destination more finely, such as exchanges 3, 4, 5, 6, 7, etc. It is. Also,
Although the line 31 is used as an example, it is obvious that the present invention can be applied to other lines such as the line 28.
また、上記説明では、異なる呼種として対地別
呼を例にとつて説明したが、第２図のメモリ５３
に記憶する情報を、例えばサービス種別呼毎に対
応させることもでき、本発明は単に異なる呼種と
して対地別呼に限るものではない。 In addition, in the above explanation, a call to a specific destination was explained as an example of a different call type, but the memory 53 in FIG.
For example, the information stored in the service type can be made to correspond to each service type call, and the present invention is not limited to calls that are simply different call types.
以上説明したように、本発明によれば、各呼種
の使用回線数があらかじめ定めた値（留保停止
線）より小さいか、または、空き回線数があらか
じめ定めた値（留保回線数）より大きいときの
み、回線の選択が許可されるため、特定の呼種が
増加した場合でも回線が特定の呼種に過剰に独占
されることがなく、かつ他の呼種には留保されて
いる回線が優先的に割当てられるため、特定呼種
の圧迫から保護され、サービスの均一化が図られ
る。また、空き回線数が留保回線数よりも大きい
ときは、各呼種の使用回線数のいかんにかゝわら
ず、回線の選択が許可されるため、回線を有効に
使用することができる。 As explained above, according to the present invention, the number of lines in use for each call type is smaller than a predetermined value (reserved stop line), or the number of idle lines is larger than a predetermined value (number of reserved lines). Since line selection is only allowed at certain times, even if the number of specific call types increases, the line will not be monopolized excessively by a specific call type, and there will be lines reserved for other call types. Since they are allocated preferentially, they are protected from pressure on specific call types, and service is made more uniform. Furthermore, when the number of available lines is greater than the number of reserved lines, line selection is permitted regardless of the number of lines in use for each call type, so lines can be used effectively.
さらに本発明は単に回線の選択のみならず、異
なる種別のユーザが共用資源を使用する各種シス
テムに応用できるものであり、例えば電話交換機
における信号送受装置、データ処理装置における
バツフア等にも広く応用できるものである。 Furthermore, the present invention is applicable not only to line selection, but also to various systems in which different types of users use shared resources; for example, it can be widely applied to signal transmitting and receiving devices in telephone exchanges, buffers in data processing devices, etc. It is something.
第１図は電話網の一例を示す図、第２図は本発
明の一実施例の構成図である。
１，２，３，４，５，６，７，１１，１２，１
３，１４，１５……交換機、２１〜３４……回
線、５１，５２……レジスタ、５３……メモリ、
５４……特定番地、５５，５６……フイールド、
５７，５８……比較回路、５９……レジスタ、６
０，６１……フイールド、６２……OR回路、６
３，６４，６５……出力、６６，６７……入力、
６８……アドレス線、６９……加算回路。
FIG. 1 is a diagram showing an example of a telephone network, and FIG. 2 is a configuration diagram of an embodiment of the present invention. 1, 2, 3, 4, 5, 6, 7, 11, 12, 1
3, 14, 15... Exchange, 21-34... Line, 51, 52... Register, 53... Memory,
54...Specific address, 55, 56...Field,
57, 58... Comparison circuit, 59... Register, 6
0, 61...Field, 62...OR circuit, 6
3,64,65...output, 66,67...input,
68...address line, 69...addition circuit.
Claims (1)
網において、各呼種の回線選択要求時、該呼種の
使用回線数があらかじめ定めた留保停止数より小
さいか、あるいは該回線の空き回線数があらかじ
め定めた留保回線数より大きいか比較し、そのい
ずれかの条件が満足されているときに該呼種の該
回線の選択を許可することを特徴とする回線選択
方式。1 In a circuit-switched network where different call types share the same line, when a line selection request for each call type is made, the number of lines in use for that call type is smaller than the predetermined number of reserved suspensions, or the number of vacant lines for that line. A line selection method characterized by comparing whether the number of reserved lines is greater than a predetermined number of reserved lines, and permitting selection of the line of the call type when either of the conditions is satisfied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8774281A JPS57202170A (en) | 1981-06-08 | 1981-06-08 | Line selecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8774281A JPS57202170A (en) | 1981-06-08 | 1981-06-08 | Line selecting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57202170A JPS57202170A (en) | 1982-12-10 |
| JPS6351588B2 true JPS6351588B2 (en) | 1988-10-14 |
Family
ID=13923377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8774281A Granted JPS57202170A (en) | 1981-06-08 | 1981-06-08 | Line selecting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57202170A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02129185U (en) * | 1989-04-01 | 1990-10-24 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS592475A (en) * | 1982-06-28 | 1984-01-09 | Nippon Telegr & Teleph Corp <Ntt> | System for controlling loss probability on type of call |
| JP2649561B2 (en) * | 1988-09-30 | 1997-09-03 | 日本電信電話株式会社 | Dynamic reservation control method |
| CA2001203C (en) * | 1988-10-24 | 2001-02-13 | Thomas P. Demuth, Jr. | Novel antimicrobial dithiocarbamoyl quinolones |
-
1981
- 1981-06-08 JP JP8774281A patent/JPS57202170A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02129185U (en) * | 1989-04-01 | 1990-10-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57202170A (en) | 1982-12-10 |
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