JPH02271752A - Relay line selection system - Google Patents
Relay line selection systemInfo
- Publication number
- JPH02271752A JPH02271752A JP1093415A JP9341589A JPH02271752A JP H02271752 A JPH02271752 A JP H02271752A JP 1093415 A JP1093415 A JP 1093415A JP 9341589 A JP9341589 A JP 9341589A JP H02271752 A JPH02271752 A JP H02271752A
- Authority
- JP
- Japan
- Prior art keywords
- line
- lines
- trunk line
- relay
- error status
- 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
Links
- 238000010187 selection method Methods 0.000 claims description 6
- 230000015654 memory Effects 0.000 abstract description 10
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000009499 grossing Methods 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
- Communication Control (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はパケット交換機の中継回線選択方式に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a trunk line selection method for a packet switch.
従来、中継口ｉ選択方式として、中継回線の選択時にお
いて、同一中継回線を選択する回数が平滑化される様に
中継回線順序選択方式が一般的にとられていた。Conventionally, as a relay port i selection method, a trunk line order selection method has generally been adopted so that the number of times the same trunk line is selected is smoothed when selecting a trunk line.
上述した従来の順序選択方式の場合、中継回線ごとの中
継回線の選択数は平滑化されるが、回線品質にばらつき
がある為に、中継回線ごとの信頼性にばらつきが発生す
る。その結果、中継回線の品質が中継回線ごとに異なり
選択された中継回線によるサービスの平滑化が保たれな
い問題があった。In the case of the above-mentioned conventional order selection method, the number of trunk lines selected for each trunk line is smoothed, but because the line quality varies, the reliability of each trunk line varies. As a result, there is a problem in that the quality of the trunk line varies depending on the trunk line, and smooth service cannot be maintained using the selected trunk line.
本発明の中継回線選択方式は複数のパケット交換機から
構成されるパケット網において、パケット交換機が中継
回線を選択する際、国際勧告Ｘ。The trunk line selection method of the present invention complies with International Recommendation X when a packet switch selects a trunk line in a packet network consisting of a plurality of packet switches.
７５に従うインタフェースを持つ複数の中継回線のうち
１回線を選択するために中継回線のエラーステータスを
周期的に監視し、スループットクラスで中継回線を選択
したのちこの中継回線のエラーが多いときは次の中継回
線を選択する。In order to select one of the multiple trunk lines with an interface that conforms to 75, the error status of the trunk line is periodically monitored, and after selecting the trunk line based on the throughput class, if there are many errors in this trunk line, the following steps are taken: Select a trunk line.
次に、本発明の実施例について図面を参照して説明する
。Next, embodiments of the present invention will be described with reference to the drawings.
第１図はパケット交換機１に中継回線１００゜１０１．
１０２及び端末回線１１０，１１１゜１１２が接続され
ている状態を示し、中継回線１００．１０１．１０２は
中継回線群を形成している。In FIG. 1, a packet switch 1 is connected to a trunk line 100°101.
102 and terminal lines 110, 111, and 112 are connected, and trunk lines 100, 101, and 102 form a trunk line group.
第２図（ａ）は中継回線ごとのエラーステータスデータ
を格納するメモリを表した図である。メモリ２００，２
０１．２０２はそれぞれ中継回線１００．１０１．１０
２のエラーステータスデータを格納する。更に、メモリ
２００〜２０３は第２図（ｂ）に示す構造を有する。FIG. 2(a) is a diagram showing a memory that stores error status data for each trunk line. Memory 200,2
01.202 are trunk lines 100.101.10 respectively
2 error status data is stored. Furthermore, the memories 200 to 203 have the structure shown in FIG. 2(b).
第３図は中継回線選択時の処理フローを示し、中継回線
１００，１０１，１０２において、呼が継がるまでの再
送回数をカウントし、周期的にメモリ２００，２．０１
．２０２に格納する。カウントメモリ上には前回カウン
ト時のデータを残しておく。第３図中の“中継回線品質
チエツク″では、スループットチエツクで選択された回
線のメモリ内のエラーカウントとその前回比から回線品
質を判断する。すなわち、“中継回線品質チェックパを
行うことにより、信頼性の高い中継回線を選択すること
ができる。FIG. 3 shows the processing flow when selecting a trunk line, in which the trunk lines 100, 101, and 102 count the number of retransmissions until the call is continued, and the memory 200, 2.0
．． 202. The data from the previous count is left on the count memory. In the "relay line quality check" shown in FIG. 3, the line quality is determined from the error count in the memory of the line selected in the throughput check and its previous comparison. In other words, by performing a trunk line quality check, a highly reliable trunk line can be selected.
以上説明した様に本発明によれば、中継回線の選択に際
し、中継回線ごとの中継回線のエラーステータスを周期
的に監視し、エラーが多い中継回線を回避して選択する
ことにより、選ばれた中継回線に依存する回線の高品質
化を図ることができる。As explained above, according to the present invention, when selecting a trunk line, the error status of each trunk line is periodically monitored, and the selected trunk line is selected by avoiding trunk lines with many errors. It is possible to improve the quality of lines that depend on relay lines.
第１図は本発明の一実施例を示す接続構成図である。
１・・・パケット交換機、１００〜１０２・・・中継回
線、１１０〜１１２・・・端末回線。
第２図は同実施例において中継回線ごとのエラーステー
タスデータを格納するメモリを示す図である。
２００〜２０２・・・中継回線１００〜１０２に対応し
たエラーステータスデータを格納するメモリ。
第３図は同実施例における中継回線選択の処理フローを
示す図である。
男 １ 口FIG. 1 is a connection configuration diagram showing an embodiment of the present invention. 1...Packet switch, 100-102...Relay line, 110-112...Terminal line. FIG. 2 is a diagram showing a memory that stores error status data for each trunk line in the same embodiment. 200-202: Memory for storing error status data corresponding to trunk lines 100-102. FIG. 3 is a diagram showing the processing flow of trunk line selection in the same embodiment. Man 1 mouth
Claims (1)
て、パケット交換機が中継回線を選択する際、国際勧告
Ｘ．７５に従うインタフェースを持つ複数の中継回線の
うち１回線を選択するために中継回線のエラーステータ
スを周期的に監視し、スループットクラスで中継回線を
選択したのちこの中継回線のエラーが多いときは次の中
継回線を選択することを特徴とする中継回線選択方式。In a packet network consisting of multiple packet switches, when a packet switch selects a trunk line, International Recommendation X. In order to select one of the multiple trunk lines with an interface that conforms to 75, the error status of the trunk line is periodically monitored, and after selecting the trunk line based on the throughput class, if there are many errors in this trunk line, the following steps are taken: A trunk line selection method characterized by selecting a trunk line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1093415A JPH02271752A (en) | 1989-04-12 | 1989-04-12 | Relay line selection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1093415A JPH02271752A (en) | 1989-04-12 | 1989-04-12 | Relay line selection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02271752A true JPH02271752A (en) | 1990-11-06 |
Family
ID=14081670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1093415A Pending JPH02271752A (en) | 1989-04-12 | 1989-04-12 | Relay line selection system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02271752A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0575610A (en) * | 1991-09-17 | 1993-03-26 | Fujitsu Ltd | Method and device for monitoring system audit |
-
1989
- 1989-04-12 JP JP1093415A patent/JPH02271752A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0575610A (en) * | 1991-09-17 | 1993-03-26 | Fujitsu Ltd | Method and device for monitoring system audit |
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