JPH01151350A - Interoffice continuity testing method in digital line - Google Patents
Interoffice continuity testing method in digital lineInfo
- Publication number
- JPH01151350A JPH01151350A JP31006987A JP31006987A JPH01151350A JP H01151350 A JPH01151350 A JP H01151350A JP 31006987 A JP31006987 A JP 31006987A JP 31006987 A JP31006987 A JP 31006987A JP H01151350 A JPH01151350 A JP H01151350A
- Authority
- JP
- Japan
- Prior art keywords
- digital
- test pattern
- receiving circuit
- line
- continuity
- 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
- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 238000010998 test method Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001934 delay Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ディジタル自動交換機のディジタル回線にお
ける局間導通試験方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for testing continuity between offices on a digital line of a digital automatic exchange.
（従来技術）
従来、この種の局間導通試験においては、起呼後に発信
局より通話回線に電話帯域内音声周波数を送出し、着信
局は、通話回線トランクに折返しトランクを接続する。(Prior Art) Conventionally, in this type of inter-office continuity test, after a call has been made, the originating station sends a voice frequency within the telephone band to the telephone line, and the receiving station connects a return trunk to the telephone line trunk.
発信局は対局より折り返された音声周波数を検出するこ
とにより、通話路の正常性を確認するという方法をとっ
ていた。The transmitting station used a method of confirming the normality of the communication path by detecting the voice frequency returned by the opposing station.
（発明が解決しようとする問題点）
２上述した従来の局間導通試験方法は接続遅延が発生す
るばかりでなく、近年の伝送路のディジタル化に伴ない
、分岐装置等により交換機に収容される回線群（例えば
２４チャネル多重）が必ずしも伝送路の１方路となると
は限らず、従来用いていたＰＣＭ断、対装置警報等によ
る障害だけでは導通不良と判断できなくなってきている
。このため、ディジタル回線においても、従来の導通試
験方法を用いなければならず、接続遅延が生じるという
欠点がある。(Problems to be Solved by the Invention) 2. The conventional inter-office continuity test method described above not only causes connection delays, but also has the disadvantage that, with the recent digitalization of transmission lines, it is necessary to accommodate the connection delay in switching equipment using branching devices, etc. A group of lines (for example, 24 channel multiplex) does not necessarily constitute a single transmission line, and it is no longer possible to determine a continuity failure solely from failures such as PCM disconnection or device alarms, which were used in the past. For this reason, even in digital lines, conventional continuity testing methods must be used, which has the disadvantage of causing connection delays.
（問題点を解決するための手段）
本発明は、ディジタル回線のチャネル毎に対応したディ
ジタル試験パターン送信回路と、ディジタル試験パター
ン受信回路を用いることにより、回線が空の状態で該当
チャネルの導通が行えるようにしたものである。(Means for Solving the Problems) The present invention uses a digital test pattern transmitting circuit and a digital test pattern receiving circuit that correspond to each channel of a digital line, so that continuity of the corresponding channel can be established when the line is empty. It has been made possible to do so.
（実施例）
次に、本発明を実施例について図面を参照して説明する
。(Example) Next, an example of the present invention will be described with reference to the drawings.
第１図は本発明の実施例に係るディジタル回線通話シス
テムのブロック図である。両局のディジタル自動交換機
ｌは、ディジタル通話トランク３を介してディジタル搬
送回線６により接続されており、ディジタル通話トラン
ク３が空の状態でディジタル自動交換機制御部２はディ
ジタル試験パターン送出回路４に対し試験パターンの送
出を指示し、ディジタル試験パターン受信回路５に対し
試験パターン受信指示をする。ディジタル試験パターン
受信回路５は、対局のディジタル試験パターン送出回路
４より送出されてくる試験パターンをチエツクすること
により、局間の導通を試験している。FIG. 1 is a block diagram of a digital line communication system according to an embodiment of the present invention. The digital automatic exchanges l of both stations are connected by a digital carrier line 6 via a digital call trunk 3, and when the digital call trunk 3 is empty, the digital automatic switch control unit 2 sends a digital test pattern sending circuit 4 to the digital call trunk 3. It instructs the transmission of the test pattern and instructs the digital test pattern receiving circuit 5 to receive the test pattern. The digital test pattern receiving circuit 5 tests continuity between stations by checking the test pattern sent from the digital test pattern sending circuit 4 of the opposing station.
ディジタル自動交換機１に呼が発生し、ディジタル搬送
回線６への発信呼であれば、ディジタル自動交換機制御
部２はディジタル試験パターン受信回路５へ導通試験の
良否確認を行い、良であれば接続処理を開始する。When a call occurs in the digital automatic exchange 1 and is an outgoing call to the digital carrier line 6, the digital automatic exchange control unit 2 checks the continuity test on the digital test pattern receiving circuit 5, and if it is good, it processes the connection. Start.
（発明の効果）
以上説明したように本発明は、ディジタル回線毎に空の
状態にディジタル試験パターン送受回路を用いることに
より、起呼前に該当回線の導通試験が実施できる効果が
ある。(Effects of the Invention) As explained above, the present invention has the advantage that by using an empty digital test pattern transmitting/receiving circuit for each digital line, a continuity test can be performed on the line before making a call.
第１図は本発明の実施例に係るディジタル回線通話シス
テムのブロック図である。
１・・・ディジタル自動交換機、
２・・・ディジタル自動交換機制御部、３・・・ディジ
タル通話トランク、
４・・・ディジタル試験パターン送出回路、５・・・デ
ィジタル試験パターン受信回路、６・・・ディジタル搬
送回線。
代理人 弁理士 染 川 利 吉FIG. 1 is a block diagram of a digital line communication system according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Digital automatic switchboard, 2... Digital automatic switchboard control unit, 3... Digital call trunk, 4... Digital test pattern sending circuit, 5... Digital test pattern receiving circuit, 6... Digital transport line. Agent Patent Attorney Rikichi Somekawa
Claims (1)
通試験方法において、前記ディジタル回線毎に空の状態
のディジタル試験パターン送受信回路を用いて起呼前に
該当回線の導通試験を行うことを特徴とする局間導通試
験方法。An inter-office continuity test method for a digital line of a digital automatic exchange, characterized in that for each digital line, a continuity test is performed on the corresponding line using an empty digital test pattern transmitting/receiving circuit before making a call. Test method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31006987A JPH01151350A (en) | 1987-12-08 | 1987-12-08 | Interoffice continuity testing method in digital line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31006987A JPH01151350A (en) | 1987-12-08 | 1987-12-08 | Interoffice continuity testing method in digital line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01151350A true JPH01151350A (en) | 1989-06-14 |
Family
ID=18000794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31006987A Pending JPH01151350A (en) | 1987-12-08 | 1987-12-08 | Interoffice continuity testing method in digital line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01151350A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100377932B1 (en) * | 1995-12-29 | 2003-07-10 | 삼성전자주식회사 | Call simulation performing method of voice mail system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61164361A (en) * | 1985-01-17 | 1986-07-25 | Mitsubishi Electric Corp | Continuity test system |
| JPS6256061A (en) * | 1985-09-04 | 1987-03-11 | Nec Eng Ltd | Channel continuity test method in inter-station common line signal system |
-
1987
- 1987-12-08 JP JP31006987A patent/JPH01151350A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61164361A (en) * | 1985-01-17 | 1986-07-25 | Mitsubishi Electric Corp | Continuity test system |
| JPS6256061A (en) * | 1985-09-04 | 1987-03-11 | Nec Eng Ltd | Channel continuity test method in inter-station common line signal system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100377932B1 (en) * | 1995-12-29 | 2003-07-10 | 삼성전자주식회사 | Call simulation performing method of voice mail system |
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