DE3135561A1 - Method for routine testing of digital telephone connections - Google Patents

Method for routine testing of digital telephone connections

Info

Publication number
DE3135561A1
DE3135561A1 DE19813135561 DE3135561A DE3135561A1 DE 3135561 A1 DE3135561 A1 DE 3135561A1 DE 19813135561 DE19813135561 DE 19813135561 DE 3135561 A DE3135561 A DE 3135561A DE 3135561 A1 DE3135561 A1 DE 3135561A1
Authority
DE
Germany
Prior art keywords
telephone
routine testing
conditions
transmission
digital telephone
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
DE19813135561
Other languages
German (de)
Other versions
DE3135561C2 (en
Inventor
Wolfdietrich Ing. Günther (grad.), 8190 Wolfratshausen
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Priority to DE19813135561 priority Critical patent/DE3135561A1/en
Publication of DE3135561A1 publication Critical patent/DE3135561A1/en
Application granted granted Critical
Publication of DE3135561C2 publication Critical patent/DE3135561C2/de
Granted legal-status Critical Current

Links

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
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
    • H04M3/303—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using PCM multiplexers, e.g. pair gain systems

Abstract

The aim is for such testing to be performed without a special test network, and for it to be possible to detect faults in good time so that repairs can be carried out before total failure. The invention provides for this purpose to aggravate the conditions for data transmission, which takes place in any case for operational reasons, from the switching centre to the subscriber's station and back at times when no calls are being made, and to determine the bit error rate under these circumstances.

Description

Verfahren zur Routineprüfung digitaler Fernsprechan-Procedure for routine testing of digital telephone

schlüsse.conclusions.

Die Erfindung betrifft ein Verfahren zur Routineprüfung digitaler Fernsprechanschlüsse.The invention relates to a method for routine testing of digital Telephone connections.

Wenn unter Zuhilfenahme eines gesonderten Prüfnetzes durch routinemäßige Messungen die Funktionseigenschaften von Fernsprechanschlüssen festgestellt werden, lassen sich in der Regel Verschlechterungen dieser Funktionseigenschaften frühzeitig genug feststellen, um Fehlerursachen zu beseitigen, bevor sich die Furit-onseigenschaften derart verschlechtert haben, daß der Betrieb des Fernsprecheranschlusses sich nicht mehr aufrechterhalten läßt.If with the help of a separate test network by routine Measurements to determine the functional properties of telephone connections, As a rule, deterioration of these functional properties can be seen at an early stage Determine enough to eliminate the root cause before the furit-on properties have deteriorated to such an extent that the operation of the telephone line does not change more sustained.

Ein solches separates Prüfnetz stellt natürlich eInen nicht unbeträchtlichen Aufwand dar.Such a separate test network is of course a not inconsiderable one Effort.

Eine routinemäßige Ermittlung der Bitfehlerrate bei der Ubertragung von Daten zwischen der Anschlußstelle einer Fernsprechstation, also dem Konzentrator oder der Vermittlungsstelle und der Fernsprechstation würde sich zwar ohne ein gesondertes Prüfnetz durchführen lassen, erscheint aber wenig geeignet, schon frühzeitig eine Verschlechterung der Funktionseigenschaften des Fernsprechanschlusses erkennen zu lassen, da, solange diese noch relativ gut sind, bei einer routinemäßigen Prüfung festgestellte Bitfehler kein zutreffendes Bild von der tatsächlichen Funktionsgüte des Fernsprechanschlusses geben.A routine determination of the bit error rate during transmission of data between the connection point of a telephone station, i.e. the concentrator or the central office and the telephone station would work without a separate one Have a test network carried out, but it does not seem appropriate to do one at an early stage Recognize deterioration in the functional properties of the telephone connection leave, as long as these are still relatively good, with a routine test Bit errors detected do not provide an accurate picture of the actual functional quality of the telephone connection.

Aufgabe der vorliegenden Erfindung ist es daher, ein Verfahren zur Routineprüfung digitaler Fernsprechanschlüsse anzugeben, bei dessen Durchführung auf ein gesondertes Prüfnetz verzichtet werden kann, das aber dennoch Fehler rechtzeitig vor einem totalen Ausfall des Fernsprechanschlusses erkennen läßt.The object of the present invention is therefore to provide a method for To specify routine testing of digital telephone lines when performing it a separate test network can be dispensed with, but it still fails in good time before a total failure of the telephone connection can be recognized.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß während der Prüfzeitspannen, die vorzugsweise in Zeiten gelegt sind, in denen keine Gesprächsverbindung besteht, die Bedingungen für eine auch außerhalb der Zeiten von Gesprächsverbindungen aus betrieblichen Gründen stattfindende Übertragung bestimmter Daten vom vermittlungsseitigen Anschluß der Teilnehmeranschlußleitung zur Fernsprechstation und zurück erschwert und unter diesen Umständen die Bitfehlerrate einer solchen Datenübertragung ermittelt wird.According to the invention, the object is achieved in that during the test periods, which are preferably placed in times when there is no call connection, the conditions for a call outside of the times For operational reasons, certain data are transferred from the switching side Connection of the subscriber line to the telephone station and back made difficult and under these circumstances determines the bit error rate of such a data transmission will.

Wenn die in Durchführung des erfindungsgemäßen Verfahrens ermittelte Bitfehlerrate einen bestimmten Schwellwert überschritten hat, kann angenommen werden, daß die Bitfehlerrate bei normalen übertragungsbedingungen sich ebenfalls schon soweit verschlechtert hat, daß eine Fehlerlokalisierung und eine Reparatur nach einer absehbaren Zeitspanne vorgenommen werden muß. Zwischenzeitlich kann aber, selbstverständlich nach Wiederherstellung der normalen Ubertragungsbedingungen, der Fernsprechanschluß noch betrieben werden.If the determined in the implementation of the method according to the invention Bit error rate has exceeded a certain threshold value, it can be assumed that that the bit error rate under normal transmission conditions is also already has deteriorated so far that a fault localization and a repair after must be made within a foreseeable period of time. In the meantime, however, of course after restoration of the normal transmission conditions, the telephone connection can still be operated.

Da die erfindungsgemäße Prüfung bei der übertragung von Daten erfolgt, die in anderem Zusammenhang, nämlich beispielsweise vom Zwecke der Anreizerkennung, vom Konzentrator oder der Vermittlungsstelle, an die die. zu überprüfende Fernsprechstation angeschlossen ist, zu dieser Fernsprechstation und urlWlck an die genannten zentralen Einrichtungen {ibertragen werden, et':flordert die erfindungsgemäße Maßnahme keinen diesbezüglichen Mehraufwand.Since the test according to the invention takes place during the transmission of data, in another context, for example for the purpose of identifying incentives, from the concentrator or the exchange to which the. Telephone station to be checked is connected to this telephone station and urlWlck to the said central Facilities are transferred, et ': the measure according to the invention does not require any related Extra effort.

Gemäß einer Ausgestaltung der Erfindung erfolgt die Erschwerung der übertragungsbedingungen durch Absenken des von der Vermittlungsstelle aus gelieferten Speisestroms für die Fernsprechstation, eine Maßnahme,die sich ebenfalls ohne großen Aufwand durchführen läßt.According to one embodiment of the invention, the aggravation takes place transmission conditions by lowering the delivered from the exchange Feed current for the telephone station, a measure that can also be done without major Can carry out effort.

Die Ermittlung der Bitfehlerrate kann dadurch vorgenommen werden, daß die von der Anschlußstelle des Fernsprecheranschlusses an die Fernsprechstation ausgesendeten und von dort zurückgesendeten Daten miteinander verglichen und die Nichtübereinstimmungen pro Zeiteinheit festgestellt werden.The bit error rate can be determined by that from the connection point of the telephone connection to the telephone station sent and returned from there data are compared with each other and the Inconsistencies are found per unit of time.

2 Patentansprüche2 claims

Claims (2)

Patentansprüche.Claims. Verfahren zur Routineprüfung digitaler Fernsprechanschlüsse, d a d u r c h g e k e n n z e i c h n e t , daß während der Prüfzeitspannen, die vorzugsweise in Zeiten gelegt sind, in denen keine Gesprächsverbindung besteht, die Bedingungen für eine auch außerhalb der Zeiten von Gesprächsverbindungen aus betrieblichen Gründen stattfindende Übertragung bestimmter Daten vom vermittlungsseitigen Anschluß der Teilnehmeranschlußleitung zur Fernsprechstation und zurück erschwert und unter diesen Umständen die Bitfehlerrate einer solchen Datenübertragung erMittelt wird. Procedure for routine testing of digital telephone connections, d a it is not indicated that during the test periods, which are preferably the conditions are set at times when there is no call connection for one also outside of the hours of calls for operational reasons taking place transmission of certain data from the exchange-side connection of the Subscriber line to the telephone station and back made difficult and under these Under certain circumstances, the bit error rate of such a data transmission is determined. 2. Verfahren nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß die Erschwerung der übertragungsbedingungen durch Absenken des von der Vermittlungsstelle aus gelieferten Speisestroms für die Fernsprechstation erfolgt.2. The method according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the aggravation of the transmission conditions by lowering the of the Exchange takes place from supplied power supply for the telephone station.
DE19813135561 1981-09-08 1981-09-08 Method for routine testing of digital telephone connections Granted DE3135561A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813135561 DE3135561A1 (en) 1981-09-08 1981-09-08 Method for routine testing of digital telephone connections

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813135561 DE3135561A1 (en) 1981-09-08 1981-09-08 Method for routine testing of digital telephone connections

Publications (2)

Publication Number Publication Date
DE3135561A1 true DE3135561A1 (en) 1983-03-17
DE3135561C2 DE3135561C2 (en) 1990-05-31

Family

ID=6141137

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813135561 Granted DE3135561A1 (en) 1981-09-08 1981-09-08 Method for routine testing of digital telephone connections

Country Status (1)

Country Link
DE (1) DE3135561A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675624A1 (en) * 1994-03-29 1995-10-04 Gpt Limited Telecommunication customer interface

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003282A1 (en) * 1980-01-30 1981-08-06 Siemens AG, 1000 Berlin und 8000 München Test word generator for digital exchanges - is connected onto highway in main switch block for test words to be sent out to loop back at subscriber's line circuit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003282A1 (en) * 1980-01-30 1981-08-06 Siemens AG, 1000 Berlin und 8000 München Test word generator for digital exchanges - is connected onto highway in main switch block for test words to be sent out to loop back at subscriber's line circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0675624A1 (en) * 1994-03-29 1995-10-04 Gpt Limited Telecommunication customer interface
US5636260A (en) * 1994-03-29 1997-06-03 Gpt Limited Telecommunication customer interface

Also Published As

Publication number Publication date
DE3135561C2 (en) 1990-05-31

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee