NO782622L - TEST ARRANGEMENT. - Google Patents

TEST ARRANGEMENT.

Info

Publication number
NO782622L
NO782622L NO782622A NO782622A NO782622L NO 782622 L NO782622 L NO 782622L NO 782622 A NO782622 A NO 782622A NO 782622 A NO782622 A NO 782622A NO 782622 L NO782622 L NO 782622L
Authority
NO
Norway
Prior art keywords
wire
test
assigned
line
arrangement according
Prior art date
Application number
NO782622A
Other languages
Norwegian (no)
Inventor
Heinz Brand
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of NO782622L publication Critical patent/NO782622L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing
    • 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
    • H04M3/301—Circuit arrangements at the subscriber's side of the line
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)

Description

Foreliggende oppfinnelse angår et koblingsarrangement for åThe present invention relates to a coupling arrangement for

foreta kontinuitetstester på elektriske forbindelser, og særlig for å foreta slike tester på forbindelser med to-tråds analoge linjer koblet til et tidsdelt multipleks (TDM) switching-nettverk over en hybridkrets 1 telekoraraunikasjonssysterner. perform continuity tests on electrical connections, and in particular to perform such tests on connections with two-wire analog lines connected to a time-division multiplex (TDM) switching network over a hybrid circuit 1 telecommunication systems.

Når en forbindelse, er etablert i et moderne switching-system med analoge switching-nettverk, blir de etablerte veier gjennom switching-nettverket testet/se f.eks. tysk DAS nr. 1.202.348. Z digitale switching-systemer, f.eks. i transittsentraler, utføres en slik konti-nuitetstest med digitale testsignaler. When a connection is established in a modern switching system with analogue switching networks, the established paths through the switching network are tested/see e.g. German DAS No. 1,202,348. Z digital switching systems, e.g. in transit centres, such a continuity test is carried out with digital test signals.

Det er også kjent å foreta en suksessiv utvelgelse av transistor-portene til testabonnenter i hver undergruppe ved hjelp av permanent programmerte prosedyrer,. Testforbindelser blir således etablert over alle multiplekse kanaler og linjer, og bryterne som Inngår i switoning-nettverket kontrolleres for kortslutninger og åpne kretser. Se f.eks. tidsskriftet NTZ, 1969 side 473/474. It is also known to make a successive selection of the transistor gates of test subscribers in each subgroup by means of permanently programmed procedures. Test connections are thus established over all multiplex channels and lines, and the switches included in the switching network are checked for short circuits and open circuits. See e.g. the journal NTZ, 1969 page 473/474.

Formålet med foreliggende oppfinnelse er å tilveiebringe et koblingsarrangement for å foreta kontinuitetstester på forbindelser med to-tråds analoge linjer koblet til et tidsdelt multipleks switching-nettverk over en hybridkrets 1 telekommunikasjonssystemer, og uten at det er behov for spesielle testabonnenter. The purpose of the present invention is to provide a connection arrangement for carrying out continuity tests on connections with two-wire analog lines connected to a time-shared multiplex switching network over a hybrid circuit 1 telecommunications systems, and without the need for special test subscribers.

Dette oppnås ved å utforme koblingsarrangementet 1 overensstemmelse med de nedenfor fremsatte patentkrav. Ved et koblingsarrangement i henhold til foreliggende oppfinnelse, oppnår man den fordel at testen gjøres før etableringen av hver forbindelse for å sikre at det ikke foreligger feil i denne forbindelse. Likeledes oppnås, ved en spesiell utførelse av foreliggende oppfinnelse, den ytterligere fordel at man forsikrer seg om at den testede linje er identifisert, således kan det ikke foretas noen uønsket testing av andre linjer. This is achieved by designing the coupling arrangement 1 in accordance with the patent claims set out below. With a connection arrangement according to the present invention, one obtains the advantage that the test is done before the establishment of each connection to ensure that there are no errors in this connection. Likewise, in a particular embodiment of the present invention, the further advantage is achieved that it is ensured that the tested line is identified, thus no unwanted testing of other lines can be carried out.

For å gi en klarere forståelse av foreliggende oppfinnelse, vises til nedenstående detaljerte beskrivelse av et utførelseseksempel, og til den ledsagende figur, hvor det bare er vist en abonnent som er koblet til en tidsswitch, men hvor likevel prinsippet for foreliggende oppfinnelse fremgår. In order to provide a clearer understanding of the present invention, reference is made to the detailed description below of an exemplary embodiment, and to the accompanying figure, where only a subscriber is shown who is connected to a time switch, but where the principle of the present invention is nevertheless apparent.

Abonnenten Tin er forbundet over sin to-tråds linje til en hybridkrets 6 som danner grensesnittet mellom abonnentens to-tråds linje og overføringens fire-tråds linje. En analog/digital omformer W2 omformer de analoge signaler til digitale signaler og sender dem ut til forbindelsesenheten AT tllforordnet abonnenten. På tilsvarende måte omformer en digital/analog omformer Wl de digitale signaler som tilveiebringes av forbindelsesenheten AT til analoge signaler. The subscriber Tin is connected over its two-wire line to a hybrid circuit 6 which forms the interface between the subscriber's two-wire line and the transmission's four-wire line. An analog/digital converter W2 converts the analog signals into digital signals and sends them out to the connection unit AT for the subscriber. In a similar way, a digital/analogue converter Wl converts the digital signals provided by the connection unit AT into analogue signals.

I forbindelsesenheten AT blir abonnentapparatet Tin på kjent måte forbundet med TDM-bussen ZS i tldsswitonen ZSt. Ytterligere tids- og rom-swltcher som kan foreligge i systemet, er ikke vist i tegningen, for ikke å overlesse denne. In the connection unit AT, the subscriber device Tin is connected in a known manner to the TDM bus ZS in the tldswiton ZSt. Additional time and space switches that may be present in the system are not shown in the drawing, so as not to overload it.

Når en abonnent fjerner mikrotelefonen, detekteres dette i en sentralenhet ZE på kjent måte. En forbindelsesvei etableres til tids-velgeren ZSt, og abonnenten tildeles sine nødvendige tidsluker. På samme tid blir styringen av tidsswitchen Stz instruert til å forbinde en tonefrekvent sender S ved mottagelsestidsrammen tx til abonnenten, og en tonefrekvent mottager E ved sendertidsrammen ty, til den tids-delte multipleksbuss ZS. When a subscriber removes the handset, this is detected in a central unit ZE in a known manner. A connection path is established to the time selector ZSt, and the subscriber is allocated his required time slots. At the same time, the control of the time switch Stz is instructed to connect a tone frequency transmitter S at the reception time frame tx to the subscriber, and a tone frequency receiver E at the transmission time frame ty, to the time-shared multiplex bus ZS.

Senderen og mottageren kan være utstyr som allerede eksisterer i moderne switohlng-systemer, eller kan være utstyr som er spesielt ut-viklet for dette formål. F.eks. kan man gjøre bruk av: The transmitter and receiver can be equipment that already exists in modern switching systems, or can be equipment that has been specially developed for this purpose. E.g. you can make use of:

- MFC sender og mottager- MFC transmitter and receiver

- sender og mottager for frekvenser som benyttes ved trykk-knappnummersending - transmitter and receiver for frequencies used for push-button number transmission

- nummerskive tonesender og nummersklve tonemottager- number dial tone transmitter and number key tone receiver

- sender og mottager for frekvenser ellar frekvenskombinasjoner som ikke benyttes for signalering i sentralen - frekvens eller frekvenskombinasjoner som kan fremkomme ved trykk-knappvalg - i mottageren kan alle kjente slgnalgjenkjennelsesmetoder benyttes, f.eks. nivåsammenligning, frekvensgjenkjennelse, "mark/space" detektering, korrelaajonskalkyler. - transmitter and receiver for frequencies or frequency combinations that are not used for signaling in the exchange - frequency or frequency combinations that can appear by push-button selection - all known signal recognition methods can be used in the receiver, e.g. level comparison, frequency recognition, "mark/space" detection, correlation calculations.

Senderen S og mottageren E er også forbundet med TDM-multipleks-bussen over forbindelsesenhetene AS, henholdsvis AE. For å forenkle fremstillingen, antas at sendere og mottagere som er vist kan sende og motta digitale signaler. The transmitter S and the receiver E are also connected by the TDM multiplex bus via the connection units AS, respectively AE. For simplicity of illustration, it is assumed that transmitters and receivers shown can send and receive digital signals.

Signalet som utsendes av den tonefrekvente sender S over tidsswitchen ZS tilføres til hybridkretsen 6, reduseres i effekt ved de transhybride tap, og føres til den utgående gren på fire-trådslinjen. Dette signalet mottas av den tonefrekvente mottager E og evalueres som resultat av kontinuitetstesten. The signal emitted by the tone-frequency transmitter S over the time switch ZS is fed to the hybrid circuit 6, reduced in effect by the transhybrid losses, and fed to the outgoing branch of the four-wire line. This signal is received by the tone frequency receiver E and evaluated as a result of the continuity test.

En slik kontinultetstest gjøres også før ringetone føres til den anropte abonnent. Such a continuity test is also carried out before the ringing tone is sent to the called subscriber.

For testformål kan.forbindelser med alle ikke-aktive abonnenter etableres, og deretter testes på lignende måte. På denne måten kan alle forbindelser testes. For testing purposes, connections with all non-active subscribers can be established and then tested in a similar manner. In this way, all connections can be tested.

For å sikre at testtllstanden til den ønskede abonnent er etablert, kan sentralenheten ZE gjennomføre et spesielt testtrinn, hvorved en kontakt u tilforordnet abonnenten som skal testes, betjenes i en kort tid. Z utførelseseksempelet er vist forskjellige muligheter for å plassere denne kontakten u. To ensure that the test number of the desired subscriber is established, the central unit ZE can carry out a special test step, whereby a contact assigned to the subscriber to be tested is operated for a short time. The Z design example shows different possibilities for placing this contact u.

Hvis kontakten ul blir operert, blokkeres omformeren W2, og mottageren E mottar ikke noe signal under operasjonen. Denne korttids-avbrytelsen av det mottatte signal blir gjentatt som en bekreftelse på If the contact ul is operated, the converter W2 is blocked, and the receiver E receives no signal during the operation. This short-term interruption of the received signal is repeated as a confirmation of

at den korrekte abonnent er testet.that the correct subscriber has been tested.

Det er også mulig å foreta en kortvarig utkobling av balansenettverket N i hybridkretsen G ved hjelp av kontakten u2. Denne utkoblingen av balansenettverket forandrer de transhybride tap og følgelig signalet som mottas i mottageren. Denne korttidsforandring blir også fortolket som en bekreftelse. It is also possible to temporarily switch off the balancing network N in the hybrid circuit G using the contact u2. This disconnection of the balance network changes the transhybrid losses and consequently the signal received in the receiver. This short-term change is also interpreted as a confirmation.

En annen mulighet er å åpne kontakten u3 en kort tid og således påvirke de transhybride tap. Denne kontakten u3 kan f.eks. være en rlngekontakt tilforordnet abonnenten. Another possibility is to open the contact u3 for a short time and thus affect the transhybrid losses. This contact u3 can e.g. be a telephone contact assigned to the subscriber.

Dersom hybridkretsen G inneholder aktive elementer, kan en for-sterker V i hybridkretsen bli påvirket slik av en kontakt u4 i et kort tidsrom at de transhybride tap blir redusert. Hvis de transhybride tap reduseres til verdien null, er det mulig å identifisere abonnenten og kontrollere driften av D/A og A/D omformerne Wl og W2, hvis toner av ulike nivåer blir utsendt av den tonefrekvente sender S, og derved dekker hele omformerkarakteristikken, for ved høyere transhybrid tap kan ikke karakteristikken i området for de maksimale nivåer bli testet. If the hybrid circuit G contains active elements, an amplifier V in the hybrid circuit can be influenced in such a way by a contact u4 for a short period of time that the transhybrid losses are reduced. If the transhybrid losses are reduced to zero, it is possible to identify the subscriber and control the operation of the D/A and A/D converters Wl and W2, whose tones of different levels are emitted by the tone-frequency transmitter S, thereby covering the entire converter characteristic, because at higher transhybrid losses, the characteristic in the area of the maximum levels cannot be tested.

Kontaktene som er vist, kan naturligvis erstattes av transistorer eller annet koblings-utstyr. The contacts shown can of course be replaced by transistors or other switching equipment.

Claims (7)

1. Koblingsarrangement for å foreta kontinuitetstester på en forbindelse fra eller til en 2-tråds analog linje som er koblet til et 4-tråds arbeidende tidsdelt-multipleks (TDM) svitsjingnettverk over1. Wiring arrangement for making continuity tests on a connection from or to a 2-wire analog line connected to a 4-wire working time-division multiplex (TDM) switching network over en 2-tråds/4-tråds hybridkrets, hvilken forbindelse er oppkoblet over minst ett TDM-arbeidende koblingstrinn i svitsjingnettverket, karakterisert ved at det vinder hele kontinuitetstesten er tilkoblet en testsignalsender (S) til det endepunkt (ES) av den forbindelse som skal testes som vender mot svitsjingnettverket, hvilken testsignalsender (S) er tilkoblet dette punktet 1 de tidsluker (tx) som er tilforordnet for informasjonsoverføring i retning av analoglinjen (Tin), og at det er tilkoblet en testmottager (E) til det samme punkt, men i de tidsluker (ty) som er tilforordnet for informa-sjonsoverføring i motsatt retning, hvilken testmottager (E) reagerer på de signaler som er sendt ut av testsenderen (S) og som fra å være et utgående signal på den utgående retning i 4-tråds-siden til 2-tråds/4-tråds hybridkretsen (G) lykkes i å bli overført som et innkommende signal på den innkommende retning i 4-tråds-siden av 2-tråds/4-tråds hybridkretsen (G). a 2-wire/4-wire hybrid circuit, which connection is connected via at least one TDM-working switching stage in the switching network, characterized in that it winds the entire continuity test, a test signal transmitter (S) is connected to the end point (ES) of the connection to be tested facing the switching network, which test signal transmitter (S) is connected to this point 1 the time slots (tx) which are assigned for information transmission in the direction of the analog line (Tin), and that a test receiver (E) is connected to the same point, but in the time slots (ty) which are assigned for information transmission in the opposite direction, which test receiver (E) reacts to the signals sent out by the test transmitter (S) and which from being an outgoing signal in the outgoing direction in 4-wire -side of the 2-wire/4-wire hybrid circuit (G) succeeds in being transmitted as an incoming signal in the incoming direction in the 4-wire side of the 2-wire/4-wire hybrid circuit (G). 2. Koblingsarrangement ifølge krav 1, karakterisert ved at minst én av de individuelle koblingsinnretninger (G, W2) som er tilforordnet forbindelser fra prøvesenderen (S) til prøvemot-tageren (E), med hvilke., individuelle koblinga innretninger overførings-egenskapene til prø vesignalet kan forandres, er forsynt med koblings-utstyr (ul - u4) som kan påvirkes av en sentral styringsenhet (ZE)» og at prøvemottageren (E) er utført slik at den reagerer på mottatte prøvesignaler som er meddelt en forandring av disse overføringsegen-skapene. 2. Coupling arrangement according to claim 1, characterized in that at least one of the individual coupling devices (G, W2) which are assigned to connections from the sample transmitter (S) to the sample receiver (E), with which., individual coupling devices the transmission properties of the sample the road signal can be changed, is provided with switching equipment (ul - u4) which can be influenced by a central control unit (ZE)" and that the test receiver (E) is designed so that it reacts to received test signals which are notified of a change in these transmission characteristics the cabinets. 3. Koblingsarrangement ifølge krav 2, karakterisert ved at en digital-analog eller en analog-digital omformer (W2) blir blokkert av en krets (ul) som er tilforordnet linjen. 3. Connection arrangement according to claim 2, characterized in that a digital-to-analogue or an analogue-to-digital converter (W2) is blocked by a circuit (ul) assigned to the line. 4. Koblingsarrangement ifølge krav 2, karakterisert ved at det balanserende nettverk (N) i hybridkretsen (G) blir frakoblet av en krets (u2) tilforordnet linjen. 4. Connection arrangement according to claim 2, characterized in that the balancing network (N) in the hybrid circuit (G) is disconnected by a circuit (u2) assigned to the line. 5. Koblingsarrangement ifølge krav 2, karakterisert ved at linjen til den anropende abonnent (Tin) blir åpnet av et utstyr (u3) som er tilforordnet linjen.5. Connection arrangement according to claim 2, characterized in that the line of the calling subscriber (Tin) is opened by a device (u3) assigned to the line. 6. Koblingsarrangement Ifølge krav 5, karakterisert ved at utstyret (u3) er en kontakt på et ringerelé. 6. Connection arrangement According to claim 5, characterized in that the equipment (u3) is a contact on a ring relay. 7. Koblingsarrangement ifølge krav 2, karakterisert ved at transhybridtapene i en hybridkrets med aktive elementer reduseres av et utstyr (u4) tilforordnet linjen.7. Connection arrangement according to claim 2, characterized in that the transhybrid losses in a hybrid circuit with active elements are reduced by a device (u4) assigned to the line.
NO782622A 1977-08-05 1978-08-01 TEST ARRANGEMENT. NO782622L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2735341A DE2735341C3 (en) 1977-08-05 1977-08-05 Arrangement for the continuity test in telecommunication systems

Publications (1)

Publication Number Publication Date
NO782622L true NO782622L (en) 1979-02-06

Family

ID=6015717

Family Applications (1)

Application Number Title Priority Date Filing Date
NO782622A NO782622L (en) 1977-08-05 1978-08-01 TEST ARRANGEMENT.

Country Status (16)

Country Link
JP (1) JPS5434706A (en)
AR (1) AR215513A1 (en)
AU (1) AU3844578A (en)
BE (1) BE869472A (en)
BR (1) BR7804946A (en)
DE (1) DE2735341C3 (en)
DK (1) DK344078A (en)
ES (1) ES472357A1 (en)
FI (1) FI782394A (en)
FR (1) FR2399775A1 (en)
GB (1) GB2002202B (en)
GR (1) GR65208B (en)
IN (1) IN150495B (en)
NL (1) NL7807402A (en)
NO (1) NO782622L (en)
SE (1) SE7808251L (en)

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JPS5473507A (en) * 1977-11-25 1979-06-12 Oki Electric Ind Co Ltd Channel test system
DE3005799C2 (en) * 1980-02-13 1981-10-01 Siemens AG, 1000 Berlin und 8000 München Test device for telecommunications systems, in particular company telephone systems, with a coupling network that connects four-wire transmission devices
US4393491A (en) * 1980-11-05 1983-07-12 Anaconda-Ericsson Automatic self-test system for a digital multiplexed telecommunication system
JPS57143968A (en) * 1981-03-02 1982-09-06 Oki Electric Ind Co Ltd Channel test system
FR2502432A1 (en) * 1981-03-18 1982-09-24 Trt Telecom Radio Electr SUBSCRIBER JUMPER TESTING SYSTEM
FR2503511A1 (en) * 1981-04-03 1982-10-08 Cit Alcatel Digital switching system for telephonic auto-commutator - utilises microprocessor in marker unit to drive memory controller for buffer memories in switching network
CA1203875A (en) * 1983-06-16 1986-04-29 Mitel Corporation Switching system loopback test circuit
DE4141090A1 (en) * 1991-12-13 1993-06-17 Kommunikations Elektronik METHOD FOR CHECKING THE FUNCTIONALITY OF TRANSMISSION LINKS OF MESSAGE TECHNICAL SIGNALS

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DE1168506B (en) * 1961-09-15 1964-04-23 Siemens Ag Circuit arrangement for testing signal channels in telecommunications systems
DE1202348B (en) * 1963-02-23 1965-10-07 Standard Elektrik Lorenz Ag Method for testing the connection wires in telecommunications switching systems, in particular telephone dialing systems
FR2026141A1 (en) * 1968-12-14 1970-09-11 Sits Soc It Telecom Siemens
DE1964870B2 (en) * 1969-12-24 1976-11-11 Vieriing, Oskar, Prof. Dr.phil.habil., 8553 Ebermannstadt Measurement of hybrid line characteristics - line not directly accessible measured from terminal connecting lines
JPS5428686B2 (en) * 1971-08-11 1979-09-18
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Also Published As

Publication number Publication date
SE7808251L (en) 1979-02-06
AR215513A1 (en) 1979-10-15
GB2002202B (en) 1982-01-06
DK344078A (en) 1979-02-06
BE869472A (en) 1979-02-05
JPS5434706A (en) 1979-03-14
DE2735341A1 (en) 1979-02-08
NL7807402A (en) 1979-02-07
GB2002202A (en) 1979-02-14
ES472357A1 (en) 1979-04-01
GR65208B (en) 1980-07-29
DE2735341B2 (en) 1979-06-07
DE2735341C3 (en) 1984-05-10
IN150495B (en) 1982-10-23
AU3844578A (en) 1980-01-31
FR2399775A1 (en) 1979-03-02
FI782394A (en) 1979-02-06
BR7804946A (en) 1979-04-10

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