NO960065L - Method and Device for Providing Transition Between Web Owner's Website and Network User's Website in a Telecommunications Network - Google Patents
Method and Device for Providing Transition Between Web Owner's Website and Network User's Website in a Telecommunications NetworkInfo
- Publication number
- NO960065L NO960065L NO960065A NO960065A NO960065L NO 960065 L NO960065 L NO 960065L NO 960065 A NO960065 A NO 960065A NO 960065 A NO960065 A NO 960065A NO 960065 L NO960065 L NO 960065L
- Authority
- NO
- Norway
- Prior art keywords
- network
- terminal block
- terminal
- owner
- component
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 9
- 230000007704 transition Effects 0.000 title claims description 6
- 238000005266 casting Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 239000012778 molding material Substances 0.000 claims description 4
- 238000010079 rubber tapping Methods 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/028—Subscriber network interface devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5216—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases characterised by the sealing material, e.g. gels or resins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/14—Distribution frames
- H04Q1/142—Terminal blocks for distribution frames
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/04—Connectors or connections adapted for particular applications for network, e.g. LAN connectors
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Description
Den foreliggende oppfinnelse vedrører en fremgangsmåte og anordning for tilveiebringelse av en overgang mellom netteierside og nettbrukers ide i et telekommunikasjonsnett for telefoni og data. The present invention relates to a method and device for providing a transition between the network owner's side and the network user's idea in a telecommunications network for telephony and data.
Det er idag vanlig å koble netteierkabelen til en koblingsplint og la nettbrukerkabelen strekke seg fra utgangsterminalene derav. Slike koblingsplinter har kontakter der visse partier av disse er utsatt for korrosjon og forringelse, hvilket i visse tilfeller kan føre til galvanisk brudd og tap av signalforbindelse, eller at motstanden i kabelforbindelsen økes. Det har derfor lenge vært et stort ønske, ikke minst fra netteiere å kunne unngå disse problemer. It is common today to connect the network owner's cable to a terminal block and let the network user's cable extend from the output terminals thereof. Such terminal blocks have contacts where certain parts of these are exposed to corrosion and deterioration, which in certain cases can lead to galvanic breakdown and loss of signal connection, or that the resistance in the cable connection is increased. It has therefore long been a great wish, not least from network owners, to be able to avoid these problems.
Videre er det kjent at den høy-ohmige motstandsavslutning av netteierkabelen oftest blir utført ved første bruker-apparat hos nett brukeren. Dette er særlig tilfellet i forbindelse med installasjon i private husstander. Furthermore, it is known that the high-ohmic resistance termination of the network owner's cable is most often carried out at the first user device of the network user. This is particularly the case in connection with installation in private households.
Dette betyr at det er forholdsvis lett å foreta tapping av telefonlinjer ved at den som utfører dette kobler seg inn på nett-eierens koblingsbokser ett eller annet sted på linje-nettet, fortrinnsvis relativt nær nett-eierens eiendom. I praksis betyr dette at det blir relativt vanskelig på en automatisk måte å oppdage slik manipulering eller tapping, og nett-brukeren som er uvitende om denne tapping får overraskende og for ham uforståelige regninger for medgått bruk. This means that it is relatively easy to tap telephone lines by having the person who performs this connect to the network owner's junction boxes somewhere on the line network, preferably relatively close to the network owner's property. In practice, this means that it becomes relatively difficult to automatically detect such manipulation or tapping, and the internet user who is unaware of this tapping receives surprising and, for him, incomprehensible bills for usage.
Ettersom teknikken og tendensen til denne type tappingssvindel har tiltatt, særlig i forbindelse med utvidede teletjenester, er antallet av klager vedrørende uforståelige "tellerskritt" og mistanker om tapping økt i betydelig grad. As the technique and the tendency for this type of tapping fraud have increased, particularly in connection with extended telecommunications services, the number of complaints regarding incomprehensible "counter steps" and suspicions of tapping has increased significantly.
For nett-eierne er dette et betydelig problem, ettersom undersøkelser er både tid-krevende og kompliserte, samt at det ikke alltid er like enkelt å oppdage hvor telekabelen er blitt tappet. For the network owners, this is a significant problem, as investigations are both time-consuming and complicated, and it is not always easy to discover where the telecommunications cable has been tapped.
Det oppstår også til stadighet diskusjoner m.h.t. hvem som er reelt ansvarlig for tappingen av telekabelen, og nett-brukeren blir ofte en tapende part. There are also constant discussions regarding who is actually responsible for the tapping of the telecommunications cable, and the internet user often becomes a losing party.
Den foreliggende oppfinnelse tilsikter derfor på en enkel måte å tilveiebringe en fremgangsmåte og anordning av den innledningsvis nevnte type, og der de nevnte problemer løses på en uhyre enkel måte ved i realiteten å tilveiebringe et veldefinert grensesnitt (ansvarsområde) mellom nett-eier og nett-bruker, enten nett-brukeren er en privatkunde eller en bedriftskunde. The present invention therefore aims in a simple way to provide a method and device of the type mentioned at the outset, and where the mentioned problems are solved in an extremely simple way by, in reality, providing a well-defined interface (area of responsibility) between the network owner and the network user, whether the online user is a private customer or a business customer.
Fremgangsmåten og anordningen kjennetegnes slik det fremgår av de vedlagte patentkrav. The method and device are characterized as shown in the attached patent claims.
Oppfinnelsen skal nå nærmere beskrives under henvisning til de vedlagte tegninger, der: Fig. 1 viser skjematisk et typisk telekommunikasjonsnett mellom en sentral og abonnenter, Fig. 2 viser en typisk koblingsplint der anordningen, ifølge oppfinnelsen er inkorporert. Fig. 3 viser i forstørret tverrsnitt en koblingsplint utformet i henhold til prinsippene for foreliggende oppfinnelse. The invention will now be described in more detail with reference to the attached drawings, where: Fig. 1 schematically shows a typical telecommunications network between an exchange and subscribers, Fig. 2 shows a typical terminal block in which the device, according to the invention, is incorporated. Fig. 3 shows an enlarged cross-section of a terminal block designed in accordance with the principles of the present invention.
På fig. 1 er vist en sentral 1 der det, som eksempel er vist ut fra sentralen en kabel 2 bestående av to ledningspar 3, 3' og 4, 4'. I det viste eksempel er disse ledningspar In fig. 1 shows a switchboard 1 where, as an example, a cable 2 consisting of two wire pairs 3, 3' and 4, 4' is shown from the switchboard. In the example shown, these are wire pairs
ført gjennom koblingsskap 5 og 6 før forgrening skjer i et ytterligere koblingsskap 7. Ledningsparet 3,3' avgrenes fra skapet 7 ved hjelp av et ytterligere ledningspar 8, 8' og føres inn til inngangen 9' på en netteierkoblingsplint 9, og der utgangen 9" danner grensesnitt for en privatkunde. Ledningsparet 8, 8' avsluttes på siden 9' av grensesnittet 9 ved hjelp av en høy-ohmig motstandskomponent 10. Koblings-forbindelser 11 og 11' mellom inngangssiden 9' og utganssiden 9" symboliserer i realitet de mulige koblingsmuligheter som er til stede i en koblingsplint, dvs. fast, permanent forbindelse, forbindelse via skillebryter eller via en koblingskomponent, f.eks. strømsikring. Utgående side 9" danner videre forbindelse via et ledningspar 12, 12' med en normaltilkobling N, angitt med henvisningstallet 13, f.eks. et telefonapparat. passed through junction boxes 5 and 6 before branching takes place in a further junction box 7. The cable pair 3,3' is branched off from the box 7 with the help of a further cable pair 8, 8' and is led into the input 9' on a network owner connection terminal 9, and where the output 9 " forms an interface for a private customer. The wire pair 8, 8' is terminated on the side 9' of the interface 9 by means of a high-resistive resistance component 10. Connection connections 11 and 11' between the input side 9' and the output side 9" in reality symbolize the possible connection possibilities that are present in a terminal block, i.e. fixed, permanent connection, connection via disconnector or via a connection component, e.g. power fuse. The outgoing side 9" further forms a connection via a wire pair 12, 12' with a normal connection N, indicated by the reference number 13, e.g. a telephone set.
Fra ledningsparet 4, 4' er det ført en avgrening til en koblingsplint 14 ved hjelp av et ledningspar 15, 15'. Ledningsparet 15, 15' avsluttes på inngangssiden 14' av koblingsplinten 14. Koblingsplintens utgangsside 14' fungerer som grensesnitt mellom nett-eier og nett-bruker, og der i det valgte eksempel nett-brukeren er en bedriftskunde. Ledningsparet 15, 15' avsluttes på koblingsplintens utgangsside 14" med en høy-ohmig motstandskomponent 16. Fra ledningsparet 15, 15' er det forbindelse over til nett-brukersiden 17 ved hjelp av forbindelser 17, 17' for videre forbindelse med eksempelvis et vanlig teleforbindelsebruksapparat N angitt med henvisningstallet 18, idet forbindelsen mellom brukersiden 17 (f.eks. en hussentral) og bruksapparatet 18, f.eks. et telefonapparat, tilveiebringes ved hjelp av ledningspar 19, 19'. Ved at brukersiden 17 f.eks. er en nettbrukersentral, kan biapparater B tilkobles ved hjelp av ledningspar 21, 21'. From the pair of wires 4, 4', a branch is led to a terminal block 14 by means of a pair of wires 15, 15'. The wire pair 15, 15' terminates on the input side 14' of the terminal block 14. The output side 14' of the terminal block acts as an interface between the network owner and the network user, and in the selected example the network user is a business customer. The wire pair 15, 15' is terminated on the terminal's output side 14" with a high-resistive resistance component 16. From the wire pair 15, 15' there is a connection over to the network user side 17 by means of connections 17, 17' for further connection with, for example, a normal telecommunication user device N indicated by the reference number 18, as the connection between the user side 17 (e.g. a house switchboard) and the user device 18, e.g. a telephone device, is provided by means of wire pairs 19, 19'. In that the user side 17 is, for example, a network user centre, secondary devices B can be connected using cable pairs 21, 21'.
Selv om det er vist ledningsforbindelser bestående av typiske ledningspar, skal det umiddelbart forstås at det er tenkelig å anvende kabelforbindelser som inneholder mer enn to ledninger til hver nettbruker, dvs. at forbindelsen til netteiersiden av en koblingsplint likeledes kan ha flere ledninger eller ledningspar pr. brukskurs. Although wiring connections consisting of typical wire pairs have been shown, it should be immediately understood that it is conceivable to use cable connections containing more than two wires for each network user, i.e. that the connection to the network owner's side of a terminal block can also have several wires or wire pairs per usage course.
Fig. 1 skal således kun tjene til å belyse oppfinnelsestanken uten på noen måte å ansees å være begrensende for denne. Fig. 1 shall thus only serve to illustrate the idea of the invention without in any way being considered to be limiting of it.
Videre vil det forstås at det i tillegg til motstandskomponentene 10, 16 eventuelt kan tilkobles andre elektroniske eller elektriske komponenter, alt avhengig av det aktuelle behov. Furthermore, it will be understood that in addition to the resistance components 10, 16, other electronic or electrical components can possibly be connected, all depending on the relevant need.
På fig. 2 er vist, sett fra siden, en typisk koblingsplint, her for enkelhets skyld benevnt med henvisningstallet 22. Koblingsplinten i fig. 2 er sett fra utgangssiden. Koblingsplinten består av en boksdel 22' og en lokkdel 22", idet lokkdelen kan føres ned over boksdelen 22' og der sneppes på plass eller fastgjøres på annen måte. Koblingsplinten er forsynt med knivkontakter 23 og 23' for hver ledningsstrekning, slik det tydeligere fremgår av fig. 3. I eksemplet i fig. 3 går knivkontaktene 23 og 23' nederst over i respektive krysskoblingselementer 24 og 24'. Den type av koblingsplint som er vist i fig. 3 er en typisk "bryteplint", f.eks. laget av Krone AS, Oslo under betegnelsen LSA-PLUS®. In fig. 2 shows, seen from the side, a typical connection terminal, here for the sake of simplicity named with the reference number 22. The connection terminal in fig. 2 is seen from the output side. The connecting terminal consists of a box part 22' and a lid part 22", the lid part can be brought down over the box part 22' and there snapped into place or fixed in another way. The connecting terminal is provided with knife contacts 23 and 23' for each line, as is more clearly evident of Fig. 3. In the example in Fig. 3, the knife contacts 23 and 23' at the bottom merge into respective cross-connection elements 24 and 24'. The type of connection terminal shown in Fig. 3 is a typical "switch terminal", e.g. made by Krone AS, Oslo under the designation LSA-PLUS®.
Krysskoblingsdelene 24, 24' bevirker at de to knivkontaktene 23 og 23' er galvanisk i kontakt med hverandre, og krysskoblingsdelene 24, 24' representerer således f.eks. forbindelsen 11 på fig. 1. The cross-connecting parts 24, 24' cause the two knife contacts 23 and 23' to be in galvanic contact with each other, and the cross-connecting parts 24, 24' thus represent e.g. connection 11 in fig. 1.
Krysskoblingskontaktene 24, 24' kan eventuelt tvinges fra hverandre ved hjelp av bryteplugg (ikke vist) som kan innføres gjennom et hull 25 i dekslet 22'. Dersom The cross-connection contacts 24, 24' can optionally be forced apart by means of a breaking plug (not shown) which can be inserted through a hole 25 in the cover 22'. If
krysskoblingsdelene 24 og 24' er i avstand fra hverandre, betegnes plinten 22 som en "skilleplint". Dersom delene 24 og 24' eventuelt utgjøres av en enhetlig del, dvs. at også knivene 23 og 23' er enhetlige, benevnes plinten som en "koblingsplint". Slike the cross-connecting parts 24 and 24' are at a distance from each other, the terminal 22 is referred to as a "separating terminal". If the parts 24 and 24' are possibly made up of a uniform part, i.e. that the blades 23 and 23' are also uniform, the terminal is referred to as a "connecting terminal". Such
ytterligere varianter er i og for seg kjente for fagmannen og markedsføres blant annet av firmaet Krone AS, Oslo. further variants are in and of themselves known to the person skilled in the art and are marketed, among others, by the firm Krone AS, Oslo.
Det krysskraverte området i fig. 3 betegnet med henvisningstallet 26 er normalt beregnet for fastgjøring til holdeskinner eller lignende. The cross-hatched area in fig. 3 denoted by the reference number 26 is normally intended for attachment to holding rails or the like.
Som vist på fig. 2 er f.eks. to ledningspar på koblingsplinten 22, f.eks. lednings-parene IA, B og 2A, B avsluttet i en motstandskomponent, henholdsvis 27 og 28. Dersom det er lite tilgjengelig plass i plintboksen 22', kan motstandskomponentene 27, 28 eventuelt være såkalte overflatemonterte innretninger (SMD). En vesentlig høyde av den boksformede delen 22' av plinten 22 fylles med et støpemateriale 29, f.eks. en epoksy, som utfyller en vesentlig del av det tilgjengelige hulrom i boksen 22', idet særlig nedre parti av knivkontaktene 23, 23' dekkes av dette støpematerialet i tillegg til at en del av kontaktdelen 24, 24' blir nederst dekket. I tillegg blir, som vist i fig. 3 og som antydet med skraveringen i fig. 2 også motstandskomponenten 27 (og 28) dekket av dette støpematerialet 29. Dette gir for det første den fordel at plinten 22 får elektriske komponenter som ved innstøpningen er beskyttet mot ytre påkjenninger, slik som f.eks. kondens, fuktighet, vibrasjoner, støv, smuss eller forurensninger, men ikke minst viktig er det at slike komponenter ikke vil kunne fjernes, slik som komponenten 27 (og eventuelt 28). As shown in fig. 2 is e.g. two wire pairs on the terminal block 22, e.g. the wire pairs IA, B and 2A, B terminated in a resistance component, 27 and 28 respectively. If there is little available space in the terminal box 22', the resistance components 27, 28 can possibly be so-called surface-mounted devices (SMD). A substantial height of the box-shaped part 22' of the plinth 22 is filled with a casting material 29, e.g. an epoxy, which fills a substantial part of the available cavity in the box 22', in particular the lower part of the knife contacts 23, 23' being covered by this molding material in addition to a part of the contact part 24, 24' being covered at the bottom. In addition, as shown in fig. 3 and as indicated by the shading in fig. 2 also the resistance component 27 (and 28) covered by this casting material 29. This gives, firstly, the advantage that the terminal block 22 gets electrical components which are protected against external stresses during the casting, such as e.g. condensation, moisture, vibrations, dust, dirt or contamination, but not least important is that such components will not be able to be removed, such as component 27 (and possibly 28).
Selv om det her er vist og beskrevet at støpematerialet fortrinnsvis tilføres koblingsplintens boksdel som en etterforsegling, er det allikevel tenkelig at det ved hjelp av passende teknikk kunne skje en direkte innstøpning i selve boksens 22' legeme. Although it has been shown and described here that the casting material is preferably added to the box part of the terminal block as a post-seal, it is still conceivable that, with the help of suitable techniques, a direct embedment could take place in the body of the box 22' itself.
Innstøpningen har også den fordel at den på en effektiv måte beskytter det ombøyde partiet nederst på knivkontaktene 23, 23' mot typisk korrosjon. The casting also has the advantage that it effectively protects the bent part at the bottom of the knife contacts 23, 23' against typical corrosion.
Etter at ledninger er montert på plinten, vil man fra sentralen via f.eks. ledningspar 3, 3' kunne foreta en innmåling på linjen for å definere dens karakteristiske motstands-verdi, hvorved man senere lett kan se hvorvidt det foregår en tapping eller manipulering av telelinjen. Slik etterkontrollering av telelinjens impedans kan skje eventuelt automatisk eller på annen regelmessig måte, slik at eventuell forringelse eller manipulering av kabelen ut fra sentralen 1 lett blir oppdaget. På denne måte vil netteieren få en god mulighet til å rette opp eventuelle feil eller forsøk på svindling lenge før kunden eventuelt merker noe. Eventuell tapping av linjen på bruker-siden vil få liten betydning for telelinjens impedans slik den sees fra netteierens sentral 1, mens tapping på netteier-siden av grensesnittet gir umiddelbar og lett registrerbar endring av impedansen. After the wires have been mounted on the terminal, one will from the central via e.g. pair of wires 3, 3' could take a measurement on the line to define its characteristic resistance value, whereby one can later easily see whether there is tapping or manipulation of the telecommunications line. Such post-checking of the telephone line's impedance can possibly take place automatically or in another regular way, so that any deterioration or manipulation of the cable from the exchange 1 is easily detected. In this way, the network owner will have a good opportunity to correct any errors or attempted fraud long before the customer notices anything. Any tapping of the line on the user side will have little effect on the impedance of the telecommunications line as seen from the network owner's central 1, while tapping on the network owner's side of the interface results in an immediate and easily detectable change in impedance.
På denne måte vil netteieren kunne tilby sine kunder maksimal service, et sikkert nett og det oppnås derved en større tillit hos kundene. In this way, the network owner will be able to offer its customers maximum service, a secure network and thereby achieve greater customer trust.
Et viktig poeng ved den foreliggende oppfinnelse er at netteieren vil kunne få en total overvåkning av sine linjer frem til grensesnittet mot brukeren, idet det på nettbruker-siden av grensesnittet i realitet er fri konkurranse og man kan operere med mange forskjellige leverandører, selv hos en og samme kunde. An important point of the present invention is that the network owner will be able to have total monitoring of his lines up to the interface to the user, since on the network user side of the interface there is in reality free competition and you can operate with many different suppliers, even with a and the same customer.
Claims (8)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO960065A NO960065L (en) | 1996-01-05 | 1996-01-05 | Method and Device for Providing Transition Between Web Owner's Website and Network User's Website in a Telecommunications Network |
AU20173/97A AU2017397A (en) | 1996-01-05 | 1997-01-03 | Method and device for network termination |
PCT/NO1997/000003 WO1997025806A1 (en) | 1996-01-05 | 1997-01-03 | Method and device for network termination |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO960065A NO960065L (en) | 1996-01-05 | 1996-01-05 | Method and Device for Providing Transition Between Web Owner's Website and Network User's Website in a Telecommunications Network |
Publications (2)
Publication Number | Publication Date |
---|---|
NO960065D0 NO960065D0 (en) | 1996-01-05 |
NO960065L true NO960065L (en) | 1997-07-07 |
Family
ID=19898909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO960065A NO960065L (en) | 1996-01-05 | 1996-01-05 | Method and Device for Providing Transition Between Web Owner's Website and Network User's Website in a Telecommunications Network |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU2017397A (en) |
NO (1) | NO960065L (en) |
WO (1) | WO1997025806A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10107100A1 (en) * | 2001-02-13 | 2002-12-05 | Profichip Gmbh | Plug device with integrated diagnosis and evaluation circuit and switchable terminating resistor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4764950A (en) * | 1986-12-19 | 1988-08-16 | American Telephone & Telegraph Company, At&T Bell Laboratories | Snap-on network interface unit |
GB8925005D0 (en) * | 1989-11-06 | 1989-12-28 | Mercury Communications | Fraud control system |
SE469705B (en) * | 1991-09-12 | 1993-08-23 | Teli Ab | Connector in the form of a primary telephone jack |
GB9200332D0 (en) * | 1992-01-08 | 1992-02-26 | Plessey Telecomm | Termination unit with maintenance facility |
US5355408A (en) * | 1992-10-26 | 1994-10-11 | Siecor Corporation | Network interface device with environmentally protected compartment |
DE4421615C1 (en) * | 1994-06-21 | 1996-12-05 | Matthias Dipl Ing Viehmann | Circuit arrangement for external interference protection for the wired telephone network |
-
1996
- 1996-01-05 NO NO960065A patent/NO960065L/en unknown
-
1997
- 1997-01-03 AU AU20173/97A patent/AU2017397A/en not_active Abandoned
- 1997-01-03 WO PCT/NO1997/000003 patent/WO1997025806A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
AU2017397A (en) | 1997-08-01 |
NO960065D0 (en) | 1996-01-05 |
WO1997025806A1 (en) | 1997-07-17 |
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