WO1988002968A1 - Systeme telephonique avec poste d'interphone pour l'ouverture d'une porte - Google Patents

Systeme telephonique avec poste d'interphone pour l'ouverture d'une porte Download PDF

Info

Publication number
WO1988002968A1
WO1988002968A1 PCT/AU1987/000340 AU8700340W WO8802968A1 WO 1988002968 A1 WO1988002968 A1 WO 1988002968A1 AU 8700340 W AU8700340 W AU 8700340W WO 8802968 A1 WO8802968 A1 WO 8802968A1
Authority
WO
WIPO (PCT)
Prior art keywords
telephone
communications system
switching means
communications
line
Prior art date
Application number
PCT/AU1987/000340
Other languages
English (en)
Inventor
Clifford Jack Peady
Original Assignee
Clifford Jack Peady
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 Clifford Jack Peady filed Critical Clifford Jack Peady
Publication of WO1988002968A1 publication Critical patent/WO1988002968A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/025—Door telephones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching

Definitions

  • the present invention relates to a communications system, and in particular, to a telephone system in whic a telephone handset may selectively communicate to eithe an intercom/ security system or a telephone exchange network, such that, for example, a door may be answered and opened via the telephone handset.
  • communicatio units which are adapted to operate as conventional telephone handsets as well as intercom units. That is, these known communication units utilise the same handset to communicate with either external telephone handsets via an external telephone line, or with another internal handset. Generally, if an external line is required, an access code is dialed, and then, the telephone is connected to the external line. If an internal number is required, the number is simply dialed, for connection thereto. The telephone handset therefore is selectively electrically connected to one of two lines, internal or external, depending on the line selected by the operator.
  • the present invention seeks to overcome the disadvantages of prior art telephone/intercom systems, by providing a composite system which may be utilised as a conventional telephone handset, and which also may be connected to an intercom unit.
  • the present invention also seeks to provide a telephone system with a door station which, if a call button on the door station is operated, a tone is supplied to the telephone handset, whether or not said handset is previously connected to an external telephone call.
  • the present invention also seeks to provide a telephone system with a door station which is adapted to operate as an intercom and which may further be adapted to operate a lock to open a door.
  • the present invention provides a communications system comprising: at least one communications link connected at a first end thereof to an exchange network; at least one transceiver unit connected to a second end of each of said communication links; switching means disposed along each of said communications links; and, an intercom station connected to said switching means; such that, each of said transceiver units may selectively communicate with either said exchange network or said intercom station by operation of said switching means.
  • Fig. 1 is shown a schematic diagram of a typical domestic telephone installation, presently known.
  • the telephone line 2 is connected from the telephone exchange network (not shown) to a socket 3.
  • a telephone handset 1 is then plugged into the socket 3 via plug 4.
  • any parallel telephone extensions enabling further telephone handsets 5 to be connected to the telephone line 2, are connected, in parallel, as shown via line 6.
  • Fig. 2 is illustrated, an embodiment of the communications system in accordance with the present invention, that is, the inclusion of a switching unit 7 and a door station 9, within the installation of Fig. 1.
  • the switching unit 7 is connected to a plug 8 via line 11, which may be inserted into socket 3.
  • the input of the switching unit 7 is also connected to the door station 9 via line 12.
  • Either of the lines 11 or 12 may be selected by the switching means 10, which is controlled by any suitable control means, examples of which will be described hereinafter.
  • the telephone handset 1 is connected via its plug into the switching unit 7. If further parallel extensions are required, they are also connected into the switching unit 7, in parallel, such that the normal telephone line 2 or the door station 9 may be answered by any of the telephone handsets 1 or 5.
  • FIG. 3 is shown an embodiment of a simplified block diagram illustrating a typical installation of the telephone system with a door station, in accordance with the present invention.
  • Fig. 3 shows a plurality of telephone lines 13 being inputted to a telephone distribution box 14 of, for example, a home unit or apartment building, having six home units and, consequently, six telephone handsets 15 to 20.
  • Each separate telephone line 13 is connected to separate switches 22 within a switching unit 21, which consequently connect to the telephones 15 to 20 for normal telephone operation.
  • Each of switches 22 may alternatively connect the telephones 15 to 20 to a door button and speaker unit 23, containing six separate door buttons 24, and a common single speaker unit 25.
  • the switches 22 are operated by suitable control means, such that, upon activation of one of the door buttons 24, one of the six lines 26 may be connected to its respective telephone handset 15 to 20.
  • the control means are preferably designed to provide a signal to the appropriate telephone 15 to 20 upon depression of its respective switch 24, whether or not the telephone 15 to 20 is currently in use. Upon receipt of such a signal, the telephone 15 to 20 is then able to communicate with the door button and speaker unit 23, and if desired, the lock of a security door may be activated such that it may be opened. After finalisation of the communication with the door button and speaker unit 23, the control means then allows the telephone handset 15 to 20 to resume normal operation with the telephone line 13. Fig.
  • FIG. 3 illustrates that the present invention is particularly suitable for home unit or apartment buildings, in which a telephone network is presently incorporated, but which is not, at present, a security block having an intercom system and which allows a security door to be opened from any unit.
  • the switching unit 21 is simply installed adjacent the telephone distribution box 14 of the home unit building.
  • a major advantage of the present invention is that very little excess wiring is required in addition to the normal telephone system.
  • a system in accordance with the present invention eliminates the problems of installing the necessary wiring of separate intercom instruments in each unit.
  • Fig. 4 r is detailed a circuit diagram of a preferred embodiment of the present invention.
  • the telephone lines 27 are connected via Kl and K3 contacts to the telephone(s) 28.
  • Current on the telephone line 27 is monitored by opto-isolators Ml and M2 (for each current direction) and when the telephone 28 is in use, relay K5 is operated via transistor Ql.
  • Relay K5 is held operated during the dialing operation by means of a capacitor Cl and resistor R5.
  • Relay K6 is also operated by K5/2 contacts, as illustrated in the circuit generally designated 39, but no other circuit action occurs during normal telephone use. Operation of the door station push button 29 causes the operation of rela K2, and also of relay K3 if the telephone 28 is not in use.
  • the line 27 is isolated by K3 contacts and ringing current is connected to the telephone from the ringing tone generator 30. If the telephone 28 is in use, relay K3 will not operate and th ringing current circuit 30 is connected to the line via resistor R2 and diode Dl, resulting in a low level tone in the telephone 28.
  • the telephone hand-set 28 is lifted and the line 27 is seize as for a normal telephone call, relays K5 and K6 operating as described above. A 'hookflash' on the telephone line 27 then releases relay K5 but K6 remains operated by means of capacitor C2 and resistor R6. Relays Kl and K4 are operated via K5/2 and K6/2 contacts.
  • relay K5 re-operates and relays Kl and K4 remain operate via diode D2, resistor R7 and K5/2 contacts.
  • Kl contacts isolate the line 27 and, together with K4 contacts, connect the telephone 28 to the speaker 41 of the door station 31 via a coupling circuit comprising resistors R8, R9 and R10 and capacitor C3. If it is required to open the door from the telephone 28, a further
  • 'hookflash' causes the current to the door station 31 to be interrupted by K5/1 contacts. This will be detected in the door station circuit and cause operation of the unlocking device.
  • the required supply voltages for circuit operation are provided by the supply circuit, generally designated by the numeral 40.
  • 'Hookflash' is a signal which is commonly used in telephone systems particularly in P.A.B.X.s.
  • a 'hookflash' is a brief depression of the telephone cradle switch, which results in an interruption to the current on the line. It has the advantage that it requires to modifications or additions to the basic telephone, and can be performed on any telephone irrespective of the type of signalling.
  • the normal hookflash time interval is one half second (or 500 milliseconds) .
  • Detecting circuits are usually arranged to respond to line interruptions between 200 milliseconds and one second. Telephones are available equipped with a special button, which, when pressed, produce a properly timed line interruption (or hookflash) .
  • Fig. 5 is detailed a circuit diagram of an alternative embodiment of the present invention.
  • the telephone line 32 is connected via contacts of relays Kl and K2 to the telephone(s) 33.
  • Current on the line 32 is monitored by the dual opto-isolator Ml, and, when a telephone 33 is in use, a signal is passed into the microprocessor 35. No other circuit action occurs during normal telephone use. Operation of the door station push button 34 causes a signal to be passed into the microprocessor 35. If the telephone is not in use, the microprocessor 35 causes the triac 36 to be turned on and the operation of relay K2. Ringing current circuit 37 is connected to the telephone(s) 33 and the line 32 is isolated by K2 contacts.
  • relay K2 will not be operated and the ringing current circuit 37 is connected to the line via resistor R2 and diode Dl, resulting in a low level tone in the telephone 33.
  • the handset 33 is lifted and the line 32 is seized as for a normal telephone call, connecting the handset 33 to the speaker 42 of the door station 38, as described hereinabove.
  • a hookflash on the telephone 33 causes an interruption to the line current, which is timed by the microprocessor 35. The timing is such that normal dialling on the line is ignored, also the interruption when a call is ended.
  • a correctly timed hookflash results in the operation of relay Kl, which isolates the line 32 and connects the telephone 33 directly to the door station.
  • a further hookflash causes the current to the door station 38 to be interrupted. This will be detected in the door station circuit and cause operation of the unlocking device. Replacing the the telephone handset 33 for a period longer than a hookflash (i.e. longer than 1 second) causes the microprocessor 35 to release relay Kl and th circuit restores to its normal condition.
  • the microprocessor can provide additional features, such as described hereinbelow.
  • hookflash signal i In telephone networks where the hookflash signal i in use, it would be arranged that a hookflash performed only in the initial period of a call (say within 10 seconds of lifting the handset) results in a connection to the door station. A hookflash performed after that period would be transmitted to the telephone network in the normal manner.
  • a predetermined cadence of ringing is applied, e.g. three long rings.
  • the present invention therefore provides a telephone system with a door station, which is easily implemented to provide a security intercom system connected to a conventional telephone system.
  • the system is particularly suited to home units and apartment buildings which are equipped with a telephone system, but which presently do not have — g —

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Sub-Exchange Stations And Push- Button Telephones (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)

Abstract

Un système de communications téléphoniques comprend au moins une liaison téléphonique (13) connectée par une première extrémité à un réseau de central, au moins un émetteur-récepteur (15-20) connecté à une seconde extrémité de chacune desdites liaisons téléphoniques (13), un commutateur (22) disposé le long desdites liaisons téléphoniques et un poste d'interphone (25) connecté audit commutateur, de sorte que chacun des émetteurs-récepteurs (15-20) peut communiquer sélectivement soit avec le réseau de central via la liaison téléphonique (13) soit avec le poste d'interphone (25) par actionnement dudit commutateur (22).
PCT/AU1987/000340 1986-10-08 1987-10-07 Systeme telephonique avec poste d'interphone pour l'ouverture d'une porte WO1988002968A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPH838686 1986-10-08
AUPH8386 1986-10-08

Publications (1)

Publication Number Publication Date
WO1988002968A1 true WO1988002968A1 (fr) 1988-04-21

Family

ID=3771848

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1987/000340 WO1988002968A1 (fr) 1986-10-08 1987-10-07 Systeme telephonique avec poste d'interphone pour l'ouverture d'une porte

Country Status (1)

Country Link
WO (1) WO1988002968A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0584299A1 (fr) * 1992-01-09 1994-03-02 Square D Company Systeme de distribution basse-frequence ameliore designe pour une application connexe
FR2698229A1 (fr) * 1992-11-19 1994-05-20 Vanypre Alain Système de commande à distance d'ouverture de porte au moyen d'un poste téléphonique.
FR2704018A1 (fr) * 1993-04-16 1994-10-21 Etudes Realis Protect Electron Agencement de contrôle à distance de dispositifs d'équipement d'un habitat.
WO1996002998A1 (fr) * 1994-07-18 1996-02-01 Manfred Trautvetter Systeme de sonnette et/ou systeme de portier multiple
GB2294607A (en) * 1994-10-27 1996-05-01 Paul Hinderer Telephone intercom
ES2126532A1 (es) * 1997-08-06 1999-03-16 Jimenez Pedro Ojeda Sistema de portero automatico via linea telefonica.
KR100474718B1 (ko) * 1997-10-07 2005-05-27 삼성전자주식회사 휴대무선단말기의 리모트 컨트롤러 장치 및 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484561A (en) * 1966-07-11 1969-12-16 Automatic Elect Lab Apartment telephone-intercom and door release system
US3557318A (en) * 1966-09-29 1971-01-19 American Telephone & Telegraph Apartment house telephone system
US4100375A (en) * 1977-01-19 1978-07-11 David Lewis Noller Telephone, intercom and remote control system
US4485273A (en) * 1982-09-23 1984-11-27 Bartelink E H B Intercom adapter for telephones
US4588861A (en) * 1984-07-25 1986-05-13 Teich Rudor M Telephone intercom system
JPS61167256A (ja) * 1985-01-19 1986-07-28 Aihon Kk ドアホン電話機混成装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3484561A (en) * 1966-07-11 1969-12-16 Automatic Elect Lab Apartment telephone-intercom and door release system
US3557318A (en) * 1966-09-29 1971-01-19 American Telephone & Telegraph Apartment house telephone system
US4100375A (en) * 1977-01-19 1978-07-11 David Lewis Noller Telephone, intercom and remote control system
US4485273A (en) * 1982-09-23 1984-11-27 Bartelink E H B Intercom adapter for telephones
US4588861A (en) * 1984-07-25 1986-05-13 Teich Rudor M Telephone intercom system
JPS61167256A (ja) * 1985-01-19 1986-07-28 Aihon Kk ドアホン電話機混成装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, E-463, page 167; & JP,A,61 167 256 (AIHON K.K.) 28 July 1986 (28.07.86). *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0584299A1 (fr) * 1992-01-09 1994-03-02 Square D Company Systeme de distribution basse-frequence ameliore designe pour une application connexe
EP0584299A4 (fr) * 1992-01-09 1995-03-15 Square D Co Systeme de distribution basse-frequence ameliore designe pour une application connexe.
FR2698229A1 (fr) * 1992-11-19 1994-05-20 Vanypre Alain Système de commande à distance d'ouverture de porte au moyen d'un poste téléphonique.
WO1994011982A1 (fr) * 1992-11-19 1994-05-26 Alain Vanypre Systeme de commande a distance d'ouverture de porte au moyen d'un poste telephonique
FR2704018A1 (fr) * 1993-04-16 1994-10-21 Etudes Realis Protect Electron Agencement de contrôle à distance de dispositifs d'équipement d'un habitat.
WO1996002998A1 (fr) * 1994-07-18 1996-02-01 Manfred Trautvetter Systeme de sonnette et/ou systeme de portier multiple
AU691280B2 (en) * 1994-07-18 1998-05-14 Manfred Trautvetter Bell system and/or multiple door intercom system
GB2294607A (en) * 1994-10-27 1996-05-01 Paul Hinderer Telephone intercom
ES2126532A1 (es) * 1997-08-06 1999-03-16 Jimenez Pedro Ojeda Sistema de portero automatico via linea telefonica.
KR100474718B1 (ko) * 1997-10-07 2005-05-27 삼성전자주식회사 휴대무선단말기의 리모트 컨트롤러 장치 및 방법

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