WO1979001145A1 - Monitoring device for monitoring telephone calls coming through a subscriber station - Google Patents

Monitoring device for monitoring telephone calls coming through a subscriber station Download PDF

Info

Publication number
WO1979001145A1
WO1979001145A1 PCT/CH1979/000076 CH7900076W WO7901145A1 WO 1979001145 A1 WO1979001145 A1 WO 1979001145A1 CH 7900076 W CH7900076 W CH 7900076W WO 7901145 A1 WO7901145 A1 WO 7901145A1
Authority
WO
WIPO (PCT)
Prior art keywords
des
par
dispositif
moyens
détection
Prior art date
Application number
PCT/CH1979/000076
Other languages
German (de)
English (en)
French (fr)
Inventor
P De Toledo
Original Assignee
P De Toledo
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 P De Toledo filed Critical P De Toledo
Priority to DE19792952814 priority Critical patent/DE2952814A1/de
Publication of WO1979001145A1 publication Critical patent/WO1979001145A1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/663—Preventing unauthorised calls to a telephone set
    • H04M1/665—Preventing unauthorised calls to a telephone set by checking the validity of a code

Definitions

  • the present invention a pour object un geber de contr ⁇ le des appels telephoniques arrivant a un station d 'abonne.
  • the present invention is pouring but Councile de contr ⁇ ler les appels marc de declencher la sonnerie d'appel de la Station d'abonne.
  • the geber comporte en outre learning relais RV1, RV2 and RV3 dont 1 'excitation est contrôlée respectivement par le contact du récepteur RFl, RF3 et RF5.
  • MEN des relais RVl, RV2 and RV3 commandeizi-threll'un de ses contacts, un relais auxiliaire RL1, respectivement RL2 and RL3 comportant confusem contacts de travel branchés en73 sur tests des fils d'une capita e reliant la Station d'abonne a la capita a / b.
  • the geber est involve pret à réelle le signal sonore code envoye sur la capita par l'abonn ⁇ appelant.
  • the relais RVl remains maintenu par l'un de ses contacts apres l'vette du contact du recepteur RFl.
  • the relais auxiliaire RLl est excite à travers l'un des contacts du relais RVl.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Alarm Systems (AREA)
PCT/CH1979/000076 1978-05-30 1979-05-25 Monitoring device for monitoring telephone calls coming through a subscriber station WO1979001145A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792952814 DE2952814A1 (de) 1978-05-30 1979-05-25 Monitoring device for monitoring telephone calls coming through a subscriber station

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5878/78 1978-05-30
CH587878A CH623695A5 (sv) 1978-05-30 1978-05-30

Publications (1)

Publication Number Publication Date
WO1979001145A1 true WO1979001145A1 (en) 1979-12-27

Family

ID=4300837

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1979/000076 WO1979001145A1 (en) 1978-05-30 1979-05-25 Monitoring device for monitoring telephone calls coming through a subscriber station

Country Status (5)

Country Link
CH (1) CH623695A5 (sv)
FR (1) FR2427748A1 (sv)
GB (1) GB2037540B (sv)
SE (1) SE420555B (sv)
WO (1) WO1979001145A1 (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559290A1 (fr) * 1982-01-28 1985-08-09 Int Mobile Machines Systeme de commande actionne par le son

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2203614A (en) * 1987-04-09 1988-10-19 British Broadcasting Corp Control of access to a telephone
GB2240903B (en) * 1990-02-13 1994-07-13 Proton Communications Automatic telephone call interceptor and interrogator devices

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2278214A1 (fr) * 1974-06-28 1976-02-06 Int Mobile Machines Dispositif telephonique comprenant un element d'inhibition de sonnerie

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2278214A1 (fr) * 1974-06-28 1976-02-06 Int Mobile Machines Dispositif telephonique comprenant un element d'inhibition de sonnerie

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2559290A1 (fr) * 1982-01-28 1985-08-09 Int Mobile Machines Systeme de commande actionne par le son

Also Published As

Publication number Publication date
GB2037540A (en) 1980-07-09
SE8000586L (sv) 1980-01-25
SE420555B (sv) 1981-10-12
CH623695A5 (sv) 1981-06-15
FR2427748A1 (fr) 1979-12-28
GB2037540B (en) 1982-08-18
FR2427748B1 (sv) 1982-06-11

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