CA984983A - Telephone answering system - Google Patents

Telephone answering system

Info

Publication number
CA984983A
CA984983A CA173,733A CA173733A CA984983A CA 984983 A CA984983 A CA 984983A CA 173733 A CA173733 A CA 173733A CA 984983 A CA984983 A CA 984983A
Authority
CA
Canada
Prior art keywords
answering system
telephone answering
telephone
answering
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.)
Expired
Application number
CA173,733A
Other languages
English (en)
Other versions
CA173733S (en
Inventor
Jack St. Clair Kilby
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA984983A publication Critical patent/CA984983A/en
Expired legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Telephonic Communication Services (AREA)
  • Prepayment Telephone Systems (AREA)
CA173,733A 1972-06-26 1973-06-11 Telephone answering system Expired CA984983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26649072A 1972-06-26 1972-06-26

Publications (1)

Publication Number Publication Date
CA984983A true CA984983A (en) 1976-03-02

Family

ID=23014788

Family Applications (1)

Application Number Title Priority Date Filing Date
CA173,733A Expired CA984983A (en) 1972-06-26 1973-06-11 Telephone answering system

Country Status (8)

Country Link
JP (1) JPS4952506A (enrdf_load_stackoverflow)
BE (1) BE801478A (enrdf_load_stackoverflow)
CA (1) CA984983A (enrdf_load_stackoverflow)
DE (1) DE2332244C2 (enrdf_load_stackoverflow)
GB (1) GB1432983A (enrdf_load_stackoverflow)
IT (1) IT986215B (enrdf_load_stackoverflow)
NL (1) NL7308862A (enrdf_load_stackoverflow)
SE (1) SE382293B (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5399802A (en) * 1977-02-14 1978-08-31 Nippon Telegr & Teleph Corp <Ntt> Specific subscriber calling equipment of automatic answering telephone set
JPS53132911A (en) * 1977-04-26 1978-11-20 Iwatsu Electric Co Ltd Telephone set
JPS53146511A (en) * 1977-05-26 1978-12-20 Toyo Communication Equip Caller identifying telephone set
JPS5648160U (enrdf_load_stackoverflow) * 1980-09-04 1981-04-28
DE3405014A1 (de) * 1984-02-13 1985-08-14 Telefonbau Und Normalzeit Gmbh, 6000 Frankfurt Verfahren fuer den betrieb eines telefon-anrufbeantworters
GB2183125B (en) * 1985-10-10 1989-11-29 Microcompass Ltd Improvements to communication apparatus
DE19511622A1 (de) 1995-03-30 1996-10-02 Michael Wolf Türrufbeantworter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1283074A (fr) * 1961-03-08 1962-01-27 Installation téléphonique d'abonné
DE1437906B2 (de) * 1965-04-17 1970-03-26 Blessing, Dipl.-Kfm. Dr. Gerhard, 7336 Uhingen Schaltungsanordnung für eine Zusatzeinrichtung an Fernsprechteilnehmerstellen
JPS4831810A (enrdf_load_stackoverflow) * 1971-08-30 1973-04-26

Also Published As

Publication number Publication date
SE382293B (sv) 1976-01-19
GB1432983A (en) 1976-04-22
NL7308862A (enrdf_load_stackoverflow) 1973-12-28
DE2332244C2 (de) 1984-04-05
JPS4952506A (enrdf_load_stackoverflow) 1974-05-22
IT986215B (it) 1975-01-20
DE2332244A1 (de) 1974-01-17
BE801478A (fr) 1973-10-15

Similar Documents

Publication Publication Date Title
CA968479A (en) Telephone answering system
CA977479A (en) Telephone dialling arrangement
CA987780A (en) Phantom subscriber
CA973984A (en) Telephone looptest system
CA1024279A (en) Electronic time-division-multiplexed pabx telephone system
ZA717068B (en) Telephone dialling system
CA985811A (en) Automatic telephone answering device
CA993582A (en) Loud speaking telephone set
CA1036277A (en) Telephone systems
CA936981A (en) Telephone answering system
CA966944A (en) Key telephone call distributing system
CA984983A (en) Telephone answering system
CA983185A (en) Automatic telephone answering apparatus
CA998150A (en) Telephone switching system
AU5156373A (en) Telephone system
AU5933173A (en) Telephone systems
CA983184A (en) Key telephone system
CA900632A (en) Telephone extension system
AU458841B2 (en) Telephone system
CA865229A (en) Telephone answering system
CA902175A (en) Cordless telephone system
AU459387B2 (en) Telephone line isolating unit
CA906629A (en) Automatic telephone system
CA916325A (en) Automatic answering telephone set
CA849637A (en) Telephone answering means