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AU509005B2 - Telephone extension system utilising available powerlines - Google Patents
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AU509005B2 - Telephone extension system utilising available powerlines - Google Patents

Telephone extension system utilising available powerlines

Info

Publication number
AU509005B2
AU509005B2 AU12488/76A AU1248876A AU509005B2 AU 509005 B2 AU509005 B2 AU 509005B2 AU 12488/76 A AU12488/76 A AU 12488/76A AU 1248876 A AU1248876 A AU 1248876A AU 509005 B2 AU509005 B2 AU 509005B2
Authority
AU
Australia
Prior art keywords
powerlines
extension system
telephone extension
system utilising
utilising available
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
AU12488/76A
Other versions
AU1248876A (en
Inventor
John M. Ruddy and Robertt. Dunn William M. Brown
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.)
Astech Inc
Original Assignee
Astech Inc
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
Priority to US05/440,830 priority Critical patent/US3949172A/en
Priority claimed from US05/440,830 external-priority patent/US3949172A/en
Application filed by Astech Inc filed Critical Astech Inc
Priority to GB12993/76A priority patent/GB1548652A/en
Priority to FR7609850A priority patent/FR2347835A1/en
Priority to CA249,608A priority patent/CA1057436A/en
Priority to DE2645087A priority patent/DE2645087C2/en
Publication of AU1248876A publication Critical patent/AU1248876A/en
Application granted granted Critical
Publication of AU509005B2 publication Critical patent/AU509005B2/en
Expired legal-status Critical Current

Links

AU12488/76A 1974-02-08 1976-03-30 Telephone extension system utilising available powerlines Expired AU509005B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US05/440,830 US3949172A (en) 1974-02-08 1974-02-08 Telephone extension system utilizing power line carrier signals
GB12993/76A GB1548652A (en) 1974-02-08 1976-03-31 Telephone extension system utilizing power line carrier signals
FR7609850A FR2347835A1 (en) 1974-02-08 1976-04-05 CARRIER FREQUENCY TELEPHONE INSTALLATION ON AN ELECTRIC CURRENT DISTRIBUTION LINE
CA249,608A CA1057436A (en) 1974-02-08 1976-04-05 Telephone extension system utilizing power line carrier signals
DE2645087A DE2645087C2 (en) 1974-02-08 1976-10-06 PBX

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US05/440,830 US3949172A (en) 1974-02-08 1974-02-08 Telephone extension system utilizing power line carrier signals
FR7609850A FR2347835A1 (en) 1974-02-08 1976-04-05 CARRIER FREQUENCY TELEPHONE INSTALLATION ON AN ELECTRIC CURRENT DISTRIBUTION LINE
DE2645087A DE2645087C2 (en) 1974-02-08 1976-10-06 PBX

Publications (2)

Publication Number Publication Date
AU1248876A AU1248876A (en) 1977-10-06
AU509005B2 true AU509005B2 (en) 1980-04-17

Family

ID=27186991

Family Applications (1)

Application Number Title Priority Date Filing Date
AU12488/76A Expired AU509005B2 (en) 1974-02-08 1976-03-30 Telephone extension system utilising available powerlines

Country Status (1)

Country Link
AU (1) AU509005B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001481A1 (en) * 1982-09-30 1984-04-12 Astech Inc Telephone extension system
EP0128416A3 (en) * 1983-06-06 1986-05-14 Siemens Aktiengesellschaft Arrangement for the switchable transmission of audio signals

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6107912A (en) 1997-12-08 2000-08-22 Phonex Corporation Wireless modem jack

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001481A1 (en) * 1982-09-30 1984-04-12 Astech Inc Telephone extension system
EP0128416A3 (en) * 1983-06-06 1986-05-14 Siemens Aktiengesellschaft Arrangement for the switchable transmission of audio signals

Also Published As

Publication number Publication date
AU1248876A (en) 1977-10-06

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