FR2055523A5 - - Google Patents

Info

Publication number
FR2055523A5
FR2055523A5 FR7027203A FR7027203A FR2055523A5 FR 2055523 A5 FR2055523 A5 FR 2055523A5 FR 7027203 A FR7027203 A FR 7027203A FR 7027203 A FR7027203 A FR 7027203A FR 2055523 A5 FR2055523 A5 FR 2055523A5
Authority
FR
France
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
FR7027203A
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.)
AT&T Corp
Original Assignee
Western Electric Co 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
Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR2055523A5 publication Critical patent/FR2055523A5/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems
    • H04M9/005—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line
    • H04M9/007—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems with subscriber controlled access to an exchange line wherein the key telephone sets are star-connected to a central unit by a limited number of lines
FR7027203A 1969-07-25 1970-07-23 Expired FR2055523A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84491369A 1969-07-25 1969-07-25

Publications (1)

Publication Number Publication Date
FR2055523A5 true FR2055523A5 (fr) 1971-05-07

Family

ID=25293952

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7027203A Expired FR2055523A5 (fr) 1969-07-25 1970-07-23

Country Status (7)

Country Link
US (1) US3604857A (fr)
BE (1) BE753695A (fr)
DE (1) DE2036815C3 (fr)
FR (1) FR2055523A5 (fr)
GB (1) GB1317984A (fr)
NL (1) NL170215C (fr)
SE (1) SE370603B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2185909A1 (fr) * 1972-05-23 1974-01-04 Int Standard Electric Corp
DE2416122A1 (de) * 1973-04-04 1974-10-24 Plessey Handel Investment Ag Haustelefonanlage

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701854A (en) * 1970-12-21 1972-10-31 Bell Telephone Labor Inc Key telephone system call signaling and station set data transfer arrangement
CA923644A (en) * 1971-06-16 1973-03-27 Ebrahimi Jalal Line circuit for key telephone system
GB1400237A (en) * 1972-11-10 1975-07-16 Gte International Inc Automatic telephone exchange system
US3920902A (en) * 1973-04-05 1975-11-18 Nitsuko Ltd Off-premises station line circuit for a key telephone system
US4027110A (en) * 1973-12-05 1977-05-31 Iwasaki Tsushinki Kabushiki Kaisha Key telephone system
US3920928A (en) * 1974-03-29 1975-11-18 Bell Telephone Labor Inc Line control circuit
USRE29078E (en) * 1974-03-29 1976-12-14 Bell Telephone Laboratories, Incorporated Key telephone system
US3920929A (en) * 1974-03-29 1975-11-18 Bell Telephone Labor Inc Key telephone system
US3973085A (en) * 1974-09-26 1976-08-03 The Anaconda Company Key telephone system with directly associated station cards and sets
US4028498A (en) * 1974-10-07 1977-06-07 Solid State Systems, Inc. Private automatic branch exchange system and apparatus
US4061887A (en) * 1976-04-23 1977-12-06 Rolm Corporation Key telephone adapter for electronic telephone switching system
US4184054A (en) * 1977-03-28 1980-01-15 Tokyo Shibaura Electric Co., Ltd. Key telephone system
US4286118A (en) * 1979-07-02 1981-08-25 Solid State Systems, Inc. Data distribution system for private automatic branch exchange
JPS6022868B2 (ja) * 1979-07-03 1985-06-04 株式会社田村電機製作所 ボタン電話交換システム
US4381427A (en) * 1981-06-16 1983-04-26 Northern Telecom Limited Subscriber loop system for voice and data
US7844020B2 (en) * 2007-06-08 2010-11-30 Advantest Corporation Transmission system, transmitter, receiver, and transmission method

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385935A (en) * 1964-10-19 1968-05-28 Bell Telephone Labor Inc Key telephone system
US3420961A (en) * 1965-06-01 1969-01-07 Bell Telephone Labor Inc Time division key telephone system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2185909A1 (fr) * 1972-05-23 1974-01-04 Int Standard Electric Corp
DE2416122A1 (de) * 1973-04-04 1974-10-24 Plessey Handel Investment Ag Haustelefonanlage

Also Published As

Publication number Publication date
NL170215C (nl) 1982-10-01
DE2036815B2 (de) 1979-04-05
NL170215B (nl) 1982-05-03
GB1317984A (en) 1973-05-23
BE753695A (fr) 1970-12-31
DE2036815C3 (de) 1979-11-15
US3604857A (en) 1971-09-14
NL7010988A (fr) 1971-01-27
SE370603B (fr) 1974-10-21
DE2036815A1 (de) 1971-02-04

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Legal Events

Date Code Title Description
ST Notification of lapse