GB8709627D0 - Telephone interface circuit - Google Patents

Telephone interface circuit

Info

Publication number
GB8709627D0
GB8709627D0 GB878709627A GB8709627A GB8709627D0 GB 8709627 D0 GB8709627 D0 GB 8709627D0 GB 878709627 A GB878709627 A GB 878709627A GB 8709627 A GB8709627 A GB 8709627A GB 8709627 D0 GB8709627 D0 GB 8709627D0
Authority
GB
United Kingdom
Prior art keywords
interface circuit
telephone interface
telephone
circuit
interface
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.)
Granted
Application number
GB878709627A
Other versions
GB2189968B (en
GB2189968A (en
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB8709627D0 publication Critical patent/GB8709627D0/en
Publication of GB2189968A publication Critical patent/GB2189968A/en
Application granted granted Critical
Publication of GB2189968B publication Critical patent/GB2189968B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04M1/253—Telephone sets using digital voice transmission
GB8709627A 1986-04-28 1987-04-23 Telephone interface circuit Expired - Fee Related GB2189968B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868610348A GB8610348D0 (en) 1986-04-28 1986-04-28 Telephone interface circuit

Publications (3)

Publication Number Publication Date
GB8709627D0 true GB8709627D0 (en) 1987-05-28
GB2189968A GB2189968A (en) 1987-11-04
GB2189968B GB2189968B (en) 1990-01-04

Family

ID=10596974

Family Applications (2)

Application Number Title Priority Date Filing Date
GB868610348A Pending GB8610348D0 (en) 1986-04-28 1986-04-28 Telephone interface circuit
GB8709627A Expired - Fee Related GB2189968B (en) 1986-04-28 1987-04-23 Telephone interface circuit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB868610348A Pending GB8610348D0 (en) 1986-04-28 1986-04-28 Telephone interface circuit

Country Status (2)

Country Link
DE (1) DE3714119A1 (en)
GB (2) GB8610348D0 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1547671A1 (en) * 1988-07-20 1991-09-07 Предприятие П/Я Р-6609 Digital commutating systems
US5235635A (en) * 1990-09-27 1993-08-10 Advanced Micro Devices, Inc. Keypad monitor with keypad activity-based activation
DE4228801A1 (en) * 1991-10-03 1993-04-08 Standard Elektrik Lorenz Ag SUBSCRIBER TERMINAL FOR ISDN NETWORKS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087638A (en) * 1976-10-01 1978-05-02 Telaris Telecommunications Inc. DTMF Communication system
DE3323592A1 (en) * 1983-06-30 1985-01-10 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for connecting data terminal equipment or modems to digital connection lines of a digital switching system, in particular a digital telephone switching system
US4524244A (en) * 1983-08-05 1985-06-18 Cygnet Technologies, Inc. Digital and voice telecommunication apparatus

Also Published As

Publication number Publication date
DE3714119A1 (en) 1987-10-29
GB8610348D0 (en) 1986-06-04
GB2189968B (en) 1990-01-04
GB2189968A (en) 1987-11-04

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970423