GB2225517B - Telephone circuits - Google Patents

Telephone circuits

Info

Publication number
GB2225517B
GB2225517B GB8827672A GB8827672A GB2225517B GB 2225517 B GB2225517 B GB 2225517B GB 8827672 A GB8827672 A GB 8827672A GB 8827672 A GB8827672 A GB 8827672A GB 2225517 B GB2225517 B GB 2225517B
Authority
GB
United Kingdom
Prior art keywords
telephone circuits
telephone
circuits
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 - Fee Related
Application number
GB8827672A
Other versions
GB2225517A (en
GB8827672D0 (en
Inventor
Michael John Gay
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Priority to GB8827672A priority Critical patent/GB2225517B/en
Publication of GB8827672D0 publication Critical patent/GB8827672D0/en
Priority to EP89913150A priority patent/EP0396727A1/en
Priority to KR1019900701593A priority patent/KR900702698A/en
Priority to PCT/EP1989/001422 priority patent/WO1990006649A1/en
Priority to JP2500043A priority patent/JPH02503739A/en
Publication of GB2225517A publication Critical patent/GB2225517A/en
Application granted granted Critical
Publication of GB2225517B publication Critical patent/GB2225517B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
GB8827672A 1988-11-26 1988-11-26 Telephone circuits Expired - Fee Related GB2225517B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB8827672A GB2225517B (en) 1988-11-26 1988-11-26 Telephone circuits
EP89913150A EP0396727A1 (en) 1988-11-26 1989-11-24 Telephone circuits
KR1019900701593A KR900702698A (en) 1988-11-26 1989-11-24 Telephone circuit
PCT/EP1989/001422 WO1990006649A1 (en) 1988-11-26 1989-11-24 Telephone circuits
JP2500043A JPH02503739A (en) 1988-11-26 1989-11-24 telephone circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8827672A GB2225517B (en) 1988-11-26 1988-11-26 Telephone circuits

Publications (3)

Publication Number Publication Date
GB8827672D0 GB8827672D0 (en) 1988-12-29
GB2225517A GB2225517A (en) 1990-05-30
GB2225517B true GB2225517B (en) 1993-03-31

Family

ID=10647533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8827672A Expired - Fee Related GB2225517B (en) 1988-11-26 1988-11-26 Telephone circuits

Country Status (5)

Country Link
EP (1) EP0396727A1 (en)
JP (1) JPH02503739A (en)
KR (1) KR900702698A (en)
GB (1) GB2225517B (en)
WO (1) WO1990006649A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2606167B2 (en) * 1994-12-07 1997-04-30 日本電気株式会社 Telephone
DE19543666A1 (en) * 1995-11-23 1997-05-28 Sel Alcatel Ag Echo canceller
GB2525947B (en) 2014-10-31 2016-06-22 Imagination Tech Ltd Automatic tuning of a gain controller

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3642994A (en) * 1970-05-25 1972-02-15 Fernando Anton T Therapeutic process using melatonin
US4621356A (en) * 1983-07-18 1986-11-04 Scipione Fred J Communications interface for duplex transmission and reception of data and other signals over telephone lines

Also Published As

Publication number Publication date
EP0396727A1 (en) 1990-11-14
KR900702698A (en) 1990-12-08
GB2225517A (en) 1990-05-30
JPH02503739A (en) 1990-11-01
WO1990006649A1 (en) 1990-06-14
GB8827672D0 (en) 1988-12-29

Similar Documents

Publication Publication Date Title
EP0484051A3 (en) Telephone interface circuit
GB2220822B (en) Telephone
GB2181324B (en) Telephone circuits
GB8817709D0 (en) Electrical circuits
GB2224619B (en) Dialer circuit
EP0323223A3 (en) Telephone interface circuit
GB8514796D0 (en) Telephone circuits
GB2251359B (en) Telephone circuit
GB2214645B (en) Range-selecting circuit
GB2225517B (en) Telephone circuits
EP0340720A3 (en) Interface circuit
GB8610627D0 (en) Telephone circuits
HK63096A (en) Electronic telephone set
AU104396S (en) Telephone set
PL273032A1 (en) Telephone set circuit arrangement
EP0430578A3 (en) Telephone interface circuit
GB2222502B (en) Telephone set
CA61088S (en) Telephone
CA61729S (en) Telephone
GB8811031D0 (en) Telephone
AU103317S (en) Telephone
CA60825S (en) One-piece telephone set
GB8827545D0 (en) Circuits
CA63920S (en) Telephone set
GB2219437B (en) Circuit arrangements

Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19941126