GB9001058D0 - Sound-signal device - Google Patents

Sound-signal device

Info

Publication number
GB9001058D0
GB9001058D0 GB909001058A GB9001058A GB9001058D0 GB 9001058 D0 GB9001058 D0 GB 9001058D0 GB 909001058 A GB909001058 A GB 909001058A GB 9001058 A GB9001058 A GB 9001058A GB 9001058 D0 GB9001058 D0 GB 9001058D0
Authority
GB
United Kingdom
Prior art keywords
sound
signal device
signal
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.)
Withdrawn
Application number
GB909001058A
Other versions
GB2240239A (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.)
CARL MIKAEL BELLMAN AB
Original Assignee
CARL MIKAEL BELLMAN AB
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 CARL MIKAEL BELLMAN AB filed Critical CARL MIKAEL BELLMAN AB
Priority to GB9001058A priority Critical patent/GB2240239A/en
Publication of GB9001058D0 publication Critical patent/GB9001058D0/en
Publication of GB2240239A publication Critical patent/GB2240239A/en
Withdrawn legal-status Critical Current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
    • H04M1/247—Telephone sets including user guidance or feature selection means facilitating their use
    • H04M1/2474—Telephone terminals specially adapted for disabled people
    • H04M1/2475—Telephone terminals specially adapted for disabled people for a hearing impaired user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Otolaryngology (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Human Computer Interaction (AREA)
  • Telephone Function (AREA)
GB9001058A 1990-01-17 1990-01-17 Sound-signal device Withdrawn GB2240239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9001058A GB2240239A (en) 1990-01-17 1990-01-17 Sound-signal device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9001058A GB2240239A (en) 1990-01-17 1990-01-17 Sound-signal device

Publications (2)

Publication Number Publication Date
GB9001058D0 true GB9001058D0 (en) 1990-03-14
GB2240239A GB2240239A (en) 1991-07-24

Family

ID=10669446

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9001058A Withdrawn GB2240239A (en) 1990-01-17 1990-01-17 Sound-signal device

Country Status (1)

Country Link
GB (1) GB2240239A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4126352A1 (en) * 1991-08-09 1993-02-18 Telefonbau & Normalzeit Gmbh Volume adjusting circuit for ringing transducer of telephone - connects different outputs of controller to earth via different resistances depending on position of push button indicating desired volume
DE4239943A1 (en) * 1992-11-27 1994-06-01 Ludwig Fes Telephone for people hard of hearing - has externally powered amplifier for speech signal and frequency controllable bell
US7750598B2 (en) 2006-10-05 2010-07-06 Eveready Battery Company, Inc. Battery charger user interface

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1059606A (en) * 1964-08-25 1967-02-22 Sits Soc It Telecom Siemens A ringer
US4359610A (en) * 1978-12-29 1982-11-16 Chang Pan W Telephone ringing circuit
GB2163320B (en) * 1984-08-14 1988-01-27 Stc Plc Telephone circuit

Also Published As

Publication number Publication date
GB2240239A (en) 1991-07-24

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)