GB2309851B - Telehone system with handsfree equipment - Google Patents

Telehone system with handsfree equipment

Info

Publication number
GB2309851B
GB2309851B GB9701836A GB9701836A GB2309851B GB 2309851 B GB2309851 B GB 2309851B GB 9701836 A GB9701836 A GB 9701836A GB 9701836 A GB9701836 A GB 9701836A GB 2309851 B GB2309851 B GB 2309851B
Authority
GB
United Kingdom
Prior art keywords
telehone
handsfree equipment
handsfree
equipment
telehone system
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
GB9701836A
Other versions
GB2309851A (en
GB9701836D0 (en
Inventor
Osamu Sato
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of GB9701836D0 publication Critical patent/GB9701836D0/en
Publication of GB2309851A publication Critical patent/GB2309851A/en
Application granted granted Critical
Publication of GB2309851B publication Critical patent/GB2309851B/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
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H04M1/6075—Portable telephones adapted for handsfree use adapted for handsfree use in a vehicle
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/026—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse time characteristics modulation, e.g. width, position, interval
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3827—Portable transceivers
    • H04B1/3877—Arrangements for enabling portable transceivers to be used in a fixed position, e.g. cradles or boosters

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Telephone Function (AREA)
  • Telephonic Communication Services (AREA)
GB9701836A 1996-01-29 1997-01-29 Telehone system with handsfree equipment Expired - Fee Related GB2309851B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1321496A JPH09205480A (en) 1996-01-29 1996-01-29 Connection system for portable telephone and hand-free equipment

Publications (3)

Publication Number Publication Date
GB9701836D0 GB9701836D0 (en) 1997-03-19
GB2309851A GB2309851A (en) 1997-08-06
GB2309851B true GB2309851B (en) 1998-04-08

Family

ID=11826914

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9701836A Expired - Fee Related GB2309851B (en) 1996-01-29 1997-01-29 Telehone system with handsfree equipment

Country Status (4)

Country Link
JP (1) JPH09205480A (en)
AU (1) AU709742B2 (en)
GB (1) GB2309851B (en)
HK (1) HK1001450A1 (en)

Also Published As

Publication number Publication date
JPH09205480A (en) 1997-08-05
GB2309851A (en) 1997-08-06
AU1238297A (en) 1997-08-07
GB9701836D0 (en) 1997-03-19
HK1001450A1 (en) 1998-06-19
AU709742B2 (en) 1999-09-02

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Legal Events

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

Effective date: 20020129