HK1001450A1 - Telephone system with handsfree equipment - Google Patents

Telephone system with handsfree equipment

Info

Publication number
HK1001450A1
HK1001450A1 HK98100303A HK98100303A HK1001450A1 HK 1001450 A1 HK1001450 A1 HK 1001450A1 HK 98100303 A HK98100303 A HK 98100303A HK 98100303 A HK98100303 A HK 98100303A HK 1001450 A1 HK1001450 A1 HK 1001450A1
Authority
HK
Hong Kong
Prior art keywords
telephone system
handsfree equipment
handsfree
equipment
telephone
Prior art date
Application number
HK98100303A
Inventor
Osamu Sato
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 HK1001450A1 publication Critical patent/HK1001450A1/en

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)
HK98100303A 1996-01-29 1998-01-15 Telephone system with handsfree equipment HK1001450A1 (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 (1)

Publication Number Publication Date
HK1001450A1 true HK1001450A1 (en) 1998-06-19

Family

ID=11826914

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98100303A HK1001450A1 (en) 1996-01-29 1998-01-15 Telephone 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
GB9701836D0 (en) 1997-03-19
GB2309851B (en) 1998-04-08
JPH09205480A (en) 1997-08-05
GB2309851A (en) 1997-08-06
AU709742B2 (en) 1999-09-02
AU1238297A (en) 1997-08-07

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20040129

PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)