TW456137B - Telephone line interface circuit without hookswitch - Google Patents

Telephone line interface circuit without hookswitch Download PDF

Info

Publication number
TW456137B
TW456137B TW88122093A TW88122093A TW456137B TW 456137 B TW456137 B TW 456137B TW 88122093 A TW88122093 A TW 88122093A TW 88122093 A TW88122093 A TW 88122093A TW 456137 B TW456137 B TW 456137B
Authority
TW
Taiwan
Prior art keywords
transistor
telephone line
current
telephone
patent application
Prior art date
Application number
TW88122093A
Other languages
English (en)
Chinese (zh)
Inventor
Raphael Rahamim
Frank Sacca
Original Assignee
Conexant Systems 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 Conexant Systems Inc filed Critical Conexant Systems Inc
Application granted granted Critical
Publication of TW456137B publication Critical patent/TW456137B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/82—Line monitoring circuits for call progress or status discrimination

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Telephonic Communication Services (AREA)
TW88122093A 1998-12-16 1999-12-18 Telephone line interface circuit without hookswitch TW456137B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21270798A 1998-12-16 1998-12-16

Publications (1)

Publication Number Publication Date
TW456137B true TW456137B (en) 2001-09-21

Family

ID=22792128

Family Applications (1)

Application Number Title Priority Date Filing Date
TW88122093A TW456137B (en) 1998-12-16 1999-12-18 Telephone line interface circuit without hookswitch

Country Status (4)

Country Link
EP (1) EP1142292A1 (fr)
CN (1) CN1330830A (fr)
TW (1) TW456137B (fr)
WO (1) WO2000036813A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465903A (en) * 1983-04-21 1984-08-14 Ixo, Inc. Electronic telephone interface circuit
US4723267A (en) * 1985-06-17 1988-02-02 Octocom Systems, Inc. Telephone line interface and dialer circuitry for telecommunications equipment
EP0233892B1 (fr) * 1985-07-18 1994-02-16 Alcatel N.V. Commutateur de lignes telephoniques
GB2193414B (en) * 1986-07-14 1990-01-04 Siliconix Ltd Telephone instrument
IT1254796B (it) * 1992-02-17 1995-10-11 St Microelectronics Srl Dispositivo di limitazione della tensione operativa per interruttori meccanici in telefonia.
WO1996005686A1 (fr) * 1994-08-10 1996-02-22 Cp Clare Corporation Commutateur bilateral pour modem
EP0876724B1 (fr) * 1995-12-22 2003-06-11 Thomson Consumer Electronics, Inc. Circuit d'interface de prise de ligne pour telephone

Also Published As

Publication number Publication date
WO2000036813A1 (fr) 2000-06-22
CN1330830A (zh) 2002-01-09
EP1142292A1 (fr) 2001-10-10

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Legal Events

Date Code Title Description
GD4A Issue of patent certificate for granted invention patent
MM4A Annulment or lapse of patent due to non-payment of fees