ZA807678B - Subscriber's line interface - Google Patents

Subscriber's line interface

Info

Publication number
ZA807678B
ZA807678B ZA00807678A ZA807678A ZA807678B ZA 807678 B ZA807678 B ZA 807678B ZA 00807678 A ZA00807678 A ZA 00807678A ZA 807678 A ZA807678 A ZA 807678A ZA 807678 B ZA807678 B ZA 807678B
Authority
ZA
South Africa
Prior art keywords
subscriber
line interface
interface
line
Prior art date
Application number
ZA00807678A
Other languages
English (en)
Inventor
A Sweet
Original Assignee
Standard Telephones Cables Ltd
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 Standard Telephones Cables Ltd filed Critical Standard Telephones Cables Ltd
Publication of ZA807678B publication Critical patent/ZA807678B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/04—Selecting arrangements for multiplex systems for time-division multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
ZA00807678A 1979-12-13 1980-12-08 Subscriber's line interface ZA807678B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7943074A GB2066023B (en) 1979-12-13 1979-12-13 Telephone line interface

Publications (1)

Publication Number Publication Date
ZA807678B true ZA807678B (en) 1981-12-30

Family

ID=10509838

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00807678A ZA807678B (en) 1979-12-13 1980-12-08 Subscriber's line interface

Country Status (15)

Country Link
US (1) US4345115A (xx)
JP (1) JPS56111394A (xx)
AU (1) AU541812B2 (xx)
BE (1) BE890404R (xx)
CH (1) CH651986A5 (xx)
DE (1) DE3043906A1 (xx)
EG (1) EG13942A (xx)
FR (1) FR2472320A1 (xx)
GB (1) GB2066023B (xx)
IE (1) IE50882B1 (xx)
IT (1) IT1134726B (xx)
NL (1) NL8006665A (xx)
NZ (1) NZ195660A (xx)
SE (1) SE8008587L (xx)
ZA (1) ZA807678B (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410982A (en) * 1981-05-07 1983-10-18 Gte Automatic Electric Labs. Inc. Arrangement for extending digital signaling to telephone subscribers' substations
DE3221387A1 (de) * 1982-06-05 1983-12-08 Krone Gmbh, 1000 Berlin Digitales fernsprechendgeraet mit anschluessen fuer analoge zusatzgeraete
US4592046A (en) * 1983-03-13 1986-05-27 Iwasaki Tsushinki Kabushiki Kaisha Subscriber's circuit for time division switching system
JPS63283351A (ja) * 1987-05-15 1988-11-21 Canon Inc Ｉｓｄｎタ−ミナルアダプタ
US5241564A (en) * 1989-08-30 1993-08-31 Digital Equipment Corporation Low noise, high performance data bus system and method
AT406534B (de) * 1996-07-03 2000-06-26 Ericsson Austria Ag Schaltungsanordnung zur detektion von analogen vermittlungs- und prüfsignalen
US6169801B1 (en) 1998-03-16 2001-01-02 Midcom, Inc. Digital isolation apparatus and method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377132A1 (fr) * 1977-01-11 1978-08-04 Labo Cent Telecommunicat Dispositif de protection pour joncteur electronique
NL7700719A (nl) * 1977-01-25 1978-07-27 Philips Nv Storingsongevoelig lijnsupervisiecircuit.
US4087646A (en) * 1977-01-28 1978-05-02 Bell Telephone Laboratories, Incorporated Dual mode telephone subscriber loop current detector
GB1583635A (en) * 1977-03-02 1981-01-28 Int Standard Electric Corp Subscriber line or trunk circuit
JPS5469906A (en) * 1977-11-15 1979-06-05 Nippon Telegr & Teleph Corp <Ntt> Analog-to-digital converter circuit
JPS54157407A (en) * 1978-06-02 1979-12-12 Hitachi Ltd Level control unit for time-division exchange
US4268723A (en) * 1979-09-04 1981-05-19 Western Electric Company Circuits and methods for initializing the loop current of a telephone set
GB2064915B (en) * 1979-11-29 1984-03-21 Standard Telephones Cables Ltd Telephone line feed circuit

Also Published As

Publication number Publication date
EG13942A (en) 1983-03-31
AU6514980A (en) 1981-06-18
SE8008587L (sv) 1981-06-14
IE50882B1 (en) 1986-08-06
IE802601L (en) 1981-06-13
DE3043906A1 (de) 1981-10-29
GB2066023B (en) 1983-11-09
IT8026650A0 (it) 1980-12-15
IT1134726B (it) 1986-08-13
NL8006665A (nl) 1981-07-16
AU541812B2 (en) 1985-01-24
BE890404R (fr) 1982-01-18
NZ195660A (en) 1984-03-30
US4345115A (en) 1982-08-17
GB2066023A (en) 1981-07-01
CH651986A5 (de) 1985-10-15
JPS56111394A (en) 1981-09-03
FR2472320A1 (fr) 1981-06-26

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