GB1329955A - Subscriver terminal-multiplex telecommunications systems - Google Patents

Subscriver terminal-multiplex telecommunications systems

Info

Publication number
GB1329955A
GB1329955A GB3570471A GB3570471A GB1329955A GB 1329955 A GB1329955 A GB 1329955A GB 3570471 A GB3570471 A GB 3570471A GB 3570471 A GB3570471 A GB 3570471A GB 1329955 A GB1329955 A GB 1329955A
Authority
GB
United Kingdom
Prior art keywords
subscriber
voltage
circuit
exchange
relay
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
Application number
GB3570471A
Other languages
English (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.)
Siemens Corp
Original Assignee
Siemens 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 Siemens Corp filed Critical Siemens Corp
Publication of GB1329955A publication Critical patent/GB1329955A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/38—Signalling arrangements; Manipulation of signalling currents using combinations of direct currents of different amplitudes or polarities over line conductors or combination of line conductors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage
    • G01R19/155—Indicating the presence of voltage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/22—Arrangements for supervision, monitoring or testing
    • H04M3/26—Arrangements for supervision, monitoring or testing with means for applying test signals or for measuring
    • H04M3/28—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor
    • H04M3/30—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop
    • H04M3/302—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs
    • H04M3/303—Automatic routine testing ; Fault testing; Installation testing; Test methods, test equipment or test arrangements therefor for subscriber's lines, for the local loop using modulation techniques for copper pairs and using PCM multiplexers, e.g. pair gain systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/02—Selecting arrangements for multiplex systems for frequency-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q5/00—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange
    • H04Q5/24—Selecting arrangements wherein two or more subscriber stations are connected by the same line to the exchange for two-party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Devices For Supply Of Signal Current (AREA)
GB3570471A 1970-07-31 1971-07-29 Subscriver terminal-multiplex telecommunications systems Expired GB1329955A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702038218 DE2038218B2 (de) 1970-07-31 1970-07-31 Einrichtung zur teilnehmeranschluss funktionskontrolle pruefung und messung bei einer teilnehmeranschluss multiplex anordnung

Publications (1)

Publication Number Publication Date
GB1329955A true GB1329955A (en) 1973-09-12

Family

ID=5778575

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3570471A Expired GB1329955A (en) 1970-07-31 1971-07-29 Subscriver terminal-multiplex telecommunications systems

Country Status (7)

Country Link
JP (1) JPS5141488B1 (https=)
BE (1) BE770678A (https=)
CH (1) CH535519A (https=)
DE (1) DE2038218B2 (https=)
GB (1) GB1329955A (https=)
NL (2) NL150295B (https=)
SE (1) SE380156B (https=)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215670A1 (de) * 1982-04-27 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Teilnehmeranschlussschaltung mit pruefanschluessen
DE3215680A1 (de) * 1982-04-27 1983-10-27 Siemens AG, 1000 Berlin und 8000 München Verfahren zur pruefung einer teilnehmeranschlussschaltung sowie der daran angeschlossenen analogteilnehmerstation und teilnehmeranschlussleitung und schaltungsanordnung zur durchfuehrung des verfahrens
DE3633057C2 (de) * 1986-09-29 1994-01-20 Kommunikations Elektronik Schaltungsanordnung zur Übertragung nachrichtentechnischer Signale

Also Published As

Publication number Publication date
NL7601193A (nl) 1976-05-31
DE2038218B2 (de) 1972-03-09
CH535519A (de) 1973-03-31
NL7110582A (https=) 1972-02-02
DE2038218A1 (https=) 1972-03-09
BE770678A (fr) 1971-12-01
NL150295B (nl) 1976-07-15
SE380156B (https=) 1975-10-27
JPS5141488B1 (https=) 1976-11-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees