GB1363011A - Telephone exchange subscribers line scanner - Google Patents

Telephone exchange subscribers line scanner

Info

Publication number
GB1363011A
GB1363011A GB503172A GB503172A GB1363011A GB 1363011 A GB1363011 A GB 1363011A GB 503172 A GB503172 A GB 503172A GB 503172 A GB503172 A GB 503172A GB 1363011 A GB1363011 A GB 1363011A
Authority
GB
United Kingdom
Prior art keywords
line
parked
scan
lines
calling
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
GB503172A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1363011A publication Critical patent/GB1363011A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/42—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker
    • H04Q3/54—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised
    • H04Q3/545—Circuit arrangements for indirect selecting controlled by common circuits, e.g. register controller, marker in which the logic circuitry controlling the exchange is centralised using a stored programme
    • H04Q3/54575—Software application
    • H04Q3/54591—Supervision, e.g. fault localisation, traffic measurements, avoiding errors, failure recovery, monitoring, statistical analysis

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
GB503172A 1971-02-09 1972-02-03 Telephone exchange subscribers line scanner Expired GB1363011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7104237A FR2126509A5 (es) 1971-02-09 1971-02-09

Publications (1)

Publication Number Publication Date
GB1363011A true GB1363011A (en) 1974-08-14

Family

ID=9071578

Family Applications (1)

Application Number Title Priority Date Filing Date
GB503172A Expired GB1363011A (en) 1971-02-09 1972-02-03 Telephone exchange subscribers line scanner

Country Status (10)

Country Link
AU (1) AU465440B2 (es)
BE (1) BE779111A (es)
BR (1) BR7200721D0 (es)
CA (1) CA983150A (es)
CH (1) CH552918A (es)
DE (1) DE2205639C3 (es)
ES (1) ES399611A1 (es)
FR (1) FR2126509A5 (es)
GB (1) GB1363011A (es)
IT (1) IT947251B (es)

Also Published As

Publication number Publication date
FR2126509A5 (es) 1972-10-06
DE2205639A1 (de) 1972-08-31
CH552918A (fr) 1974-08-15
BE779111A (fr) 1972-08-09
DE2205639B2 (de) 1978-06-15
IT947251B (it) 1973-05-21
DE2205639C3 (de) 1979-02-15
BR7200721D0 (pt) 1973-06-28
AU465440B2 (en) 1975-09-25
AU3878872A (en) 1973-08-16
ES399611A1 (es) 1975-06-01
CA983150A (en) 1976-02-03

Similar Documents

Publication Publication Date Title
US3963874A (en) Busy-test arrangement for electronic private automatic branch exchange
GB1081815A (en) System for detecting changes in supervisory states of a communication system
GB1446609A (en) Time division multiplexed digital switching apparatus
US4071699A (en) Apparatus providing for the remote display of calling numbers in a telephone system
US3271521A (en) Circuit arrangement for ascertaining operating conditions of subscriber stations of a time multiplex communication system
GB1406856A (en) Switching arrangement for controlling peripheral units in a time division multiplex common control system
US3952172A (en) Telephone call simulator
GB1175846A (en) Telephone Switching Networks
US3118131A (en) Data processing equipment
GB1185731A (en) Improvements in or relating to Signal Transfer Systems
GB1363011A (en) Telephone exchange subscribers line scanner
GB1455799A (en) Telecommunication system using tdm switching
US3904831A (en) Tone control arrangement for electronic PABX
GB1026416A (en) Improvements in or relating to telecommunication systems
US3033932A (en) Selective ringing multi-party telephone system
US3521001A (en) Malicious call holding and tracing circuit
GB1471364A (en) Electronic telephone system
US2635147A (en) Telephone selector switch utilizing odd-even relay
US3479466A (en) Communication system with control signal delay means
US3903374A (en) Control system for electronic PABX switching matrix
US3171898A (en) Telephone systems
US2285985A (en) Step-by-step operated crossbar switch
US3096403A (en) Scanning control circuit
GB1179352A (en) Time Division Automatic Telephone Switching Equipment
GB1178441A (en) Improvements in or relating to Communication Switching Systems.

Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee