GB1431992A - Testing of communications networks - Google Patents

Testing of communications networks

Info

Publication number
GB1431992A
GB1431992A GB1614273A GB1614273A GB1431992A GB 1431992 A GB1431992 A GB 1431992A GB 1614273 A GB1614273 A GB 1614273A GB 1614273 A GB1614273 A GB 1614273A GB 1431992 A GB1431992 A GB 1431992A
Authority
GB
United Kingdom
Prior art keywords
acknowledgement
april
messages
blocks
central control
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
GB1614273A
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.)
Hasler AG
Nokia Solutions and Networks Schweiz AG
Original Assignee
Hasler AG
Standard Telephon and Radio AG
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 Hasler AG, Standard Telephon and Radio AG filed Critical Hasler AG
Publication of GB1431992A publication Critical patent/GB1431992A/en
Expired legal-status Critical Current

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
    • H04Q11/0407—Selecting arrangements for multiplex systems for time-division multiplexing using a stored programme control

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Telephonic Communication Services (AREA)
  • Exchange Systems With Centralized Control (AREA)

Abstract

1431992 Automatic exchange systems HASLER AG SIEMENS-ALBIS AG and STANDARD TELEPHON UND RADIO AG 4 April 1973 [4 April 1972] 16142/73 Heading H4K In the exchange system of Specification 1,428,459 it is arranged for every highway to include a channel used for controlling one of the system blocks so that error free transmission of messages between the central control and the blocks can be taken as an indication of the operability of the highways. Signalling on the control channels utilizes acknowledgement messages and the return of an acknowledgement indicating an error, or the failure of an acknowledgement to be received by the central control results in a new control path being set up to the particular block.
GB1614273A 1972-04-04 1973-04-04 Testing of communications networks Expired GB1431992A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH485972A CH543207A (en) 1972-04-04 1972-04-04 Method for testing the multiplex lines in a centrally controlled digital telecommunications switching network

Publications (1)

Publication Number Publication Date
GB1431992A true GB1431992A (en) 1976-04-14

Family

ID=4283792

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1614273A Expired GB1431992A (en) 1972-04-04 1973-04-04 Testing of communications networks

Country Status (15)

Country Link
JP (1) JPS5622197B2 (en)
AT (1) AT329644B (en)
AU (1) AU5408673A (en)
BE (1) BE797760A (en)
CH (1) CH543207A (en)
DE (1) DE2316478C3 (en)
ES (1) ES413234A1 (en)
FR (1) FR2179078B1 (en)
GB (1) GB1431992A (en)
IE (1) IE37500B1 (en)
IL (1) IL41859A (en)
IT (1) IT987054B (en)
LU (1) LU67356A1 (en)
NL (1) NL170481B (en)
NO (1) NO139507C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5917574B2 (en) * 1978-02-28 1984-04-21 日本電信電話株式会社 Switching device in transmission network
DE2834938A1 (en) * 1978-08-09 1980-02-21 Siemens Ag INDIRECTLY CONTROLLED SWITCHING SYSTEM, ESPECIALLY TELEPHONE SWITCHING SYSTEM EQUIPPED WITH TIME CHANNEL COUPLERS
DE2834918A1 (en) * 1978-08-09 1980-02-21 Siemens Ag INDIRECTLY CONTROLLED SWITCHING SYSTEM, ESPECIALLY TELEPHONE SWITCHING SYSTEM EQUIPPED WITH TIME CHANNEL COUPLERS
DE2834916A1 (en) * 1978-08-09 1980-02-21 Siemens Ag INDIRECTLY CONTROLLED SWITCHING SYSTEM, ESPECIALLY TELEPHONE SWITCHING SYSTEM EQUIPPED WITH TIME CHANNEL COUPLERS
JPS59184296U (en) * 1983-05-26 1984-12-07 畑中　晴男 Small vessel with landing casters

Also Published As

Publication number Publication date
IE37500B1 (en) 1977-08-03
CH543207A (en) 1973-10-15
DE2316478A1 (en) 1973-10-25
FR2179078B1 (en) 1978-06-02
IL41859A0 (en) 1973-05-31
FR2179078A1 (en) 1973-11-16
DE2316478B2 (en) 1981-04-02
NO139507B (en) 1978-12-11
NL7304693A (en) 1973-10-08
AT329644B (en) 1976-05-25
ATA247173A (en) 1975-08-15
ES413234A1 (en) 1976-01-01
IE37500L (en) 1973-10-04
NO139507C (en) 1979-03-21
NL170481B (en) 1982-06-01
IL41859A (en) 1975-11-25
DE2316478C3 (en) 1982-02-18
LU67356A1 (en) 1973-07-13
IT987054B (en) 1975-02-20
AU5408673A (en) 1974-10-10
JPS4917615A (en) 1974-02-16
JPS5622197B2 (en) 1981-05-23
BE797760A (en) 1973-10-04

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee