GB528525A - Improvements in or relating to printing telegraph exchange systems - Google Patents

Improvements in or relating to printing telegraph exchange systems

Info

Publication number
GB528525A
GB528525A GB13492/39A GB1349239A GB528525A GB 528525 A GB528525 A GB 528525A GB 13492/39 A GB13492/39 A GB 13492/39A GB 1349239 A GB1349239 A GB 1349239A GB 528525 A GB528525 A GB 528525A
Authority
GB
United Kingdom
Prior art keywords
station
operator
call
contacts
exchange systems
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
GB13492/39A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB528525A publication Critical patent/GB528525A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/06—Answer-back mechanisms or circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
GB13492/39A 1938-05-20 1939-05-05 Improvements in or relating to printing telegraph exchange systems Expired GB528525A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL528525X 1938-05-20

Publications (1)

Publication Number Publication Date
GB528525A true GB528525A (en) 1940-10-31

Family

ID=19787102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13492/39A Expired GB528525A (en) 1938-05-20 1939-05-05 Improvements in or relating to printing telegraph exchange systems

Country Status (4)

Country Link
BE (1) BE434230A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE765799C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR854342A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB528525A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE599440C (de) * 1930-10-25 1934-07-03 Siemens & Halske Akt Ges Schaltungsanordnung fuer handbediente Telegraphenvermittlungsstellen, bei denen zum Abfragen und Mitlesen (bzw. Mitschreiben) derselbe Apparat verwendet wird
DE596963C (de) * 1931-10-13 1934-05-14 Siemens & Halske Akt Ges Schaltungsanordnung fuer handbediente Telegraphenvermittlungsanlagen mit beiderseitiger Schlusszeichengabe, bei denen das Schlusszeichen durch eine den Telegraphierimpulsen gleichartige Stromaenderung im Telegraphierstromkreis uebertragen wird

Also Published As

Publication number Publication date
BE434230A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1939-08-31
DE765799C (de) 1953-05-11
FR854342A (fr) 1940-04-11

Similar Documents

Publication Publication Date Title
US3335226A (en) Combined telephone and data switching system
GB694092A (en) Electrical switching system
US3336444A (en) Selective call system
US3651274A (en) Selective signaling system
US1831385A (en) Telephone system
US3691308A (en) Multiline selective signaling system
GB528525A (en) Improvements in or relating to printing telegraph exchange systems
GB1122924A (en) Circuit arrangement for a centrally controlled exchange, serving in common a telephone and a teleprinting network
US2916555A (en) Restricted service telephone system
US2528101A (en) Telephone system
US2400148A (en) Telephone call transmitting device
SA521422067B1 (ar) واجهة وترخيص للاتصالات عبر الشبكة
RU18036U1 (ru) Система засекреченной связи
US3089000A (en) Intercommunicating telephone systems
US3229040A (en) Telephone exchange systems
US1919317A (en) Telephone system
US2773126A (en) Automatic telephone system provided with party lines and trunk lines
US3869578A (en) Communications processor system having a time shared communications control device and modem
US2770670A (en) Carrier telegraph switchboard supervisory system
US1449644A (en) Telephone system
US2290986A (en) Key-set circuit
GB1369669A (en) Line circuits for communication systems
US2917585A (en) Revertive call-selector circuit
US2897355A (en) Diode coincidence gate
GB608856A (en) Rectifier arrangement