GB325280A - Improvements in or relating to toll switching trunk circuits for telephone exchange systems - Google Patents

Improvements in or relating to toll switching trunk circuits for telephone exchange systems

Info

Publication number
GB325280A
GB325280A GB3364428A GB3364428A GB325280A GB 325280 A GB325280 A GB 325280A GB 3364428 A GB3364428 A GB 3364428A GB 3364428 A GB3364428 A GB 3364428A GB 325280 A GB325280 A GB 325280A
Authority
GB
United Kingdom
Prior art keywords
circuit
relay
over
operator
junction
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
GB3364428A
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.)
Individual
Original Assignee
Individual
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
Priority to NL28009D priority Critical patent/NL28009C/xx
Application filed by Individual filed Critical Individual
Priority to GB3364428A priority patent/GB325280A/en
Publication of GB325280A publication Critical patent/GB325280A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/50—Centralised arrangements for answering calls; Centralised arrangements for recording messages for absent or busy subscribers ; Centralised arrangements for recording messages
    • H04M3/51—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing
    • H04M3/523—Centralised call answering arrangements requiring operator intervention, e.g. call or contact centers for telemarketing with call distribution or queueing

Landscapes

  • Business, Economics & Management (AREA)
  • Marketing (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
GB3364428A 1928-11-16 1928-11-16 Improvements in or relating to toll switching trunk circuits for telephone exchange systems Expired GB325280A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL28009D NL28009C (enrdf_load_stackoverflow) 1928-11-16
GB3364428A GB325280A (en) 1928-11-16 1928-11-16 Improvements in or relating to toll switching trunk circuits for telephone exchange systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3364428A GB325280A (en) 1928-11-16 1928-11-16 Improvements in or relating to toll switching trunk circuits for telephone exchange systems

Publications (1)

Publication Number Publication Date
GB325280A true GB325280A (en) 1930-02-17

Family

ID=10355580

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3364428A Expired GB325280A (en) 1928-11-16 1928-11-16 Improvements in or relating to toll switching trunk circuits for telephone exchange systems

Country Status (2)

Country Link
GB (1) GB325280A (enrdf_load_stackoverflow)
NL (1) NL28009C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
NL28009C (enrdf_load_stackoverflow)

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