GB191212547A - Telephone Exchange Systems. - Google Patents

Telephone Exchange Systems.

Info

Publication number
GB191212547A
GB191212547A GB191212547DA GB191212547A GB 191212547 A GB191212547 A GB 191212547A GB 191212547D A GB191212547D A GB 191212547DA GB 191212547 A GB191212547 A GB 191212547A
Authority
GB
United Kingdom
Prior art keywords
magnet
circuit
plug
operator
over
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
Other languages
English (en)
Inventor
Elmer Reed Corwin
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
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191212547A publication Critical patent/GB191212547A/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)
  • Interface Circuits In Exchanges (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
GB191212547D 1912-05-28 1912-05-28 Telephone Exchange Systems. Expired GB191212547A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191212547T 1912-05-28

Publications (1)

Publication Number Publication Date
GB191212547A true GB191212547A (en) 1913-05-28

Family

ID=32572473

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191212547D Expired GB191212547A (en) 1912-05-28 1912-05-28 Telephone Exchange Systems.

Country Status (3)

Country Link
DE (1) DE282465C (enrdf_load_stackoverflow)
FR (1) FR455620A (enrdf_load_stackoverflow)
GB (1) GB191212547A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE282465C (enrdf_load_stackoverflow)
FR455620A (fr) 1913-08-05

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