GB588564A - Improvements in or relating to telephone systems - Google Patents

Improvements in or relating to telephone systems

Info

Publication number
GB588564A
GB588564A GB16195/44A GB1619544A GB588564A GB 588564 A GB588564 A GB 588564A GB 16195/44 A GB16195/44 A GB 16195/44A GB 1619544 A GB1619544 A GB 1619544A GB 588564 A GB588564 A GB 588564A
Authority
GB
United Kingdom
Prior art keywords
code
wanted
caller
telephone
call
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
GB16195/44A
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.)
Automatic Telephone and Electric Co Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
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 Automatic Telephone and Electric Co Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB16195/44A priority Critical patent/GB588564A/en
Priority to US607473A priority patent/US2491903A/en
Publication of GB588564A publication Critical patent/GB588564A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/02—Telephonic communication systems specially adapted for combination with other electrical systems with bell or annunciator systems
    • H04M11/022—Paging systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Meter Arrangements (AREA)
  • Alarm Systems (AREA)

Abstract

588,564. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and PEARCE, O. A. Aug. 25, 1944, No. 16195. Drawings to Specification. [Class 40 (iv)] In an automatic exchange having code call facilities, a wanted subscriber is dialled and, if he is not present at the telephone location the caller dials an additional digit which takes into use a code call link in which a finder searches for the wanted number and, having found it, emits code signals appropriate to the wanted number. The code call link has another finder which searches for the caller and then releases the link through which the call was originally set up. The wanted party dials a code number from any telephone, to put him in communication with the caller. The circuits are identical with certain of those described in Specification 588,563, the claims being limited however, to the code call feature.
GB16195/44A 1944-08-25 1944-08-25 Improvements in or relating to telephone systems Expired GB588564A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB16195/44A GB588564A (en) 1944-08-25 1944-08-25 Improvements in or relating to telephone systems
US607473A US2491903A (en) 1944-08-25 1945-07-27 Telephone system having code call facilities

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16195/44A GB588564A (en) 1944-08-25 1944-08-25 Improvements in or relating to telephone systems

Publications (1)

Publication Number Publication Date
GB588564A true GB588564A (en) 1947-05-28

Family

ID=10072894

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16195/44A Expired GB588564A (en) 1944-08-25 1944-08-25 Improvements in or relating to telephone systems

Country Status (2)

Country Link
US (1) US2491903A (en)
GB (1) GB588564A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2740842A (en) * 1952-02-12 1956-04-03 Commercial Radio Sound Corp Audible and visual two-way communication and annunciation system for hospitals and the like
US2880277A (en) * 1955-08-15 1959-03-31 Gen Dynamics Corp Code call circuits
US2848550A (en) * 1956-02-03 1958-08-19 Gen Dynamics Corp Code call circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1504215A (en) * 1919-06-05 1924-08-12 Western Electric Co Telephone-exchange system
US1594610A (en) * 1922-11-06 1926-08-03 Automatic Electric Inc Automatic telephone system
GB498520A (en) * 1936-06-09 1939-01-09 Carl Lehner Improvements in and relating to telephone installations
US2324341A (en) * 1941-08-30 1943-07-13 Western Electric Co Telephone system

Also Published As

Publication number Publication date
US2491903A (en) 1949-12-20

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