GB850784A - Improvements in and relating to radio signalling systems - Google Patents

Improvements in and relating to radio signalling systems

Info

Publication number
GB850784A
GB850784A GB2059458A GB2059458A GB850784A GB 850784 A GB850784 A GB 850784A GB 2059458 A GB2059458 A GB 2059458A GB 2059458 A GB2059458 A GB 2059458A GB 850784 A GB850784 A GB 850784A
Authority
GB
United Kingdom
Prior art keywords
subscriber
subscribers
channels
tones
radio
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
GB2059458A
Inventor
Herbert Cyril Spencer
John Anthony Scowcroft
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
British Telecommunications PLC
British Telecommunications Research Ltd
Original Assignee
Automatic Telephone and Electric Co Ltd
British Telecommunications PLC
British Telecommunications Research 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, British Telecommunications PLC, British Telecommunications Research Ltd filed Critical Automatic Telephone and Electric Co Ltd
Priority to GB2059458A priority Critical patent/GB850784A/en
Publication of GB850784A publication Critical patent/GB850784A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

850,784. Radio signalling. BRITISH TELECOMMUNICATIONS RESEARCH Ltd, and AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. June 26, 1959 [June 26, 1958], No. 20594/58. Drawings to Specification. Class 40(5). The system for enabling radio telephone communication to be effected between a telephone exchange and any one of a plurality of subscriber-stations, wherein each subscriberstation includes means for cyclically scanning a plurality of radio channels, the number of channels being less than the number of subscriber-stations, and means responsive to the reception of its calling signal in any one of the channels to arrest the cyclic scanning in that channel, described in Specification 850,698, is modified to allow two subscribers' instruments to be served by one subscriber-station on a twoparty sharing basis. The calling signal for each of the two subscribers consists of a group of three tones one of the three tones being of a different frequency from the corresponding tone in the other group and the remaining tones being of the same frequency. Additional relays are provided at the exchange and at the subscriberstation whereby an engaged condition is established for one of the sharing subscribers when the other subscriber is being called or is calling.
GB2059458A 1958-06-26 1958-06-26 Improvements in and relating to radio signalling systems Expired GB850784A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2059458A GB850784A (en) 1958-06-26 1958-06-26 Improvements in and relating to radio signalling systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2059458A GB850784A (en) 1958-06-26 1958-06-26 Improvements in and relating to radio signalling systems

Publications (1)

Publication Number Publication Date
GB850784A true GB850784A (en) 1960-10-05

Family

ID=10148506

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2059458A Expired GB850784A (en) 1958-06-26 1958-06-26 Improvements in and relating to radio signalling systems

Country Status (1)

Country Link
GB (1) GB850784A (en)

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