[go: up one dir, main page]

GB1270558A - Mobile selective calling systems - Google Patents

Mobile selective calling systems

Info

Publication number
GB1270558A
GB1270558A GB3473969A GB3473969A GB1270558A GB 1270558 A GB1270558 A GB 1270558A GB 3473969 A GB3473969 A GB 3473969A GB 3473969 A GB3473969 A GB 3473969A GB 1270558 A GB1270558 A GB 1270558A
Authority
GB
United Kingdom
Prior art keywords
frequencies
mobile
tones
sequence
mobiles
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
GB3473969A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1270558A publication Critical patent/GB1270558A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/022—Selective call receivers
    • H04W88/025—Selective call decoders
    • H04W88/028—Selective call decoders using pulse address codes

Landscapes

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

Abstract

1,270,558. Telephone exchanges. INTERNATIONAL STANDARD ELECTRIC CORP. 10 July, 1969 [12 July, 1968], No. 34739/69. Heading H4K and H4L. A radio telephone system in which mobile stations are called using sequences of frequencies or tones, employs at least three frequencies or tones on a single channel to designate the numbers of wanted mobiles, each mobile being designated by a sequence employing two frequencies or tones only. As described the base station which is connected to a wired exchange uses a single calling channel and ten modulation frequencies. The code for each mobile comprises two modulation frequencies transmitted in a characteristic sequence i.e. in start-stop form. Each mobile need only be able to detect those modulation frequencies by which it is designated and to recognize its characteristic sequence. The mobiles are arranged to transmit this sequence to answer or originate a call.
GB3473969A 1968-07-12 1969-07-10 Mobile selective calling systems Expired GB1270558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR159037 1968-07-12

Publications (1)

Publication Number Publication Date
GB1270558A true GB1270558A (en) 1972-04-12

Family

ID=8652499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3473969A Expired GB1270558A (en) 1968-07-12 1969-07-10 Mobile selective calling systems

Country Status (5)

Country Link
CH (1) CH496384A (en)
DE (1) DE1934633A1 (en)
ES (1) ES369425A1 (en)
FR (1) FR1587641A (en)
GB (1) GB1270558A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118393A (en) * 1982-04-05 1983-10-26 Mitsubishi Electric Corp Frequency determining apparatus
GB2122000A (en) * 1982-06-04 1984-01-04 Rexdale Wells Limited Apparatus for use in two way radio systems
GB2217490A (en) * 1986-10-20 1989-10-25 Tateco Ab A method of transferring information in a paging system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118393A (en) * 1982-04-05 1983-10-26 Mitsubishi Electric Corp Frequency determining apparatus
GB2122000A (en) * 1982-06-04 1984-01-04 Rexdale Wells Limited Apparatus for use in two way radio systems
GB2217490A (en) * 1986-10-20 1989-10-25 Tateco Ab A method of transferring information in a paging system

Also Published As

Publication number Publication date
CH496384A (en) 1970-09-15
DE1934633A1 (en) 1970-01-15
FR1587641A (en) 1970-03-27
ES369425A1 (en) 1971-06-01

Similar Documents

Publication Publication Date Title
ATE77191T1 (en) DIGITAL RADIO TRANSMISSION PROCESS.
JPS5313803A (en) Mobile communication system
AU7613574A (en) Subscriber stations for telephone systems
ES407624A1 (en) Telephone switching system having call pickup service
FR2044847A5 (en)
GB1270558A (en) Mobile selective calling systems
JPS5313806A (en) Telephone extension system
JPS5362404A (en) Incoming call charging system
CA984041A (en) Mobile home telephone terminal system
JPS5328306A (en) Channel geover system of busy channel i n mobile communication
JPS5642443A (en) Message system of mobile radio communication
GB1480221A (en) Telephone intercommunication systems
JPS54114017A (en) Trace telephone system
JPS55128939A (en) Mobile message communication system
JPS5313802A (en) Call control system for mobile radio
GB1473370A (en) Intercommunication systems
GB1326696A (en) Transmitter-receiver for a radio telephone network linked to a wired telephone network
JPS5617535A (en) Selective calling system
JPS5428507A (en) Mutual connection identifying system between
GB1082734A (en) Land-to-mobile telephone link
JPS57203348A (en) Mobile radio communication system
JPS53129503A (en) Calling communication system for mobile body on mobile communication
GB1480226A (en) Telephone intercommunication systems
GB1250452A (en)
JPS51113401A (en) Privacy telephone communication system