JPS5531311A - Direct trunk setting system for multi-channel radio communication system - Google Patents

Direct trunk setting system for multi-channel radio communication system

Info

Publication number
JPS5531311A
JPS5531311A JP10432678A JP10432678A JPS5531311A JP S5531311 A JPS5531311 A JP S5531311A JP 10432678 A JP10432678 A JP 10432678A JP 10432678 A JP10432678 A JP 10432678A JP S5531311 A JPS5531311 A JP S5531311A
Authority
JP
Japan
Prior art keywords
channel
transmitted
signal
direct trunk
station
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.)
Pending
Application number
JP10432678A
Other languages
Japanese (ja)
Inventor
Toshiro Yamaguchi
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP10432678A priority Critical patent/JPS5531311A/en
Publication of JPS5531311A publication Critical patent/JPS5531311A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To set up the direct trunk exclusive for the necessary period between the control station and the specified terminal station in the system of the multi-channel radio communication which is constituted with the control station and several terminal stations.
CONSTITUTION: Transmitter/receuver TRX1∼TRXn are installed at control station MS corresponding to several channels CH1∼CHn featuring different frequency waves. And an optional idle channel, for example, CH1 is selected for the holding channel at station MS, and holding signal SS is transmitted from signal transmitter SSm. At the same time, the idle signals are transmitted to other idle channels CH2∼CHn from transmitter SSm. Then at each terminal station TS, the idle signals are detected to have switching to the holding channel. In case the direct trunk is set up due to an emergency state, both designation signal Sc1 and circuit setting signal S are transmitted from holding channel CH1. And these transmitted signals are detected at designated terminal TS to send back the answer signal. Thus a direct trunk is completed between stations MS and TS to be then held, and the holding channel is switched to other channels.
COPYRIGHT: (C)1980,JPO&Japio
JP10432678A 1978-08-29 1978-08-29 Direct trunk setting system for multi-channel radio communication system Pending JPS5531311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10432678A JPS5531311A (en) 1978-08-29 1978-08-29 Direct trunk setting system for multi-channel radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10432678A JPS5531311A (en) 1978-08-29 1978-08-29 Direct trunk setting system for multi-channel radio communication system

Publications (1)

Publication Number Publication Date
JPS5531311A true JPS5531311A (en) 1980-03-05

Family

ID=14377802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10432678A Pending JPS5531311A (en) 1978-08-29 1978-08-29 Direct trunk setting system for multi-channel radio communication system

Country Status (1)

Country Link
JP (1) JPS5531311A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010843U (en) * 1983-05-28 1985-01-25 フオルクスヴア−ゲンヴエルク・アクチエンゲゼルシヤフト Device for continuous fuel injection
JPS60195966U (en) * 1984-05-29 1985-12-27 フオルクスヴアーゲンヴエルク・アクチエンゲゼルシヤフト Device for continuous injection of fuel
JPH03205946A (en) * 1990-05-23 1991-09-09 Sanyo Electric Co Ltd Cordless telephone system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6010843U (en) * 1983-05-28 1985-01-25 フオルクスヴア−ゲンヴエルク・アクチエンゲゼルシヤフト Device for continuous fuel injection
JPS60195966U (en) * 1984-05-29 1985-12-27 フオルクスヴアーゲンヴエルク・アクチエンゲゼルシヤフト Device for continuous injection of fuel
JPH03205946A (en) * 1990-05-23 1991-09-09 Sanyo Electric Co Ltd Cordless telephone system
JPH048983B2 (en) * 1990-05-23 1992-02-18

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