JPS52122020A - Calling signal system - Google Patents

Calling signal system

Info

Publication number
JPS52122020A
JPS52122020A JP3838876A JP3838876A JPS52122020A JP S52122020 A JPS52122020 A JP S52122020A JP 3838876 A JP3838876 A JP 3838876A JP 3838876 A JP3838876 A JP 3838876A JP S52122020 A JPS52122020 A JP S52122020A
Authority
JP
Japan
Prior art keywords
calling signal
signal system
calling
cycle
signal
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
JP3838876A
Other languages
Japanese (ja)
Inventor
Shigeru Shimizu
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP3838876A priority Critical patent/JPS52122020A/en
Publication of JPS52122020A publication Critical patent/JPS52122020A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To resolve the difficulty of the identification caused by the degradation of service caused by the long dialing delay time or the disunity of the calling signal cycle by sending the calling tone having the unified cycle or the calling signal in the most short no signal state to the subscriber.
COPYRIGHT: (C)1977,JPO&Japio
JP3838876A 1976-04-06 1976-04-06 Calling signal system Pending JPS52122020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3838876A JPS52122020A (en) 1976-04-06 1976-04-06 Calling signal system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3838876A JPS52122020A (en) 1976-04-06 1976-04-06 Calling signal system

Publications (1)

Publication Number Publication Date
JPS52122020A true JPS52122020A (en) 1977-10-13

Family

ID=12523887

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3838876A Pending JPS52122020A (en) 1976-04-06 1976-04-06 Calling signal system

Country Status (1)

Country Link
JP (1) JPS52122020A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972264A (en) * 1982-10-18 1984-04-24 Nakayo Tsushinki:Kk Call signal control circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5972264A (en) * 1982-10-18 1984-04-24 Nakayo Tsushinki:Kk Call signal control circuit

Similar Documents

Publication Publication Date Title
JPS5434709A (en) Call interruption system in facsimile communication
JPS53140908A (en) First ringing control system in time sharing exchanger
JPS52130210A (en) Subscriber condition display control system
JPS52122020A (en) Calling signal system
JPS5331904A (en) Informing system for facsimile communication result
JPS53117922A (en) Absence reception voice answer skip system
JPS52151503A (en) Facsimile exchange system by crossbar switchboard
JPS52125213A (en) Absence transfer system
JPS5247305A (en) Extension calling systemof button telephone system
JPS537105A (en) Transmission relay exchange system for aural and facsimile signals
JPS52139310A (en) Subscriber circuit
JPS51138309A (en) Originating subscriber control system at a time of all origi nating registers being busy
JPS538512A (en) Facsimile communication system
JPS5338204A (en) Automatic sending device of pulsing signal
JPS5235598A (en) Guarding system
JPS5283103A (en) Additional unit for direct international automatic dialing telephone s et
JPS5345907A (en) Scanning system of telephone subscriber
JPS5238136A (en) Distance relay system
JPS53124008A (en) Call signal transmission system
JPS5414112A (en) Repeating and delivery system for signal
JPS5313338A (en) Digital delay circuit
JPS5224024A (en) Image communication system
JPS52136512A (en) Subscriber loop monitor system
JPS51120117A (en) Circuit system for binary-coding video signals
JPS529310A (en) Relaying system