JPS57204678A - Holding tone sending system - Google Patents

Holding tone sending system

Info

Publication number
JPS57204678A
JPS57204678A JP9024981A JP9024981A JPS57204678A JP S57204678 A JPS57204678 A JP S57204678A JP 9024981 A JP9024981 A JP 9024981A JP 9024981 A JP9024981 A JP 9024981A JP S57204678 A JPS57204678 A JP S57204678A
Authority
JP
Japan
Prior art keywords
tone
holding
holding tone
memory
audible
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
JP9024981A
Other languages
Japanese (ja)
Inventor
Nobuo Odaka
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 JP9024981A priority Critical patent/JPS57204678A/en
Publication of JPS57204678A publication Critical patent/JPS57204678A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/428—Arrangements for placing incoming calls on hold
    • H04M3/4285—Notifying, informing or entertaining a held party while on hold, e.g. Music On Hold

Abstract

PURPOSE:To enable unifying of link control by sending of holding tone provided that the model is the same, by sending a holding tone from an audible tone generator and thereby eliminating necessity of an announcing device and an interface circuit. CONSTITUTION:In the case of audible tone sending channel, data of a memory 20 for audible tone in which audible tone is stored in digital code are read, and a selector circuit 22 is opened to output side of the memory 20 for audible tone, and audible tone data are sent out to a time division switch 10. In the case of holding tone sending channel, data of a memory 21 for holding tone in which holding tone is stored in digital code is read, and the selector circuit 22 is opened to output side of the memory 21 for holding tone, and holding tone data are sent out to a time division switch 10. Accordingly, it is not necessary to provide an annoucing device and an interface circuit. Since, the holding tone sending channel is fixed, control of holding tone can be unified provided that the model is of the same kind.
JP9024981A 1981-06-12 1981-06-12 Holding tone sending system Pending JPS57204678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9024981A JPS57204678A (en) 1981-06-12 1981-06-12 Holding tone sending system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9024981A JPS57204678A (en) 1981-06-12 1981-06-12 Holding tone sending system

Publications (1)

Publication Number Publication Date
JPS57204678A true JPS57204678A (en) 1982-12-15

Family

ID=13993218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9024981A Pending JPS57204678A (en) 1981-06-12 1981-06-12 Holding tone sending system

Country Status (1)

Country Link
JP (1) JPS57204678A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5593364A (en) * 1979-01-08 1980-07-15 Nec Corp Transmission system for digital audible signal tone

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5593364A (en) * 1979-01-08 1980-07-15 Nec Corp Transmission system for digital audible signal tone

Similar Documents

Publication Publication Date Title
JPS52122786A (en) Sequence controlling system
IL60899A (en) Time slot multiple circuit for the selective establishment of connections in a t.d.m.digital telecommunications system
HU179310B (en) Td digital switching device,in particular pcm exchange and method for supplying this with clock signal
JPS57204678A (en) Holding tone sending system
NO159049C (en) DIGITAL CONTROLLED SIGNAL GENERATION DEVICE.
DE68923100T2 (en) Format converter circuit for digital data.
JPS5324238A (en) Data processing system for display system
JPS5329008A (en) Supervision control uni t of radio transmitter output level
JPS533007A (en) Line-collection unit control system
JPS5793770A (en) Digital audible signal tone generation system
JPS6446398A (en) System for sending and controlling tone signal
JPS5299009A (en) Automatic voice responding system
JPS526040A (en) Input output control system
HU175059B (en) Circuit arrangement for controlling high-power d.c. sources
JPS5354915A (en) Multiple signal demodulation system
JPS5323232A (en) Power control system
JPS53145508A (en) Subscriber circuit control system
JPS5363941A (en) Input/output system
JPS52125240A (en) Data arrangement control system
JPS533033A (en) Code branching system for intelligent terminal unit
JPS6472653A (en) Digital talkie trunk
JPS5419615A (en) Control system for input and output unit
JPS52131081A (en) Nc data memory system in nc control unit
JPS523314A (en) Remote control system for input and output device
JPS5410607A (en) Power supply circuit for key telephone system