JPS628653A - Howler sound sending system - Google Patents

Abstract

PURPOSE:To delete a howler trunk to economize the titled system by replacing an amplifier built in respective subscribers to a variable amplifier, connecting the sound source to generate the service sound through a switch to the subscriber circuit when the howler sound is sent and raising the amplifying ratio of the variable amplifier. CONSTITUTION:A sound source 2 is not for the exclusive-use of the howler, and is the sound source to generate the service sound prepared usually at the exchange. When the information to supervise a subscriber 6 and send the howler sound is transferred to a central control circuit 1, the central control circuit 1 controls to raise the amplifying ratio of a variable amplifier 5a of a subscriber circuit 5 through a subscriber control circuit 4. A switch 3 is controlled and the section between the sound source 2 and the subscriber circuit 5 is connected. By the exchanging connecting action of the above-mentioned exchange, the output of the sound source 2 is amplified by the amplifier 5a and outputted as a howler sound by the subscriber 6.

Description

[Detailed description of the invention] (Field of commercial use) The present invention is an accumulation program control (5tored Pr.

The present invention relates to a howler sound transmission method in a gram control) type switch.

(Prior art) In the conventional howler sound transmission system, a sound source for the howler sound is installed, and when a certain subscriber is off the hook for a predetermined period of time, the subscriber's circuit is connected to the trunk trunk. The sound source output for howler sound is sent to all subscribers.

(Problems to be Solved by the Invention) Therefore, the conventional howler sound transmission method described above has the drawback that it must be integrated with the sound source and have a howler drunk.

SUMMARY OF THE INVENTION An object of the present invention is to provide a second howler sound transmission method that can solve the conventional drawback that a special howler sound source must be provided on the exchange side.

(Means for Solving the Problems) In order to achieve the above object, the howler sound transmission system according to the present invention also replaces the amplifier built in each subscriber circuit with a fully variable amplifier in the howler sound transmission system in a switching machine. Then, the sound source is connected to a subscriber circuit corresponding to the subscriber to which all the howler sound should be transmitted using all switches, and the gain of the variable amplifier of this subscriber circuit is controlled to be increased so that the whole howler sound can be transmitted. It is composed of:

(Example) Hereinafter, the present invention will be explained in more detail with reference to FIG.

FIG. 1 is a block diagram of an exchange illustrating an embodiment of the ulterior sound transmission method according to the present invention. The subscriber circuit 5 is equipped with a variable amplifier 5a instead of a normal amplifier.

The subscriber circuit 5 is a subscriber control circuit L00 (Local
Controller) 4.

Switch 3 is connected to the central control circuit Co (CentralCo
controller) 1, and can connect between the subscriber circuit 5 and the sound source 2.

The subscriber control circuit 4 is controlled by the central control circuit 1.

Sound source 2 is used exclusively for Hauler, and is a sound source that creates service sounds that are normally provided in exchanges.

When the information to monitor the subscriber 6 and send a howler sound is transmitted to the central control circuit l, the central control circuit l starts the subscriber control circuit! 4', the amplification factor of the variable amplifier 5a of the subscriber circuit 5 is controlled to be increased throughout. Then, the switch 3 is fully controlled to connect the sound source 2 and the subscriber circuit 5.

With the above exchange connection operation of the exchanger, the output of sound source 2 is transferred to amplifier 5.
The signal is amplified by the signal a, and is output from the subscriber 6 as a howler sound.

(Effects of the Invention) As explained above in detail, the howler sound transmission system according to the present invention replaces the amplifier built in each subscriber with a variable amplifier, and when transmitting the howler sound, the sound source for creating the service sound is By connecting the switch to the subscriber circuit and increasing the amplification factor of the variable amplifier, the amplified output for Shibaura can be obtained, making it possible to eliminate the Haura drunk that is integrated with the Haura sound source, making it possible to save money. effective.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an exchange showing an embodiment of the howler sound transmission method according to the present invention. 1... Central control circuit 00 (Central Con
troller) 2...Sound source 3...Switch SW4...Subscriber control circuit L00 (Local
0ontr. -1ler) 5...Subscriber circuit 5a...Variable amplifier 6...
Participant Patent Applicant NEC Corporation Agent Patent Attorney Jusai Inoro Figure 1

Claims (1)

[Claims] In the howler sound transmission method in the exchange, the amplifier built in each subscriber circuit is replaced with a variable amplifier, and the sound source and the subscriber circuit corresponding to the subscriber to which the howler sound is to be transmitted are connected using a switch. 1. A howler sound transmission method, characterized in that the howler sound is transmitted by controlling the gain of a variable amplifier in a variable amplifier circuit to be increased.