JPS585072A - General calling system by key telephone set - Google Patents

Abstract

PURPOSE:To eliminate the need for a calling subscriber to generate a chime tone, by providing the main device of a key telephone set with a tone generating circuit, and sending a tone for a certain time during general calling. CONSTITUTION:When a general calling number is dialed on a key telephone set, a microprocessor CPU reads the signal through a data bus 22 and a data interface D1 to turn on a tone switch matrix SW1 and also to drive a chime tone generating circuit G and a timer TM through an input and output port I/O. At this time, a switch circuit SW2 connects an amplifier AMP and an external speaker SP to the chime tone generating circuit G to send out a chime tone to the speaker. When the timer TM clocks a certain time, the switch circuit SW2 switches to the side of the tone switch matrix SW1 to send the voice of a calling subscriber to the speaker SP.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a simultaneous calling method in a key telephone device, particularly a simultaneous calling method in an electronic key telephone device which has a central processing unit built into the main device and controls the key telephones using a storage program system. Conventionally, in mass calling, where a 〇 button telephone calls an external speaker via an extension trunk, one speaks into the transmitter of the calling telephone, and the voice of the caller is broadcast from the external speaker. The caller's voice is being broadcast from an external speaker.

According to the present invention, the present invention includes a plurality of key telephones, a main device having a built-in central processing unit, and an external speaker. A simultaneous calling method is obtained in a button telephone device that connects to an external speaker and performs simultaneous calling.

That is, the present invention provides a key telephone device which is controlled by a main unit Kurayoshi accumulation program system which incorporates 41a button telephones and a central processing unit. The sound is first broadcast from an external speaker, and after a certain period of time, the sound from the transmitter of the calling electric protection machine is broadcast from the external speaker. Note that a simple oscillation circuit may be provided in place of the chime sound generating circuit, and a single tone may be used in place of the chime.

Next, embodiments of the present invention will be described with reference to the drawings.
[No.] I! gl is a block diagram of one embodiment of the present invention. In the figure, 1 is the main device], the main device 1 is a Totsunku circuit TK, an audio switch matrix 8W1. Input/output capo of microprocessor CPU, V output processor TCPU
) Ilo and aλN switch circuit 8W2, which is the OM and memory storing the program tube. Chime sound generation circuit G, chime sound generation circuit timer TM, amplification circuit AM
P.

Audio interface V1% data interzeis D
i, etc. are built-in button telephones, and the main unit's voice interface VIK%★9 data buses 22 and 32 are connected via the voice bus 21 and $1i.
The main device 10 is connected to the data interface D1 via the main device 10. SP is an external speaker.

The button information and hook information of the horizontal button telephone I are transmitted via the data bus 22 to the data interface D of the main device I.
1 and is processed by the microprocessor CPUK1 through the input/output port 110.Lamp data is also sent from the main device 1 to the telephone set via this data bus 22.On the other hand, the communication path of the telephone set is the voice bus. 21° voice switch! Other service signal tones sent from the chief mourner device 1 are similarly sent to the telephone TE11 via the audio bus 21. Button phone horizontal nK
Similarly, data is exchanged via the data bus 32, and audio signals are sent to and received from the main device l via the audio bus 31.

Now, let's take the example of making a simultaneous call from a horizontal butane telephone I.If you press the extension button on the Ofmen telephone @IIITRLI and raise the handset.

Via the data bus 22, a data interface DIK off-hook signal/extension switch signal in the main device 1 is sent. As a result, the microprocessor CPU transfers the extension lamp information to the data interface DI and the data bus 22.
through the button telephone horizontal I, and turns on the voice switch matrix 8W1 to switch on the trunk circuit TK% voice interface V1. 0ζ data processing so as to send a dial tone to the telephone transverse I via the voice bus 21;
Then, the extension lamp of the horizontal butane telephone I lights up and a dial tone is heard from the handset.

When the general calling number is dialed on the button telephone TBLl, the data interface D1 is connected via the data bus 22.
The microphone-processor CPU turns on the audio switch matrix 3 so as to be connected to an external speaker. The microprocessor CPU drives the chime sound generation circuit G and the timer T N Yt through the input/output port. At this time, the switch circuit 8W2 connects the chime sound generation circuit GIIK@, and the chime sound generation circuit G increases the width. Circuit A
It is connected to an external speaker SP via the MP, and the Teyai keynote is played. Therefore, a certain time is determined by the Thai v-TM, and when that time is reached, the switch circuit 8W2 switches to the audio switch matrix 8W111.p The caller's voice (information) is connected to the amplification circuit AMP and broadcast from an external speaker. 10 When the caller completes the information and turns off the handset of the button telephone, the main device is activated! An on-hook signal is sent to the data interface D1 within. Accordingly, the microprocessor tcPU sends the extension lamp information to the key telephone meter via the data interface Dl and the data bus 22, and also turns on the voice switch matrix.
The chime sound generation circuit G and timer TjJ are driven.

At this time, Sui Vte times *8Wz is the chime sound generation circuit GII
The chime sound generation circuit G is connected to the external speaker 8F via the amplifier circuit MP, and the chime sound is played until a certain predetermined time.

As explained above, 1) the present invention has the effect of eliminating the need for the caller to make a chime sound, etc. by adding a sound generation circuit to the main unit of a key telephone device incorporating a central @ salt device. There is 0

[Brief Description of the Drawings] Fig. 1 is a block diagram showing one embodiment of the present invention. 01...Main device, TK-...Trunk circuit, 8W1...・Voice switch! Trix, CP
U...v4 Chlobrosena, 110...
・Input/output port, 8W2...Switch circuit, G
...Chime sound generation circuit, TM...Timer, Al14F...Width amplification circuit %v1...
・・Audio interface, DL・・・Data interface, TBLI, position n・・・key telephone, SP・・・external speaker, 21.31・・
...Audio path, 22゜32...Data bus.

Claims (1)

[Claims] When the external speaker is called, the caller's voice is connected to the external speaker and all at once. A simultaneous calling method in a button telephone device characterized by making calls.