JPH0243887A - Electronic pushbutton telephone set - Google Patents

Abstract

PURPOSE:To output a trunk line incoming tone from an external speaker when a telephone signal reaches the trunk line by providing a channel switching means connecting a trunk line incoming tone source and the external speaker. CONSTITUTION:The set is provided with a channel switching means 6 connecting the external speaker 9 and the trunk line incoming tone source 4 or/and pushbutton telephone sets 7a-7n, a simultaneous broadcast signal amplification means 11 amplifying the trunk line incoming tone and voice, an external amplification means 12 amplifying the trunk line incoming tone and the voice, and a simultaneous broadcast control relay 14 activating the external amplification means 12. When a telephone number is received from the trunk line, while the trunk line incoming tone from the trunk line incoming tone source 4 is sent to the pushbutton telephone set, the trunk line incoming tone source 4 and the external speaker 9 for simultaneous broadcast are connected when the external speaker 9 is not in simultaneous broadcast. Thus, the trunk line incoming tone is outputted from the external speaker 9.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electronic button telephone device to which an external speaker for simultaneous broadcasting is connected and a central office line ringing tone is output to the external speaker.

BACKGROUND OF THE INVENTION A conventional electronic button telephone device includes: - a call path for broadcasting;
A connection terminal for connecting to an external speaker was provided, and by providing external amplification means and an external speaker, simultaneous broadcasting could be performed from the button telephone.

Problems to be Solved by the Invention However, conventional electronic button telephone devices have not been provided with a communication path for connecting a central office line ringing sound source and an external speaker. For this reason, the conventional electronic key telephone device has a problem in that when a telephone signal arrives on the central office line, the central office line ringing tone cannot be output from the external speaker.

The present invention solves these conventional problems,
It is an object of the present invention to provide an excellent electronic button telephone device capable of simultaneously broadcasting a central office line ringing tone from an external speaker when a telephone signal arrives on the central office line.

Means for Solving the Problems In order to achieve the above-mentioned problems, the present invention provides a conventional electronic button telephone device with: - simultaneous broadcast switching determining means for determining switching of simultaneous broadcasts, an external speaker and a central line ringing sound source or/and and a call path switching means for connecting the key telephone and the key telephone; a broadcast signal amplifying means for amplifying the office line ring tone and voice; and an external amplification provided outside the electronic button telephone main device for amplifying the office line ring tone and voice. means, a broadcast control relay for operating the external amplification means, and an external speaker for simultaneously broadcasting the station line ring tone and voice, and when a telephone signal arrives on the station line, the station line ring tone is transmitted from the button telephone. In addition to being output, it is also possible to simultaneously broadcast from external speakers.

Effects Since the present invention is configured as described above, it has the following effects. That is, when the electronic button telephone device according to the present invention receives a telephone signal from a central office line, it sends a central office line ringing tone from a central office line ringing sound source to the central telephone. On the other hand, if the external speaker is not broadcasting at that time, by connecting the station line incoming sound source and the external speaker for broadcasting,
It is possible to output a central line ring tone from an external speaker.

Embodiment The figure is a block diagram showing an embodiment of the electronic button telephone main device according to the present invention.

In the figure, 1 (181lb, -1m) is the central line, 2 (2a,
2b, . . . 2m) is a central office line incoming call detecting means that detects an incoming call when a telephone signal arrives on the central office line, and 4 is a central office line that generates a sound to notify the key telephone 7 and external speaker 9 of the incoming call. The ringing sound source 5 is a central office line ringing tone communication path that connects the central office line ringing sound source 1 and the communication path switching means 6.

Further, 6 is a call path switching means for selectively connecting the external speaker 9 and the office line ringing sound source 4 or/and the key telephones 7a to 7n, 7 (7a, 7b, . . . 7n) is a key telephone, and 8 ( 8a, 8b, -.F3n) are telephone signal communication paths connecting the button telephone 7 and the communication path switching means 6;
Reference numeral 9 denotes an external speaker for simultaneously broadcasting the office line ring tone and voice; 10 indicates a communication path for broadcasting that connects the communication path switching means 6 and the broadcast signal amplifying means 11; and 11 indicates the office line ring tone and voice. Reference numeral 12 denotes an external amplification means provided outside the electronic button telephone main unit 20 to amplify the central office line ringing tone.

Further, 13 is a broadcast control relay control line that controls a broadcast control relay 14, 14 is a broadcast control relay that operates the external amplification means 12, 20 is a button telephone 7, - an electronic button telephone main unit that controls broadcast, etc. 31 is a control means for controlling reception of telephone signals, simultaneous broadcasting, etc., and 32 is a simultaneous broadcast switching determining means for determining switching of simultaneous broadcasting.

Next, the operation of one embodiment of the present invention will be explained.

When an incoming call signal to the electronic button telephone 7a is input to the office line 1a, the office line incoming detection means 2a sends out an incoming call detection signal to the main control means 31 in the control means 3. When the main control means 31 receives the office line incoming detection signal, it closes the B contact of the communication path switching means 6, connects the office line incoming sound source 4 and the key telephone 7a, and connects it to the electronic key telephone main device 20. A central office line incoming signal tone is sounded from the button telephone 7a.

On the other hand, the main control means 31 performs the above control and sends a signal to the simultaneous broadcast switching determination means 32. - When the simultaneous broadcast switching judgment means 32 receives the above signal, the key telephone 7 (7a, . . . ) housed in the electronic key telephone main device 20
・Check whether 7n) is broadcasting simultaneously.

When none of the button telephones 7 (7a, . . . , 7n) is performing a simultaneous broadcast, the simultaneous broadcast switching judgment means 32 causes the main control means 31 to control the cross point A in the call path switching means 6 and the simultaneous broadcast control relay. A signal is sent to turn on contact G in 14.

As a result, the main control means 31 turns on the cross point A, and furthermore, through the simultaneous broadcast control relay control line 13, -
Turn on contact G of the broadcast control relay 14. With the above connection, the station line ringing tone from the station ringing sound source 4 is transferred to the button telephone 7 and the broadcasting channel 10 via the channel switching means 6.
Output to.

- The station line ring tone output to the simultaneous broadcast communication path 10 reaches the external speaker 9 via the - broadcast signal amplification means 11 and external amplification means 12, and is broadcast from the external speaker 9 all at once.

Here, since there is only one communication path 10 for broadcasting, -
The broadcast channel 10 is set on a first-come, first-served basis.

For example, when the key telephone 7b performs a simultaneous broadcast, the control means 3 turns on the cross point C and the sound from the key telephone 7b is output from the external speaker 9.

At this time, if a telephone signal to the key telephone 7a arrives on any of the central office lines 1, the -broadcast switching determining means 32 sends a signal to the main control means 31 so as not to turn on the cross point A. Therefore, the office line ringing tone reaches the key telephone 7a from the office line ringing sound source 4 via the cross point B. When the button telephone 7b finishes broadcasting,
- The broadcast switching determination means 32 sends a signal to the main control means 31, which turns on the cross point A and controls the external speaker 9 to broadcast the station line ring tone all at once.

In the opposite case, cross points A and B are on, and the central office line ring tone is heard between the button telephone 7a and the external speaker 9.
If the key telephone 7b tries to perform a simultaneous broadcast while the signal is being output, the -broadcast switching determining means 32 sends a signal to the main control means 31 so as not to turn on the cross point C. Therefore, in this case, the button telephone 7b
is unable to broadcast all at once and receives a busy tone.

Effects of the Invention As is clear from the above-mentioned embodiments, the present invention is designed to output a central office line ringing tone to an external speaker, which is normally used only for broadcasting, when a telephone signal arrives on the central office line. This has the effect that there is no need to separately install an external ringer or the like in order to simultaneously broadcast the station line ringtone when a telephone signal arrives on the station line.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of an electronic button telephone main device according to the present invention. 1 (1a, 1b・1m) ... central line, 2 (
2a, 2b,...2m)...Central line incoming detection means,
3... Control means, 4... Office line ringing sound source, 5... Office line ringing tone communication path, 6... Communication path switching means, 7 (7a,
7b,...7n)...Key telephone, 8(8a, 8
b1...8n)...Telephone signal communication path, 9...External speaker, 10...-Broadcast communication path, 11...-
Broadcasting signal amplification means, 12... external amplification means, 13.
...-Ten broadcast control relay control line, 14...-Ten broadcast control relay, 20... Electronic button telephone main device, 31...
- Main control means, 32...-Broadcast switching judgment means, A. B, C, D, E, F, G... contacts.

Claims (1)

[Claims] The main device of the electronic button telephone device includes a broadcast switching determination means for determining switching of broadcast, a call path switching means for connecting an external speaker and a central office line ringing sound source or/and a button telephone, and a central telephone ringing tone. Broadcast signal amplification means for amplifying the voice, external amplification means provided outside the electronic button telephone main device for amplifying the office line ring tone and voice, a broadcast control relay for operating the external amplification means, and the station line incoming call. It is characterized by being equipped with an external speaker for simultaneously broadcasting sounds and voices, and when a telephone signal arrives on the central office line, the central telephone ringing tone is output from the button telephone and also broadcast simultaneously from the external speaker. Electronic button telephone device.