JP2545855B2 - Button telephone device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a key telephone device, and more particularly to a key telephone device capable of listening to the voice of the other speaker during transmission of a hold tone.

[Conventional technology]

Conventionally, in this type of key telephone device, when the hold button of the key telephone is pressed during the connection of the voice path between the line and the key telephone, the voice path between the line and the key telephone is disconnected and the voice of the hold tone sending section is cut off. The path is connected to the line.

[Problems to be solved by the invention]

In the above-mentioned conventional key telephone device, the line side user cannot output the voice to the key telephone user in any case during the hold, and the line partner cannot wait until the key telephone side releases the hold. There is a drawback that the voice of the side user is not transmitted.

[Means for solving problems]

A key telephone device of the present invention is a key telephone device comprising a key telephone having a hold button and a key telephone main device which is connected to a two-line office line and is provided with a hold tone generation unit, wherein the key telephone main device is the local line. To a four-line of a two-line receiving voice path and a two-line transmitting voice path, and a station line interface unit, which interfaces with the key telephone to convert a two-line voice line from the key telephone to the four line. A telephone interface section, wherein the key telephone detects a press of the hold button during a call, and a reception voice path interposed between the office line interface section and the telephone interface section holds this in a connected state. The transmission voice path releases this connection and sends the hold sound from the hold sound generation unit to the transmission voice path from the office line interface unit. The holding sound sending control means is connected to the holding sound generating part, and the receiving voice path and the transmitting voice path are exchange-connected between the station line interface part and the telephone interface part. It has a switch unit for performing the above and a control unit for performing sequence control of the entire key telephone main device.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a functional block diagram showing an embodiment of the present invention.

In this figure, the present embodiment shows two button telephones (hereinafter referred to as TE
20a, 20b and button telephone type device 1 connected to _two two-wire lines L ₁ and L _2, and TELs 20a and 20b are a special hold button 21, a handset 22, and a speaker 23, respectively. The key telephone main unit 1 is connected to the line L ₁ and has a hybrid coil (hereinafter referred to as H) 6 for converting into a two-line receiving voice path R and a two-line transmitting voice path T (hereinafter referred to as H). LINF) 4, and also connected to line L ₂ and converted into a two-line reception voice path R and transmission voice path T
LIF5 with H7 and button telephone interface circuit (hereinafter referred to as TINF) 8, which connects to TEL20a and TEL20b respectively,
9, a switch (hereinafter, referred to as SW) 3 for performing a four-wire exchange connection of a reception voice path R and a transmission voice path T between the LINF4, LINF5, and TINF8, TINF9, and a hold sound transmission unit (hereinafter referred to as S) )
A main control unit (hereinafter referred to as CPU) 2 for controlling SW3, LINF4,5, and TINF8, 9 is provided.

 Next, the operation of this embodiment will be described.

When the line L ₁ and the TEL 20a are connected to the key telephone main unit 1 and a call is in progress, that is, the line L ₁ is H6 and the transmission voice path T
When the special hold button 11 of the TEL20a is pressed in a state where it is converted into the reception voice path R and is connected to the TEL20a via the SW3 and the TINF8, the CPU2 is connected to the special hold button 11 of the TEL20a via the TINF8.
CPU2 disconnects the transmission voice path T while keeping the connection of the reception voice path R in SW3 to SW3,
SW3 to send the hold sound from S10 to the transmission voice path T on the H6 side
Control.

As a result, the hold tone is sent to the line L ₁ , but the connection of the receiving voice path R is maintained, so you can listen to the TEL2020a handset 22 or speaker 23 even while holding an emergency request etc. from the line L _1. You can

Next, in the case of restoration, the original state is restored by pressing the special hold button 21 again.

The same operation as described above is possible for the line L ₂ and TEL 20b.

〔The invention's effect〕

As described above, according to the present invention, when the button telephone user presses the special hold button during a line call, only the receiving voice path of the other party on the line side is connected to the button telephone, so that the line side user does not have to change the conventional method. Since the hold tone is sent and voice can also be sent from the user on the line side to the user on the button telephone side, the effect that the user on the line side can convey, for example, an urgent matter etc. even when the button telephone side is on hold There is.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an embodiment of the present invention. 1 ... Button telephone main unit, 2 ... Main control unit (CPU), 3
...... Switch (SW), 4,5 ...... Line interface circuit (LINF), 6,7 ...... Hybrid coil (H), 8,9 ...
... Button telephone interface circuit (TINF), 10 ... Hold tone sending section (S), 20a, 20b ... Button telephone (TEL),
21 …… Special hold button, 22 …… Handset, 23 …… Speaker.

Claims (2)

(57) [Claims] 1. A key telephone device comprising a key telephone having a hold button and a key telephone main unit connected to a two-line office line and provided with a hold tone generating section, wherein the key telephone main unit connects the two central lines to each other. Station line interface section for converting into a four-line reception voice path and a two-line transmission voice path, and a telephone interface section for interfacing with the key telephone and converting a two-line voice line from the key telephone into the four-line. The reception voice path interposed between the station line interface unit and the telephone interface unit detects that the key telephone has pressed the hold button during a call and holds the transmission voice path and the transmission voice path. The path holds the connection by releasing this connection and transmitting the hold sound from the hold sound generation section to the transmission voice path from the station line interface section. Key telephone apparatus characterized by comprising a transmission control means. 2. A holding tone transmission control means is connected to a holding tone generating portion, and a switch portion for exchanging connection of a reception voice path and a transmission voice path from a station line interface portion and a telephone interface portion, and a key telephone main unit. The button telephone device according to claim (1), further comprising a control unit that controls the entire sequence.