JPH0340698A - Key telephone system - Google Patents

Abstract

PURPOSE:To provide a standard type terminal equipment together with an exclusive key telephone system in common to one extension port by switching a call automatically to the call for the standard type terminal equipment when the exclusive telephone set does not reply the call at the arrival of the call in the hybrid constitution. CONSTITUTION:An exclusive key telephone system 100A connects to an extension A, an exclusive key telephone system 100B connects to an extension B, and a standard telephone set 201 connects to an external connection port 110 of the exclusive key telephone system 100A. When a call from the telephone set 100B to the telephone set 100A exists, a control section 2 of a master set 1 sends the incoming signal and starts a timer simultaneously, and when the telephone set 100A is not hooked off within a preset time, a telephone set side control section 101 in the telephone set 100A is commanded via a data transmission line 3, an analog 106 is turned off to close parallel connection relays 111, 112 and the extension A, B are connected by a cross point switch 9. Thus, the exclusive key telephone system 100B and the standard type telephone set 201 connecting to the exclusive key telephone system 100A are brought to the communication enable state.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a button telephone device.

BACKGROUND OF THE INVENTION There are many types of extension terminals connected to private automatic branch exchanges, ranging from what is generally called a standard telephone to multifunction telephones, answering machines, facsimile machines, and the like.

In addition, key telephone devices that have various functions in addition to a simple exchange function are becoming popular.

This key telephone device consists of a main device equipped with a switching function and various other control and monitoring functions, and a key telephone designed exclusively for the main device. Two sets of lines, a voice line (hereinafter referred to as T/R line) and a data line, are provided between the main unit and each dedicated button telephone to transmit voice signals. Data for various controls is exchanged between the terminal and each dedicated button telephone via this data line. For example, off-hook and on-hook information of a dedicated key telephone is transmitted to the main unit via this data line, and when a call is received, 1. In this case, instead of directly sending a ringing bell signal from the main device via the T-R line, the main device sends a command to the dedicated button telephone to emit a ringing tone via the data line, and then sends the command. The control unit inside the dedicated button telephone that receives the call controls the built-in ringing sound source to generate a ringing sound.

This data line is also used to display various information on the dedicated button telephone.

Incidentally, there is a so-called hybrid key telephone device as one of such key telephone devices, which is configured so that a terminal other than a dedicated key telephone, such as the aforementioned standard telephone, etc., can be connected to the main device. That is, the configuration when viewed from inside the main unit's TR line connection terminal is similar to that of a standard type exchange, and can be used even when a standard type telephone is connected. In this case, when a standard telephone is connected, off-footer and on-hook information is transmitted to the main device by the DC loop current on the T-R line, so the main device has a power supply for the loop current and a ring trip circuit. Equipment for standard terminals such as the following is provided. Also, when receiving a call, T
- A ringing bell signal will be sent to the standard telephone via the R line.

By the way, if you were using a standard telephone or other standard terminals (answering machine, facsimile machine, etc.) and a standard private branch exchange before introducing such a hybrid key telephone device, even if you are using a new Even if the system changes, it is desirable to continue using the answering machine and facsimile machine. With a hybrid key telephone device, such a standard terminal can be connected and used as is. However, in that case, this standard terminal device would occupy one extension port of the main device.

Problems to be Solved by the Invention However, in the conventional hybrid key telephone device, it is not possible to connect the communication circuit of a dedicated key telephone and an external standard terminal in parallel to the same extension port.

If it is a hybrid type, a standard terminal can be connected and used alone, but in that case, this standard terminal will occupy one extension port of the main device, which would reduce the number of terminals. This will not make effective use of the extension port.

Even if you try to connect the dedicated key telephone telephone call circuit and a standard answering machine in parallel, as long as the main device is set to connect the dedicated key telephone telephone,
Even if there is an incoming call, the number 44 does not come to the answering machine, so the answering machine cannot automatically answer the call.

Therefore, in this case, you will need to switch the settings on the main device and reconfigure it as if a standard terminal is connected, but this will also stop all the various functions that are only available on the dedicated button telephone. This causes many inconveniences.

The present invention was made in view of the above problems, and is a hybrid type terminal that connects standard terminals in parallel and automatically transfers incoming calls to the standard terminal. In order to solve the above-mentioned problems, the present invention provides a button telephone device.In a hybrid configuration, when a call is received on an extension to which a dedicated telephone is connected, the present invention provides a button telephone device that first sets a ring tone for the dedicated telephone. If there is no response from the dedicated telephone after a specified period of time has passed, connect the voice line of the standard terminal attached to the dedicated telephone to the voice line from the main device, and connect that extension. As for the standard terminal, it is assumed that the terminal is temporarily connected, and the system is configured to send a bell signal for the standard terminal and perform a call by detecting the hook.

Effect With the above configuration, if a dedicated telephone and a standard terminal are installed on the same extension, the call will be automatically dialed even if the dedicated telephone does not answer the call. will switch to the calling operation for the attached standard terminal.

Embodiments Hereinafter, embodiments of a key telephone device according to the present invention will be described based on the drawings. In FIG. 1, 1 is the main device. In the main device 1, 2 is a control section of the main device, and 3 is a data transmission circuit. The control unit 2 exchanges data with each extension terminal via the data transmission circuit 3. 4 is a subscriber circuit which performs balanced-unbalanced conversion, etc. with each extension terminal.

As an extension telephone, in addition to a dedicated button telephone, standard terminals such as standard telephones that have been widely used in the past can be connected. Therefore, the subscriber circuit 4 is designed to be compatible with both types. Also subscriber circuit 4
is equipped with a current source for supplying communication current to each extension terminal.

Reference numeral 5 denotes a hook detection circuit, which detects the hook of an extension telephone depending on the presence or absence of a loop current. If a standard telephone is connected as an extension telephone, the hook detection circuit 5 also detects dial pulses from the standard telephone. 6 is a ringing signal generation circuit for generating a bell signal, that is, an alternating current signal with a frequency of about 60°.When a standard terminal is connected as an extension telephone, when an incoming call is received on that extension, the T A ringing signal generating circuit 6 is periodically connected to the -R line, and a bell signal is sent to the standard terminal. 7 is T-Rt+l of the extension phone that received the call.
This is a relay for periodically connecting the calling signal generating circuit 6 to I. 8 is a ring trip circuit which, when a standard terminal is connected as an extension telephone, detects an off-footer of the terminal while sending a bell signal to the standard terminal.

The control unit 2 includes operation control means for when a dedicated telephone is connected to the extension port, that is, dedicated telephone control means, and operation control means for when a standard terminal is connected to the extension port, that is, standard terminal control means. It has both.

When a dedicated telephone is connected, the dedicated telephone control means controls the operation while exchanging control data with the dedicated telephone via the data line, and when a standard terminal is connected, the The standard terminal control means performs operational control based on information sent from the standard terminal via the voice line.

Reference numeral 9 denotes a point switch for forming a voice communication path between each extension line and between the extension line and the central office line.

100 is a dedicated key telephone. Dedicated button telephone 1
00, 101 is a telephone side control unit, and 102 is a data transmission circuit. Main device 1 and each dedicated button telephone 10
Data for various controls is exchanged with 0 through this data transmission circuit 102 and the data line. For example, the data line is also used to display off-hook and on-book information of the dedicated button telephone 100, a ring tone command from the main device 1 when a call is received, and various information on the dedicated button telephone 100. TO3 is a communication circuit, and the communication circuit 103 includes a hybrid circuit, a handset circuit, and a speakerphone circuit. 10
4 is a hook switch, which is open when the handset is placed on the cradle and closed when the handset is removed from the cradle. 114 is a relay for forming a DC loop, and the relay 114 operates in conjunction with the hook switch 104. 1
05 is a ringing tone generating circuit for generating an audible alternating current signal for calling, and 106 is an analog switch for sending an audible alternating current signal from the ringing tone generating circuit 105 to a speaker in the call circuit 103 when a call is received. That is, by closing the analog switch 106, the communication circuit 10
The ringing tone will be emitted from the 3rd speaker. Reference numeral 107 denotes a tone ringer circuit, which is used to generate a ring tone from the speaker in the call circuit 103 in response to a bell signal sent from the main device 1 via the T/R line when the dedicated button telephone is in a power outage mode. . That is,
When normal power is not supplied to the dedicated button telephone due to a power outage, etc., the ringer circuit 105 cannot operate, so the tone ringer circuit 107 operates as the main device 1.
Based on the power for the bell signal sent from 1 through the TR line, a ring tone is sounded from a speaker in the telephone communication circuit 103. 108 is a key manual means for the user to perform various operations; 109 and 110 are external connection ports for connecting a standard terminal; 111 and 1
12 is the standard type terminal, etc. mentioned above, which is the dedicated button telephone T-
These are parallel connection relays for connecting in parallel to the R line, and these parallel connection relays are individually provided corresponding to each external connection port.

200 and 201 are standard answering machines and standard telephones connected to external connection port 109 and external connection port 110.

FIGS. 2 to 5 are flowcharts showing the processing steps of the control unit 2 on the main device side regarding operations related to transfer calls, and FIGS. 6 and 7 are flowcharts showing the processing steps of the control unit 2 on the main device side regarding operations related to transfer calls. FIGS. FIG. 8 is a sequence diagram showing operations related to transfer calls.

The operation related to the transfer call will be explained below with reference to FIG. Here, the dedicated button telephone connected to line A is called dedicated button telephone 100A, and the dedicated button telephone connected to extension B is called dedicated button telephone 100B. It is assumed that a standard telephone 201 is connected as shown in FIG.

Assume that at some point, a call is made from the dedicated button telephone 100B to the dedicated button telephone 100A.

When the control unit 2 on the main device side receives a connection request from the dedicated button telephone 100B to the dedicated button telephone 100A (condition B
a) If extension A is on standby, call processing for extension A is performed. That is, since it is the dedicated key telephone that is connected to extension A, an incoming call signal indicating that there is an incoming call is sent to the dedicated key telephone 100A via the data transmission circuit 3 (state fib).

The telephone side control unit 101 in the dedicated key telephone 100A operates the ring tone generation circuit 105 and turns on the analog switch 106 in accordance with the above-mentioned incoming call signal, thereby turning on the telephone call circuit 10.
The ringtone will be played from the speaker in 3.

The control unit 2 starts a timer at the same time as sending an incoming call signal to the dedicated key telephone 100A, and determines whether the dedicated key telephone 100A is off-hook within the time set by the preliminary system program, that is, within the timeout period. Here, if the dedicated button telephone 100A is not off-hook within the above timeout period, the parallel connection relay 11 in the dedicated button telephone 100A
1 or parallel connection relay 112 is performed. That is, it instructs the telephone-side control unit 101 in the dedicated button telephone 100A to close the parallel connection relay 111 and the parallel connection relay 112 via the data transmission circuit 3 (state C). When the telephone side control unit 101 receives the above instruction, it first switches the analog switch 10 according to the instruction.
6 and turn off parallel connection relay 111 or parallel connection relay 1].

Conclude 2. When the process is completed, the telephone side control unit 101 notifies the control unit 2 of the completion via the data transmission circuit 102 (state, ILlt d ). Main device 1
When the fR control unit 2 accepts the signal, it controls the ring signal 0 generation circuit 6 and relay 7 to send out a bell signal using alternating current, in the same way as when a standard terminal is connected to extension A. conduct. That is, the ringing signal generation circuit 6 is operated, the relay 7 is turned on and off, and an AC signal is sent to the dedicated button telephone 100A and the standard telephone 201 connected in parallel to the dedicated button telephone 100A via the TR line (
Condition e). Then, the standard telephone 201 makes a ringing tone, and when the standard telephone 201 goes off-hook, the ring trip circuit 8 detects this and the relay 7
At the same time, the operation of the calling signal generating circuit 6 is stopped, and then the cross point switch 9 connects extension A and extension B. Therefore, the dedicated button telephone 10
0B and the standard telephone 201 connected to the dedicated button telephone 100A become available for conversation (state g). Also, at this time, hook detection will be performed for that extension depending on the presence or absence of loop current.

As described above, in this embodiment, the dedicated button telephone 100A
If there is no response even when the ring tone is emitted, the function automatically switches to forwarding call operation, and the dedicated button telephone 100A
Since the standard telephone 201 connected to the external connection port can continue to ring, the telephone connected to the external connection port can be used as a type of forwarding phone. For example, if the standard telephone 201 connected to the external connection port is placed in a different room from the room where the dedicated button telephone is installed, even if the user is near the standard telephone 201 and the dedicated button Even if it is not possible to answer on the telephone, the telephone is automatically transferred from the dedicated button telephone to the standard telephone 2O1 and the answer can be made on the standard telephone 201.

Further, for example, if the control unit 200 is an answering machine and the control unit 200 is set to make a forwarded call, if there is no response on the dedicated key telephone within the timeout period, the answering machine will automatically answer the call. I can do it.

In addition, by individually providing parallel connection relays 111 for each of the plurality of parallel external connection ports as described above,
Depending on the purpose, it is also possible to select an external connection port for transfer calls using a key device on the dedicated button telephone 100A.

Effects of the Invention As described above, in a hybrid configuration, when a call is received on an extension to which a dedicated telephone is connected, the present invention first instructs the dedicated telephone to ring, and then rings for a predetermined period of time. If there is no response from the dedicated telephone after the period has passed, connect the audio line of the standard terminal attached to the dedicated telephone to the audio line from the main device, and connect the standard terminal from the main device. By configuring the phone to call using a bell signal, one extension port can be equipped with both a dedicated button telephone and standard terminals, such as a standard telephone, answering machine, and facsimile. Be able to use it effectively. In other words, even if the dedicated telephone does not answer the call when an incoming call is received, the call will automatically switch to a bell signal for the attached standard terminal, and the standard terminal will temporarily connect to that extension. Since it will operate as if it were a standard terminal, it can be used with a standard terminal. Therefore, when switching from a standard telephone exchange to such a hybrid button telephone device, if conventional terminals such as answering machines and facsimile machines are used as they are, the advantages of multi-function button telephones will not be lost. (Now that it can be used, its practical effects are great.

[BRIEF DESCRIPTION OF THE DRAWINGS] FIG. 1 is a block diagram of a button telephone device according to an embodiment of the present invention, and FIGS. 2, 3, 4, and 5 are operations related to transfer call operations of the button telephone device. Flowcharts showing the processing steps of the control unit on the main device side, FIGS. 6 and 7
Figure 8 is a flowchart showing the processing process of the control unit on the dedicated button telephone side regarding the operation related to the transfer call operation.
The figure is a sequence diagram showing operations related to the transfer call operation. 2... Control unit 4... Subscriber circuit 1... Main device 1 3... Data transmission circuit 5... Hook detection circuit 6... Calling signal generation circuit 8. ... Ring trip circuit 9 ... Cross point switch 100 ... Dedicated button telephone 101 ... Telephone side control section 102 ... Data transmission circuit 103 ... Call circuit 104 ...・Hook switch 105...Ring tone generation circuit 7...Relay 106...Analog switch 107...Tone ringer circuit 108...Key manual means 109.110...External connection port 111.112
...Parallel connection relay 114...Relay

Claims (1)

[Scope of Claims] A main device having an exchange function and a dedicated telephone for exclusive use of the main device, an audio line that enables the transmission of audio signals, a data line that enables the transmission of control data, a dedicated telephone control means for controlling operations while exchanging control data with the dedicated telephone via the data line when the dedicated telephone is connected to the extension port; and a standard terminal connected to the extension port. and a standard terminal control means for controlling operations based on information from the standard terminal sent via the voice line when the dedicated telephone is equipped with a standard terminal. A connector for a standard terminal device, and a relay and its control means for connecting an attached standard terminal device to the audio line according to a relay operation command signal sent from the main device, and the main device is dedicated to When a call is received on the extension to which a telephone is connected, a command is first given to the dedicated telephone to ring, and if there is no response from the dedicated telephone after a predetermined period of time, the call is returned to the dedicated telephone. A button telephone device characterized in that it is configured to send out a relay operation command signal and also to send out a bell signal for the standard terminal device via the voice line.