JPS61198997A - Key telephone set - Google Patents

Abstract

PURPOSE:To attain holding a call regardless of the external line in dialing by operating only the holding key by so constituting the system that a controller automatically discriminates whether the dialing line is a centrex external line or general external line based on the contents of a memory element. CONSTITUTION:It is assumed that the centrex external line A and a telephone set (a) are in dialing and external line C and set (c) are also in dialing likewise, and while holding, an transmission into an external line is required respectively. If the holding key 10a of the telephone set (a) is operated and the controller 12 detects it, the controller 12 transmits it to a controller 6, where the external line required to be held is judged whether it is the centrex external line or the general one from the contents stored in the storing element 13. Since the line assumed herein is the centrex external line, therefore, a relay DS1 is turned on for a specified period, the relay's contact di-1 connected with the line A is released for a specified period, and the holding of the line A is informed to the centrex exchange on the station to which the line A is connected.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a button telephone device capable of accommodating both Centrex outside lines and general outside lines at the same time.

BACKGROUND OF THE INVENTION In general, key telephone devices configured to accommodate both Centrex outside lines and general outside lines at the same time are well known, but in all of these types of telephones, in addition to a hold button, each telephone is provided with a hook button for holding calls. ing. In other words, if you are making a call to a general outside line, you cannot put it on hold in the exchange connected to the general outside line unless you put it on hold in the main device, so the normal hold button is sufficient, but for Centrex outside lines, When a call is being made to a Centrex external line, the call can be put on hold within the Centrex exchange connected to the Centrex external line, and therefore a separate hooking button is provided to distinguish between these.

Problems to be Solved by the Invention However, with this type of device, when you want to put a call on hold, you have to use a hold button or a hook button depending on the outside line that is in progress, and the operation is very troublesome. The present invention eliminates the above-mentioned drawbacks of the conventional telephone, and has a simple configuration that enables correct hold operation regardless of the outside line in progress by simply operating the hold button provided on each telephone. The purpose of the present invention is to provide an excellent key telephone device that can perform the following functions.

Means for Solving the Problems In order to achieve the above object, the present invention provides a memory element for storing information as to whether each outside line is a Centrex outside line or a general outside line, and when the hold button is pressed. Based on the information stored in this memory element by operation, it is determined whether the outside line being called is a Centrex outside line or a general outside line, and based on the judgment result, if it is a Centrex outside line, A picking signal is transmitted to the Centrex outside line so that it is put on hold in the Centrex exchange, and in the case of a general outside line, it is put on hold directly within the main unit.

Therefore, according to the present invention, there is no need to provide any special holding button in addition to the hold button as in the conventional case.
It has the effect of being able to handle both Centrex outside lines and general outside lines with a single hold button.

The embodiment diagram is a schematic configuration diagram of an embodiment of the button telephone device of the present invention. As shown in the figure, %1allb! 1C is a di-relay contact that forms a call line with each outside line, 2 is an analog switch that forms a call circuit with the telephone, 3 is a hold sound source that sends hold tone to the outside line when the call is placed on hold, and 4 is a dial tone. 5a and 5c are interface circuits for data communication with the respective telephones a and c; 6 is a control device such as a microprocessor that controls the entire device; 7a and 7c are interface circuits with the control device 6; Interface circuits 8a and 8c are used to connect audio lines from 2 to 4, and from 4 to 2.
9a and 9c are handsets, 103 and 10c are hold buttons, and 12a and 12c are control devices such as microprocessors that control the telephones a and c, respectively.

13 is a storage element for storing whether each outside line is a Centrex outside line or a general outside line; 14 is a program board for inputting whether each outside line is a Centrex outside line or a general outside line.

Next, the operation of the above embodiment will be explained. It is now assumed that Centrex outside line A and telephone set A are talking, and Centrex outside line C and telephone set C are talking. and,
Assume that each of them is trying to make an external line transfer on hold. In telephone a, the hold button 10a is suppressed and the control device 12 detects this. When the control device 12 detects this, the data is transmitted to the control device through the data communication interface circuits 7a, 5a.

When the control device 6 receives the above data, it determines whether the outside line to be put on hold is a Centrex outside line or a general outside line based on the contents stored in the storage element 13. In this case, since the outside line to be put on hold is a Centrex outside line, the DS1 relay is activated for a certain period of time, and relay contact di-1 connected to Centrex outside line A is opened for a certain period of time, indicating that the Centrex outside line is on hold. Notify the central office-side Centrex switch connected to A. In telephone C, the hold button 10c is suppressed and the control device 12 detects it. When the control device 12 detects this, the data communication interface circuits 7b, 5b
The data, ie, the pending signal, is transmitted to the control device 7 through the control device 7. When the control device 6 receives the hold signal, it determines whether the outside line to be put on hold is a Centrex outside line or a general outside line based on the contents stored in the storage element 13. In this case, since the outside line 3 to be put on hold is a general outside line, the control device 6
is directly controlled, and the communication path ■ is switched between @ and θ to put it on hold.

In this manner, according to the above embodiment, by simply operating the same hold button, the control device 6 determines whether the outside line to be held, that is, the outside line in progress, is a Centrex outside line or a general call, based on the contents stored in the memory element 13. It determines whether it is an outside line, and if it is a Centrex outside line, it sends a hold signal to the Centrex exchange by ticking, and if it is an outside line, it can be put on hold within the main equipment by controlling an analog switch in the main equipment. Which external line is the user using each time the user is placed on hold?

This has the advantage that all you have to do is operate the hold button without having to worry about each one, and the number of erroneous operations can be significantly reduced as a whole.

Effects of the Invention As is clear from the above embodiments, the present invention allows the control device to automatically determine whether the outside line being called is a Centrex outside line or a general outside line based on the contents of the memory element. This has the advantage that there is no need to worry about the type of outside line that is being used each time, and the overall operability is significantly improved.

[Brief explanation of the drawing]

The figure is a schematic configuration diagram of a Centrex button telephone device according to an embodiment of the present invention. 1a, lb, IC...Relay contact, 2...Analog switch, 3...Holding sound source, 4...Dial tone generation circuit %5a, 5c...Data communication interface circuit, 6...Control Device, 7a, 7c...Data communication interface circuit, 8a, 8c...Hybrid circuit, 9a, 9cm handset, 10a, 10c
... Hold button, 12a, 12C... Control device, 13
...Memory element, 14...Program board.

Claims (1)

[Claims] The main device has a memory element that stores information for each outside line, whether it is a Centrex outside line or a general outside line, and when the hold button provided on each button telephone is pressed, based on the information stored in the memory element. A control device is provided for determining whether the outside line on which the key telephone is talking is a Centrex outside line or a general outside line. The system is configured to transmit a hooking signal to the Centrex external line so that it will be put on hold in the Centrex exchange connected to the main equipment, and to control an analog switch in the main equipment so that it will be put on hold within the main equipment if it is a general outside line. button telephone device.