Telephone system

Description: TECHNICAL FIELD [Detailed description of the invention]

【0001】

[Industrial application field]

The present invention relates to a telephone device such as a private telephone exchange (PBX) or a button telephone device.

【0002】

[Conventional technology]

In the conventional PBX, the following operations are performed in order to realize the conference state. That is, after creating a call state with the first party, transitioning this call state to the hold state, making a call to the second party to realize the call state, and then holding the call with the first party. It restores the state.

【0003】

[Problems to be Solved by the Invention]

However, according to the above-mentioned PBX, there is a problem that the procedure for reaching the conference state is troublesome and the operation is difficult especially for an inexperienced person. The present invention has been made in view of the problems of such a telephone device, and an object of the present invention is to provide a telephone device capable of realizing a conference state by an easy-to-understand operation.

【0004】

[Means for solving problems]

In the present invention, a telephone provided with a conference state requesting means for requesting a conference state with at least two remote telephones and a dial input means used for dial input, [0005]

The calling means that calls the corresponding other party telephone together based on the request by the conference state requesting means of the telephone and the dial information input from the dial input means, and the state of the other party telephone called by the calling means. It is characterized by including a conference control means for controlling a conference call state between the telephone and the telephone that has requested the conference state.

【0006】

[Action]

According to the above configuration, a call is made to the other party and a conference state is realized only by inputting the conference request and the dial of the other party related to the conference.

【0007】

[Example]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. Extension telephones 1-1 to 1-n are provided with a conference status requesting means 101 for requesting a conference status and a dial input means 102 used for dial input. The calling means 103 receives a request from the conference state requesting means 101 and dial information related to the dial input from the dial input means 102, and makes a call to a plurality of corresponding extension telephones. In response to this ringing operation, the conference control means 104 detects the status of the other extension telephones 1-1 to 1-n and controls the conference. That is, if all the other-party extension telephones are busy, the busy tone is returned to the extension telephone related to the conference request, and if some of the other-party extension telephones are busy, the call of the other-party extension telephone in the ready state and the other-party extension in the busy state are sent. Wait for the phone to recover, and if everything is ready, call them at the same time. Then, when there is a response, the call paths are connected one after another to form a conference call state, and when the busy is restored, a call is made. The call path is formed by the part of the call path portion 105.

【0008】

FIG. 2 shows a PBX system according to an embodiment. Extension telephones 1-1 to 1-n are connected to line circuits 2-1 to 2-n, and station lines 3-1 to 3-m are connected to trunk circuits 4-1 to 4-m. The switch circuit 5 makes a call between the line circuits 2-1 to 2-n or between the line circuits 2-1 to 2-n and the station line 3-1 to 3-m under the control of the central control circuit 7. Form a road. The central control circuit 7 centrally controls each part based on the program and data in the memory 8. Then, it receives data from each part and sends data and commands to each part. More specifically, the central control circuit 7 performs a process related to a conference call using the programs of FIGS. 3 and 5 and the memory table of FIG. 4 stored in the memory 8. On the other hand, since the extension telephones 1-1 to 1-n have the same configuration, FIG. 6 shows a plan view of the extension telephone 1-1 as a representative of these. A handset 11 is mounted on the hook mechanism 12 extending to the left from the main body housing 16. On the other hand, on the upper surface of the main body housing 16, for example, a display unit 15 made of an LCD is provided. A dial key 13 is provided on the lower side of the display unit 15, and various function keys 14 are provided on the lower side and the right side thereof. The function key 14 includes, for example, a transfer hold key 14a, an extension DN key 14c, and a multi-call key 14d. The multi-call key (MDN) 14d is a key that requests a conference state.

【0009】

In general, a conference call can be made by three or more parties, but for the sake of simplicity, it is assumed that only a three-party conference state is realized. In the memory 8, for each extension (extension telephone), an area for storing the operating state (ready / busy) and an area for storing the extension number of the other extension telephone of 2 related to the conference are provided. It has a built-in memory table as shown in Fig. 4.

【0010】

In such a PBX, the central control circuit 7 operates based on the program of the flowchart shown in FIGS. 3 and 5 in the memory 8, and this will be described. The system is started, the program shown in the flowchart of FIG. 3 is started, the central control circuit 7 detects off-hook (301), and further detects the operation of the multi-call key (MDN) 14d (302). Here, if another key operation is performed, the process proceeds to another process, and if the multi-call key (MDN) 14d is operated, the dial information input using the dial key 13 is captured. (303). Whether or not there is an error in the dial information captured here is checked by detecting, for example, more than a predetermined number of digits (304). In the case of an error, an alarm is issued and the process returns to step 303. On the other hand, if there are no errors, check whether the multi-call key (MDN) 14d has been re-operated (306). If the operation is not performed again and the number data of the other telephone is input, step 303. It returns to and continues the operation. When the necessary dial input of the other party's telephone is completed in this way, the number data of the other party's extension telephone of 2 is stored in the corresponding area of the memory table of FIG. Therefore, the multi-call key (MDN) 14d is re-operated (306), and the central control circuit 7 responds to the re-operation whether at least one of the extension telephones corresponding to the dial information stored above is ready. Is detected based on the memory table of FIG. 4 (307). Here, if there is no other telephone in the ready state, the busy tone is returned to the calling telephone and the process ends (308). On the other hand, if there is a ready-to-order telephone, a ringing signal is sent to the corresponding extension telephone to make a call, and the dial information of the busy extension telephone is stored in the wait queue (Queue) register (309). , Launch the response monitoring task (310). Further, the central control circuit 7 monitors whether the other extension telephone of the waiting queue register is in the ready state based on the memory table of FIG. 4 (311). The status of each extension telephone shall be monitored by other tasks and stored in the memory table. When the other extension telephone in the ready state appears, the corresponding extension telephone is called and the extension telephone number related to this call is notified to the response monitoring task (312). Next, the central control circuit 7 detects whether there is any extension telephone that should be in a conference state and is still busy (313). Here, if there is a rest, it returns to step 311 and continues the operation, and when there is no remaining, it becomes an end.

【0011】

Figure 5 shows the operation of the response monitoring task. When it is started by activation, the response of the extension telephone of the other party related to the call is detected (501), and each time there is an answer, a communication path is formed via the switch circuit 5 and a connection is made so that a conference is possible (502). ), Detects whether the calling extension telephone remains (503), and if it remains, returns to step 501 to continue the operation, and if there is no remaining telephone, the end is reached. When the notification is given in step 312 of FIG. 3, the response to the notification is monitored. In this way, in this embodiment, basically, only by inputting the dial information of the other party's telephone, the other party can be called together (substantially at the same time), and a call path that becomes a conference call is formed by the answer. To. Needless to say, recovery from the conference state is performed by on-hooking each telephone. In addition, the conference state may be included including the station line.

【0012】

[Effect of the invention]

As described above, according to the present invention, it is possible to enter into a conference call by a simple and easy-to-understand operation, which is convenient.

[Simple explanation of drawings]

[Figure 1]

The block diagram of one Example of this invention.

[Figure 2]

The block diagram of the PBX system which is an Example of this invention.

[Fig. 3]

The flowchart which shows the operation of one Example of this invention.

[Fig. 4]

The figure which shows the memory table used in the main part of one Example of this invention.

[Fig. 5]

The flowchart which shows the operation of one Example of this invention.

[Fig. 6]

Top view of an embodiment of the present invention.

[Explanation of symbols]

1-1 ~ 1-n Extension telephone 13 dial Key 14 Function key 14a Hold transfer Key 14c extension DN key 15 indicator 5 switch circuit 6 bus 7 Central control circuit 8 Memory 101₁~ 101_n Conference status request means 102₁~ 102_n Dial input means 103 Calling means 104 Conference control means 105 Callway