JPS61236266A - Telephone system - Google Patents

Abstract

PURPOSE:To notify the telephone set user that the transfer has been set in advance to the telephone set only when the user makes outgoing operation using the telephone set to which the transfer is set in advance, by providing a means to send a special dial tone. CONSTITUTION:If a telephone set 12 is hooked off when a setting is made in advance to transfer the call made to the telephone set 12 should be transferred to a telephone set 13, a central control device 2 detects the hook-off. Next, according to the information of flag area corresponding to the telephone set 12 stored in the call information table inside a main memory device 3, a special dial tone is sent to the telephone 12 from a special dial tone sending circuit 5. Therefore, by hearing a special dial tone in the telephone set 12, a user can know that call transfer is established to this telephone set. By knowing this, the user will no more bothered by a call sound of every incoming.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention allows a telephone to specify in advance that incoming calls are to be forwarded to another telephone, and the other telephone is automatically forwarded accordingly. The present invention relates to telephone devices such as electronic switching devices and key telephone devices that have the function of transmitting data to other devices.

2. Description of the Related Art In general, in electronic switching equipment, key telephone equipment, etc., if a telephone is specified in advance to forward incoming calls to another telephone, the incoming calls will be automatically forwarded accordingly. A device configured to transfer the above information to another telephone is known. By the way, this kind of thing
If you specify on a telephone that incoming calls are to be forwarded to your telephone, this must be displayed on the telephone. This is because if you forget that you have specified the above phone to forward incoming calls to another phone,
All calls made to that phone will be automatically forwarded to another phone, and even if the user of that phone is near the phone, they will always be forwarded to the other phone and the phone will no longer be usable. be.

Conventionally, in order to solve this problem, even if a phone is specified to forward an incoming call to another phone, the ringtone will ring only once, and even if the handset is raised in response, it will simply ring as normal. There is one in which only the dial tone for permission to make a call is heard.

FIG. 2 is a schematic diagram of a conventional telephone device of this type.
In the figure, 21 is a switching device, 22 is a central control unit, 23 is a main storage device, 24 is a subscriber scanning circuit, 25 is a ringing tone generation circuit, 26 to 28 are subscriber circuits, 29 to 31 are telephones, 32
is a dial tone sending circuit. FIG. 3 shows a call information table in the main memory 23, and the table includes areas for storing information such as flags for setting telephone number transfer of each telephone and telephone numbers of forwarding destination telephones. - has.

Next, the operation of the above conventional example will be explained. In FIG. 2, performing a predetermined special operation on the telephone 30,
Subsequent input of the telephone number for telephone 31 is detected by central controller 22 and written to the call information table in main memory 23 . That is, the telephone 30
1 in the flag storage area of the area for storing phone numbers.
°, in the area where you want to remember the phone number of the forwarding phone
The phone numbers of a31 are respectively stored. Here, when an incoming call is received from the telephone 29 to the telephone 30, the call is forwarded to the telephone 31 according to the forwarding settings of the telephone 30, a normal ring tone is generated on the telephone 31, and when the telephone 31 answers, the telephone 30 receives a call.
] and the telephone set 29 become ready to talk. and,
When a normal ringing tone is generated in a telephone set 31, a ringing tone is simultaneously generated in a telephone set 30 for a predetermined fixed time (for example, one second), thereby notifying that the telephone set 30 is set for transfer.

In this way, even with a conventional telephone device, by generating a ring tone for a predetermined period of time, the user of the telephone can be notified that the telephone is set to be forwarded every time there is an incoming call.

Problems to be Solved by the Invention However, with conventional telephone devices of this type, each time a call is received from the telephone to which the telephone is set to be forwarded, a ringing tone is generated for a short period of time, making it very noisy. was there. In some cases, the user may accidentally pick up the handset due to the ringing tone, which is extremely inconvenient.

The present invention eliminates the above-mentioned drawbacks of the conventional technology, and only when a call is made using a telephone that has been set up to forward calls in advance, the user of the telephone can receive a call that has been set up to forward calls in advance. The purpose of the present invention is to provide an excellent telephone device that notifies users of the following information.

Means for Solving the Problems In order to achieve the above object, the present invention provides a special dial tone sending circuit for sending out another special dial tone in addition to a dial tone sending circuit for sending a dial tone indicating dial permission. , when an off-hook operation is performed to make a call using a telephone set for forwarding in advance, the special dial tone is output from the telephone.

Therefore, according to the present invention, when an attempt is made to make a call using a telephone set in advance for forwarding, a special dial tone different from the dial tone indicating permission to dial is output from the telephone. By outputting a special dial tone, it can be easily determined that the telephone has been set for forwarding.

Embodiment FIG. 1 is a schematic configuration diagram of an embodiment of the telephone device of the present invention, in which 1 is a switching device, 2 is a central control device, and 3 is a switching device.
4 is a main storage device, 4 is a subscriber scanning circuit, 5 is a special dial tone sending circuit, 6 is a ring tone sending circuit, 7 is a dial tone sending circuit that sends out a normal dial tone indicating dial permission, 8 to 1O are subscriptions. 11 to 13 are telephones.

In the above embodiment, when telephone 12 goes off-hook,
This is detected by the central controller 2, and the call information table in the main memory 3 is searched. If forwarding has not been set in advance on telephone I2, the flag area of the call information table will be "
Therefore, in this case, the normal dial tone is sent to the telephone 12 from the dial tone sending circuit 7 which sends out a normal dial tone. Therefore, in this state, by dialing the telephone number of another telephone using the telephone 12, it is possible to call the other telephone and establish a state in which both parties can communicate in the same way as with a normal telephone device.

Assume that all telephones 12 are to be set in advance so that incoming calls to telephone 12 are transferred to telephone 13. In this case, with the telephone 12 off-hook and a normal dial tone being sent to the telephone 12, a predetermined specific operation (for example, pressing a special button or a specific number button, etc.) Do the following. In this way, the central controller 2 detects the operation, and the flag storage area corresponding to the telephone 12 provided in the call information table in the main memory 3 is
- is memorized. Then, when the telephone number of the telephone to be transferred (in this case, telephone 13) is inputted on the telephone 12, this is similarly detected by the central control unit 2 and corresponds to the telephone 12 set in the call information table in the main memory 3. The telephone number of the transfer destination telephone 13 to which the transfer is desired is stored in the telephone number area of the transfer destination telephone.

In this way, at the telephone 12, the forwarding destination telephone 13
It is assumed that a call is then made from telephone 11 to telephone 12 with the above setting. When the telephone 11 is off-hook and the telephone number of the telephone 12 is dialed, the central control bag fi12 detects this and sends the flag area 1 transfer light corresponding to the telephone 12 in the call information table in the main memory 2. Search each phone number area. The flag area and forwarding destination telephone number area corresponding to the telephone 12 in the call information table in the main storage device 2 are each filled with "1" as described above.
Since the telephone number of the forwarding destination telephone 13 and the forwarding destination telephone 13 are stored, the central control unit 2 thereby causes the telephone 13 to receive the call from the telephone 12 . That is, in this state, the ringing tone from the ringing tone sending circuit 6 is sent to the telephone set 13, and the telephone set 13g4 responds to this and the telephone set 13
When the telephone 13 and the telephone 11 are taken off-hook, the telephone 13 and the telephone 11 become available for communication.

Next, with the telephone set 12 set in advance to forward incoming calls to telephone number 3,
Assume that the telephone 12 is taken off-hook. In this case, the off-hook of the telephone 12 is detected by the central control unit 2, and a special The special dial tone is sent to the telephone set 12 by a special dial tone sending circuit 4 that sends out a dial tone. Therefore, phone 1
2, if a special dial tone is heard, it is easy to know that the telephone 12 is in the process of being forwarded. In addition, the phone must be configured so that when a special dial tone can be heard, even if the phone number of another phone is dialed, the phone will not be able to make a call between that phone and the other phone. It goes without saying.

As described above, according to the above embodiment, when a telephone set for forwarding is set in advance and the telephone goes off-hook, a special dial tone different from the dial tone indicating permission to dial is sent to the telephone. become,
It can be easily determined by the special dial tone that the telephone is in the process of setting forwarding.

Effects of the Invention As is clear from the above embodiments, in the case of a telephone set in advance for forwarding, when the telephone goes off-hook,
A special dial tone, which is different from the dial tone indicating dial permission, is arranged to be sent to the telephone at that stage, so that, according to the invention, when the telephone is taken off-hook, the special dial tone is This notifies you that the telephone is being set up for forwarding, so even if you forget that forwarding is being set up and take the telephone off-hook, you can easily know that it is. Further, according to the present invention, unlike the conventional case, the ringing tone does not sound every time there is an incoming call, so there is no need to worry about the ringing tone.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of an embodiment of the telephone device of the present invention, FIG. 2 is a schematic configuration diagram of a conventional telephone device, and FIG. 3 is a schematic diagram of a call information table in the main memory used in the same device. It is an explanatory diagram. DESCRIPTION OF SYMBOLS 1... Switching device, 2... Central control unit, 3... Main storage device, 4... Subscriber scanning circuit, 5......・Special dial tone sending circuit,
6...Ring tone sending circuit, 7...Dial tone sending circuit, 8~lO...Subscriber circuit,
11-12...Telephone. Name of agent: Patent attorney Toshio Nakao and one other person Figure 1

Claims (1)

[Claims] In addition to the dial tone sending circuit for sending a dial tone indicating permission to dial, a special dial tone sending circuit is provided to send a special dial tone, and when the phone is set for forwarding in advance, only when the phone goes off-hook. A telephone device configured such that the special dial tone is sent out from the special dial tone sending circuit.