JP3175955B2 - Exchange system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switching system in which an auxiliary device having an automatic dialing function is connected to an extension.

[0002]

2. Description of the Related Art Conventionally, incoming calls from office lines or extensions are
There is a private branch exchange system having a private branch exchange having a transfer function for transferring an incoming call from an extension terminal to another office line or extension, and an auxiliary device connected to the extension of the private branch exchange.

In this conventional private branch exchange system, a certain extension terminal sets the transfer destination of the extension terminal to an auxiliary device, and when a certain terminal receives an incoming call to the extension terminal, the auxiliary device is absent. After transmitting a message indicating that there is a message to the caller, or transmitting a message indicating that the user is absent to the caller, instruct the transmission of the dialed number,
When the caller made a call in accordance with this, the call was transferred to the terminal having the dialed number.

[0004]

As described above, in the conventional private branch exchange system, if the extension terminal called by the caller is absent, if the extension terminal sets the transfer destination to the attachment device, the attachment device will If a message indicating absence is transmitted to the caller, or a message indicating absence is transmitted to the caller, and then the dialing number is instructed, and the caller dials again according to this The communication was transferred to the terminal having the dial number.

[0005] However, there are many cases where the transfer destination terminal is useless for the caller. Also, there is a trouble that the caller has to dial twice. Further, there is a problem that two lines for connecting to the attached device are required.

Accordingly, the present invention has been made in view of these problems, and provides an exchange system that allows a caller to connect to a target transfer destination and to eliminate the inconvenience of having to dial twice. The purpose is to provide.

[0007]

In order to achieve the above object, the present invention comprises an exchange accommodating a plurality of extensions and having a transfer function of transferring an incoming call from an office line or an extension to another extension. In the switching system, an auxiliary device connected to the exchange and an extension telephone connected to the extension of the exchange and capable of selecting the auxiliary device as a transfer destination of an incoming call from the extension are provided, and the auxiliary device is provided. Is
An automatic answering means for automatically receiving the incoming call when the incoming call is transferred from the extension telephone and transmitting a message prompting a selection of one of a plurality of preset destinations to a caller; When any one of the plurality of transfer destinations is selected by the operation of the source in response to the transmission of the message by the means, an automatic call is made to the selected transfer destination, and the incoming call is placed. Transfer control means for retransmitting to the selected transfer destination.

In the present invention, an auxiliary device is connected to the exchange, and the extension telephone connected to the extension is configured so that the auxiliary device can be set as a transfer destination. The transfer destination is set. Also,
When the incoming call is transferred from the extension telephone, the attached device automatically receives the incoming call and transmits a message prompting the selection of one of the plurality of transfer destinations set in advance to the caller. When one of the plurality of transfer destinations is selected by a source operation in response to the transmission, an automatic call is made to the selected transfer destination, and the incoming call is transferred to the selected transfer destination. Retransmit to. According to such a configuration, the caller can perform a selective transfer in which a desired transfer destination is selected from a plurality of transfer destinations and the transfer is performed.
In each extension telephone, the selective transfer can be realized only by setting the attached device as the transfer destination.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing one embodiment of the switching system of the present invention.

In FIG. 1, reference numeral 18 denotes a private branch exchange, 11,
12, 13, 14, 15, 16 are telephones, 17 is extension 1.
Is an auxiliary device connected to the private branch exchange 18 through
The private branch exchange 18 has a function of enabling an extension terminal to transfer an incoming call from an office line or another extension to the office line or extension. It is also assumed that the telephone 12 has a destination of the telephone 12 set in the attachment device 17.

FIG. 2 is a detailed block diagram of the attachment device 17.

In the accessory device 17 shown in FIG. 2, 2 is a control circuit, 3 is a signal detection circuit, 4 is a connection circuit, 5 is an automatic response circuit, and 6, 7, 8, and 9 are automatic dial circuits. A predetermined transfer destination dial number is set in each of the automatic dial circuits 6, 7, 8, and 9. Here, the configuration and operation of the attachment device 17 of FIG. 2 will be described in detail.

In FIG. 2, it is assumed that extension 1 is in an off-hook state. In this state, when the signal detection circuit 3 of the attached device 17 detects a call signal from the private branch exchange 18, the detection is notified to the control circuit 2. Upon receiving this notification, the control circuit 2 controls the connection circuit 4 to connect to the automatic response circuit 5, and at the same time instructs the automatic response circuit 5 to send a message. The automatic answering circuit 5 sends a response signal to the private branch exchange 18 via the extension 1 and, after completing the line setting, selects one of four preset destinations by pressing a special number. The designated message is sent to extension 1. At the same time, the control circuit 2 instructs the signal detection circuit 3 to detect the special number press signal transmitted via the extension 1 in response to the message. The signal detection circuit 3 detects the special number press signal in accordance with the instruction.

If the sender immediately sends a special number pressing signal after the automatic response circuit 5 sends a message, the signal detecting circuit 3 detects the special number pressing signal, and this special number pressing signal is notified to the control circuit 2. .

If the special number press signal is not sent via the extension 1 within a certain period after the message is sent, the control circuit 2 instructs the automatic response circuit 5 to send the message again.

When the control circuit 2 receives the special number press signal from the signal detection circuit 3, the control circuit 2 retrieves which of the automatic dial circuits 1-4 corresponds to the special number press signal and receives the signal. At the same time, the connection circuit 4 is controlled to be connected to the corresponding automatic dial circuit, and the hooking operation is executed.

When this connection and hooking operation is completed, the corresponding automatic dial circuit sends a dial signal and prepares for a response signal from the private branch exchange 18.

Subsequently, upon receiving a response signal from the private branch exchange 18, the control circuit 2 is notified immediately. When the control circuit 2 receives this information, it controls the connection circuit 4 to perform the transfer, and also disconnects the extension 1 to restore the initial state.

FIG. 3 is a flowchart according to FIG.
The operation of this embodiment will be described below with reference to the flowchart of FIG. 3 and FIGS.

In FIG. 1, when the telephone set 11 dials the telephone number of the telephone set 12 and calls the telephone set 12, the private branch exchange 18 which has received the call signal sets the transfer destination of the telephone set 12 to the attached device 17. Is recognized, and a call signal from the telephone 11 is transmitted to the attached device 17.
Send to When this signal is detected by the signal detection circuit 3 of the attached device 17 via the extension 1, the signal detection circuit 3
Notifies the control circuit 2 of this fact. Upon receiving this notification, the control circuit 2 instructs the automatic response circuit 5 to send a message through the connection circuit 4.

Then, the automatic response circuit 5 of the attachment device 17
Sends the message instructing the user to select one of the four destinations by pressing a special number from the preset four destinations to the telephone set 11 via the extension 1 and the private branch exchange 18 (step 301). In this case, the content of the message is, for example, "If you want to call the terminal 13, please dial 1." And
The control circuit 2 of the attachment device 17 instructs the signal detection circuit 3 to detect a special number press signal generated by pressing the special number of the telephone 11 transmitted from the telephone 11 via the extension 1. The signal detection circuit 3 detects the special number pressing signal in accordance with the instruction, and checks whether the telephone 11 has pressed the special number (step 302).

In step 302, after the automatic response circuit 5 sends the message, if the telephone set 11 immediately sends a special number press signal via the private branch exchange 18, the signal detection circuit 3 detects the special number press signal. The control circuit 2 is notified of the special number press signal, and proceeds to the next step 303.

If the special number pressing signal is not sent within a certain period after sending the message, the control circuit 2
Commands the automatic response circuit 5 to send a message again (steps 302 and 301).

The signal detection circuit 3 of the auxiliary device 17
When the control signal 2 detects the special number pressing signal sent from the control circuit 1, the control circuit 2 determines which of the four special numbers is the special number pressing signal, and the automatic dial circuit corresponding to the special number is automatically dialed. A search is performed to find out which of 6 to 9 is present (step 303).

As a result of the search, if the automatic dial circuit corresponding to the special number is, for example, the automatic dial circuit 6, the control circuit 2 controls the connection circuit 4 to connect the connection circuit 4 and the automatic dial circuit 5. At the same time, the automatic dial circuit 5 is caused to perform an off-hook operation.

When the off-hook operation is completed, the automatic dial circuit 6 sends a dial signal of the telephone number corresponding to the special number (step 304). Thus, an incoming call is made to the transfer destination indicated by the special number, for example, the telephone 13. Here, the automatic dial circuit 5 prepares for a response signal sent via the telephone 13 and the private branch exchange 18.
When the signal detection circuit 3 detects a response signal from the telephone 13 (in this case, an off-hook signal of the telephone 13) (step 305), it notifies the control circuit 2 of this fact.
When the control circuit 2 receives the request, the control circuit 2 controls the connection circuit 4 to perform transfer control, and connects the telephone 11 to the telephone 13 of the transfer destination selected by the telephone 11 (step 30).
At the same time as 6), the connection between the attachment device 17 and the private branch exchange 18 is released to restore to the initial state.

On the other hand, if there is no response signal in step 305, the accessory device 17 checks whether or not to re-operate the telephone 11 (step 307). If so, the process returns to step 301 to retransmit the message. If no re-operation is performed, the communication is disconnected (step 308).

[0029]

As described above, according to the switching system of the present invention, if the extension terminal sets the transfer destination of the extension terminal in the attached device, if the extension terminal called by the caller is absent, The caller can select one transfer destination from a plurality of transfer destinations.

Therefore, the caller can easily connect to the target transfer destination terminal.

When the caller presses the special number selected, automatic call connection is established, so that there is no need to dial again.

[Brief description of the drawings]

FIG. 1 is a block diagram of an embodiment of a switching system according to the present invention.

FIG. 2 is a detailed block diagram of the attachment device according to FIG. 1;

FIG. 3 is a flowchart according to FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Extension 2 ... Control circuit 3 ... Signal detection circuit 4 ... Connection circuit 5 ... Automatic response circuit 6,7,8,9 ... Auto dial circuit 11,12,13,14,15,16 ... Telephone 17 ... Attachment device 18 … Private branch exchange

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yuji Sasamoto 3-1-1 Asahigaoka, Hino-shi, Tokyo Toshiba Communication Systems Engineering Co., Ltd. (56) References JP-A-2-231852 (JP, A) JP Hei 3-108937 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04M 3/42-3/58 H04M 11/00-11/10 H04Q 3/58-3/62

Claims (1)

(57) [Claims] 1. An exchange system including a plurality of extensions and having an exchange having a transfer function of transferring an incoming call from an office line or an extension to another extension, comprising: an auxiliary device connected to the exchange; An extension telephone connected to the extension of the exchange and capable of selecting the attached device as a transfer destination of an incoming call from the extension is provided, wherein the attached device is provided when an incoming call is transferred from the extension telephone. Automatic response means for automatically receiving the incoming call and transmitting a message prompting the selection of any of a plurality of preset destinations to the transmission source; and transmitting the message in response to the transmission of the message by the automatic response means. When any of the plurality of transfer destinations is selected by the operation of (1), a call is automatically made to the selected transfer destination, and the incoming call is retransmitted to the selected transfer destination. Switching system characterized by comprising a control means.