JPH063955B2 - Call forwarding method - Google Patents

Description

The present invention relates to a call forwarding system, and more particularly to a call forwarding system in a switching system in which a telephone number is given to each individual.

[Conventional technology]

Generally, in telephone exchange, a telephone number is given to a telephone and the other telephone is called by dialing this telephone number, but recently, especially in an office or the like, a telephone number is given to each person and 2. Description of the Related Art A telephone exchange system is used in which an individual individually designates a telephone set that he wishes to receive an incoming call (hereinafter referred to as registration) and dials a personal telephone number to receive an incoming call at the registered telephone set. To register a telephone in this exchange system, a method such as making a specific dial for registration from a telephone that wants to receive a call or inserting a registration card into the telephone is used. If the caller does not have to be aware of the location of the other party, the caller does not have to consider the call forwarding by immediately dialing the telephone number of the called party by dialing the telephone number.

[Problems to be solved by the invention]

However, in the above-mentioned exchange system, if you register earlier and do not register a new one, you will always receive an incoming call at a previously registered phone, call the nearest person of the previously registered phone, or make a call. Has the inconvenience that it takes time for the person to find the other party.

An object of the present invention is to set a home telephone at the time of an incoming call for each individual, and in consideration of the fact that the registration operation of the transfer destination relies on human beings, the accuracy of the registration in real time cannot be guaranteed,
Even if the transfer destination is registered, one party can make an incoming call connection to this home telephone and transfer to the registered transfer destination after the transfer request from the responder, thereby alleviating the above-mentioned inconvenience caused by registration and release. It is to provide a call forwarding method.

[Means for solving problems]

According to the present invention, the line circuit number of the home telephone is semi-fixedly recorded in the storage device of the exchange processing device in correspondence with the telephone number of each individual, and the line circuit number of the transfer destination telephone is recorded as a set. Is provided with a first recording table. Further, in the storage device, there is provided a second recording table in which an area for recording an idle state and a personal telephone number of the called party during the call connection processing is provided for each line circuit number. Therefore, first, when the person having the personal telephone number A registers the home telephone of the person having the personal telephone number B as the transfer destination in the exchange, the line circuit number of the transfer destination telephone is recorded in the first recording table. In this registration method using a dial, for example, by sending the own personal telephone number A and the personal telephone number B of the forwarding destination to the exchange, a special number for designating the transfer destination is used. The line circuit number corresponding to the home telephone of the personal telephone number B is read from the recording table, and this number is recorded in the area for recording the transfer line circuit number of the personal telephone number A.

Then, when the exchange requests the telephone number A, the exchange reads the line circuit number of the home telephone from the first record table, and if this line circuit number empty state in the second record table is empty, this state is set. Instead of blocking, the personal telephone number A is recorded in the personal telephone number area of the called party, and an incoming connection is made to this line circuit number by a usual method. Then, when the answering party of the called telephone hears the called party name from the other party and, if not present, requests the transfer to the exchange, for example, by operating a specific dial following hooking, the exchange requests the transfer request from the second record table. Read the called party's personal telephone number for the received line circuit number. Next, the line number of the transfer destination registered for this personal telephone number is read from the first recording table, and the empty state of the line circuit number of this transfer destination in the second recording table is confirmed to confirm that it is empty. If so, record the called party's personal telephone number in the called party's personal telephone number area for this transfer destination line circuit number, and empty the second record table for the previously connected transfer source line circuit number. The blocked state is emptied, the personal telephone number of the called party is erased, and the connection to the transfer destination line circuit number is changed. Then, the transfer destination responds, and if the transfer request is made in the absence of the person again, the exchange receives the request and the first telephone number based on the personal telephone number of the called party recorded in the second recording table. The line circuit number of the home telephone is obtained from the correspondence shown in the record table, and the home telephone is connected again. With the above operation, even if the transfer destination is registered, the call is received at the home telephone first, and the responder can transfer it by a simple operation without being aware of the transfer destination of the absentee. However, there is almost no annoyance with the registration destination. Further, the transfer destination record is switched to a new registration at the next registration, and the transfer destination can be deleted by registering his / her telephone number.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a block diagram of an exchange to which an embodiment of the present invention is applied, and FIGS. 2 and 3 are allocation diagrams of a configuration example of two tables provided in a storage device of the exchange of FIG. . In FIG. 1, a plurality of telephones a, telephones b ... (TELa, TELb ...) Capable of making a transfer request and registration of a transfer destination with respect to the exchange respectively detect a transfer request from the telephones. Are connected to a call switch (hereinafter SW) via line circuits a, b ... (hereinafter LCa, LCb ...)
.. and SW are connected to an exchange processing device (hereinafter, CPU) via a bus. The CPU is composed of a control device, a storage device, etc., like an ordinary electronic exchange.
Exchange control is performed by the stored program control method. In the allocation diagram of FIG. 2 (hereinafter referred to as Table 1), for each personal telephone number given to each individual who uses the telephone of this exchange, the line circuit number (hereinafter referred to as HLCNO.) Corresponding to the home telephone is transferred. An area for recording the line circuit number (hereinafter referred to as TLCNO.) Corresponding to the destination telephone is provided, and the personal telephone number and the HLCNO. The correspondence relationship with is recorded as basic data of the exchange process. In the allocation diagram of FIG. 2 (hereinafter referred to as Table 2), the idle state and the personal telephone number of the called party during the call connection process are recorded for each line circuit number (hereinafter referred to as LCNO.). . The TLCNO. The registration is done by a method similar to the conventional registration of the call forwarding destination in which the special telephone number and the forwarding telephone number are dialed from any telephone to the exchange.

FIG. 4 is a flowchart when an incoming request is made to the personal telephone number I, and FIG. 5 is a flowchart when a transfer request is made from the home telephone TELf of the individual telephone number I or the transfer destination TELb of the personal telephone number I. The transfer operation will be described below with reference to FIGS. 4 and 5.

First, when there is an incoming call request to the telephone number I, the CPU makes a table 1
Referring to the line in which I is recorded in the personal telephone number of HLCNO. (Step), and then the LCNO. The line in which f is recorded (hereinafter line f)
Is checked to see if the open / closed state is empty "0" (step). If it is free as a result, the empty state of row f of table 2 is closed and changed to "1", and I of the personal telephone number of the called party is recorded in row f (step). Next CP
U makes an incoming connection to LCf according to the usual method. As a result, TELf is called and the responder talks with the other party.
If the empty block state is closed in step, a normal busy connection is made.

Thereupon, the answerer knows that the called party is I, but if I is absent, the answerer follows the method of requesting transfer of this exchange, for example, performs hooking and then operates a specific dial number to transfer the call. Request. When LCf of the exchange detects the transfer request, the CPU obtains I of the called party's personal telephone number from row f of table 2 (step. Next, referring to row I of table 1, the TLC NO. Is registered. Is checked (step), and if there is a TLCNO., B is obtained from this TLCNO. (Step. Next, f of LCNO. Which detected the transfer request and TLCN obtained)
O. Check whether or not b is different (step). Therefore, if they are different, it is determined as the transfer to the transfer destination, and b in Table 2
Refer to the line to check if it is empty and free (step). If there is an empty space, the empty / closed state of row b of Table 2 is changed to closed, and I is recorded in the personal telephone number of the called party (step). Next, "0" indicating that there is no space is written in the empty / occluded state of row f of Table 2, and "0" indicating that there is no call being connected is written to the personal telephone number of the called party (step). The CPU then switches the connection to LCf to the connection to LCb according to the usual method. By the way, the LCNO. And TLCNO. b is the same, the LCNO. Is actually the LCN already transferred
O. b. At this time, the HLCNO. To obtain f (step).
Next, referring to row f of Table 2, it is checked whether or not the empty / occluded state is empty (step). If there is an empty space, the empty state is closed and the personal telephone number I of the called party is recorded (step). Next, the empty state and the personal telephone number of the called party in row b of Table 2 are rewritten to "0" (step). The CPU then switches the connection to LCb to the connection to LCf according to the usual method. In the step, TLCNO. When there is no line, when the line b is blocked in the step, and when the line f is blocked in the step, the busy tone for a fixed time is sent to the transfer request before the busy tone is sent. Return to the connection.

〔The invention's effect〕

As described above in detail, the present invention is an exchange system in which a telephone number and a home telephone are set for each individual. When an incoming call comes to an individual who has registered a transfer destination, the home telephone first receives the call, so that the registration can be forgotten. Even if there is, it is possible to prevent extra work on the registration destination and easily transfer from the transfer destination to the home phone, so even if the individual with the incoming phone number is absent, the home phone side or the transfer destination phone side can be quickly treated. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an exchange to which an embodiment of the present invention is applied, and FIGS. 2 and 3 are configuration examples of a table 1 and a table 2 provided in a storage device used in the exchange processing device of FIG. 1, respectively. FIG. 4, FIG. 4 and FIG. 5 are diagrams showing operation procedures at the time of receiving an incoming call and requesting a transfer to a telephone number registered for transfer in the exchange of FIG. 1, respectively. TELa, TELb to TELm ... Telephone, LCa L
Cb-LCm ... Line circuit, SW ... Communication path switch, CPU ... Exchange processing device.

Claims (1)

[Claims] 1. In a call forwarding system of a telephone exchange system in which a telephone number is assigned to each individual and an incoming telephone is assigned to one or more individuals, it corresponds to an incoming telephone assigned to each individual telephone number. A first table that stores a line circuit number and a line circuit number corresponding to the transfer destination telephone set that has been registered for transfer, and a table for each called line circuit number of the called party who is in an idle state and a call is being processed. A second table storing a personal telephone number and referring to the first table at the time of an incoming call request to obtain a line circuit number corresponding to the personal telephone number requested to make an incoming call and connect to the incoming telephone. In addition, the line circuit number line of the second table is closed to an empty state, and the requested personal telephone number is written in the personal telephone number of the called party, and the connection is performed. When a transfer request by a predetermined hooking and a specific dial operation is received after the response of the receiving telephone, the second table is referred to and the called call written in the line circuit number line corresponding to this receiving telephone is received. When the line circuit number of the transfer destination is stored in this personal telephone number line, the line circuit connected before is obtained by referring to the first table. An unattended transfer method characterized by switching to a line circuit for transfer, and updating the idle state and the personal telephone number of the called party in the second table.