JPS6113854A - Display system of telephone transfer telephone number - Google Patents

Abstract

PURPOSE:To attain ease of correspondence for the case by storing a caller telephone number and a sender telephone number in a main memory of an electronic exchange, transferring both the telephone numbers to a transfer destination, displaying them to a numeral display device provided to the transfer destination and transmitting a call signal to a telephone set of the transfer destination. CONSTITUTION:When a calling telephone set TELa makes a call to a called telephone set TELb, a central controller CC of an electronic exchange EX acquires one side of a called control block CDB and stores the telephone number of the telephone set TELa to a caller telephone number storage area I of the call control block CDB and the telephone number of the telephone set TELb to a called party telephone number storage area II respectively. When the call is transferred to a telephone set TELc by the variable absence transfer service in this case, the telephone number of the telephone set TELc being a call transfer destination is stored in the called party telephone number storage area II and the telephone number of the called telephone set TELb is stored to a sender telephone number storage area III respectively. The content stored in the caller telephone number storage area I and the sender telephone number storage area IIIis transmitted to the telephone set TELc via a telephone line LINE.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an electronic exchange equipped with an information storage memory and a telephone equipped with a numeric display device, and particularly relates to a display method of a forwarding telephone number when a forwarding service is provided. It is related to.

[Conventional technology]

One of the services provided by conventional electronic exchanges is variable call forwarding service. This variable call forwarding service means that if a subscriber contacts the electronic exchange before leaving the phone due to reasons such as going out, future calls to the subscriber will be automatically routed to another predetermined phone. This is a service that transfers files automatically.

For this reason, an information storage memory is installed in the electronic exchange and a numeric display device is installed in the forwarding destination telephone, so that when a subscriber requesting variable call forwarding service receives a call, a predetermined number is displayed. At the same time as the call is transferred to the telephone set, the caller's telephone number is stored in the information storage memory, and this telephone number is displayed on the numeric display device of the forwarding destination.

[Problem that the invention seeks to solve]

In the above conventional system, after the subscriber to whom the call is transferred picks up the telephone, the telephone number of the caller is displayed on the numeric display. Therefore, the subscriber at the forwarding destination does not know whether the call that is currently ringing is a forwarded call or a direct call, and to whom the call is being forwarded. It had the drawback of being unclear.

The present invention eliminates the above-mentioned drawbacks of the conventional system, and stores the calling party's telephone number and the called party's telephone number dialed by the calling party in an information storage memory, and when transferring the call, the telephone number of the forwarding destination is stored. It is an object of the present invention to provide a forwarding phone number display system that improves the convenience of users and improves services by displaying such phone numbers on a numeric display device.

[Means for solving problems]

A means for solving the problem is to equip an electronic exchange having a transfer service function with a memory for storing telephone number information and a processing function to send the stored information to a telephone set, and to equip the telephone set with a numeric display device. , stores the calling party's phone number and the transfer source's phone number in the memory, and when transferring the call, sends both phone numbers to the transfer destination phone and displays them on the numeric display device, and then calls the phone. This is achieved by displaying the telephone transfer number that sends the signal.

[Operation] According to the present invention, the calling party's telephone number and the transfer source's telephone number are stored in the main memory of the electronic exchange, and these two telephone numbers are transmitted to the transfer destination and set at the transfer destination. The call signal is displayed on the numeric display device located at the transfer destination, and then a call signal is sent to the destination telephone. This has the great effect of allowing the subscriber to answer the call after knowing in advance from whom the call to Gaen has been transferred.

〔Example〕

FIG. 1 is a schematic diagram showing an embodiment of a transfer telephone number display method according to the present invention.

In the figure, EX is an electronic exchange, cc is a central control unit, NW is a network, MM is a main memory, NSC is a telephone number transmission control unit, place a is a calling party's telephone, place b is a called party's telephone, L
INE is a telephone line, NDU is a numeric display device, R is a line switching section, SR is a signal reception section, SCT control section, NDC is a numeric display circuit, NDL is a numeric display tube, and c is a transfer destination telephone.

Telephone installations A, B, C, etc. are connected to electronic exchange EX, telephone installation B has registered the variable call forwarding service, and the forwarding destination is telephone installation C with numeric display device N and DU. Suppose there is.

When telephone installation A (caller) makes a call to telephone installation B (called party), electronic exchange EX stores the telephone number of calling telephone operator A and the telephone number of called telephone operator B in its main memory. Store in MM.

If the call is transferred from the called telephone operator B to the telephone installation C, the phone number of the calling telephone operator A and the telephone number of the called telephone operator B stored in the main memory MM are read out and the telephone number is The sending control unit NSC sends the signal to the telephone installation c side via the telephone line LINE, and then sends out a calling signal.

On the telephone I/C side, the telephone line LINE is connected to the signal receiving section S by the switching contact of the line switching section R in the numeric display device NDU.
Connected to R. Therefore, the telephone number sent from the electronic exchange EX is received by the signal reception unit SR and sent to the control unit SCT.
sent to.

The control unit SCT drives the numeric display circuit NDC to display the telephone number of the calling telephone operator a and the telephone number of the called telephone operator b on the numeric display tube ND.
After displaying on L, a switching signal is sent to line switching section R. The line switching unit R receives this switching signal and switches the telephone line L.
Connect telephone connection c to IN and E.

At this stage, a call signal is sent from the electronic exchange EX, so the telephones A and C can pick up the handset after seeing the telephone number displayed on the numeric display device NDU.

FIG. 2 shows an example of the telephone number storage format in the main memory MM in the above embodiment.

As shown in FIG. 2 (al), in the call control block CDB of the main memory MM, a caller telephone number storage area I,
Called party phone number storage area■ and transfer source phone number storage area■
will be established.

When a call is made from a calling telephone operator a to a called telephone operator b, the central control unit CC of the electronic exchange EX
captures one side of the call control block CDB of the main memory MM, and stores the telephone number of the telephone installation a in the calling party telephone number storage area I of the call control block CDB as shown in FIG. 2 tb+. The telephone number of telephone station b is stored in the number storage area (■). At this time, the transfer source phone number storage area ■ is empty.

At this time, when the call is transferred to telephones I and C by the variable call forwarding service, the telephone number of telephone operator C of the call forwarding light is stored in the called party's telephone number storage area ■, as shown in Figure 2 fcl. , the telephone numbers of the called telephones m and b are stored in the transfer source telephone number storage area (2), respectively.

As mentioned above, the contents stored in the calling party telephone number storage area 1 and the transfer source telephone number storage area ■ are transmitted to the telephone number transmission control unit NSC.
The message is sent to the telephone equipment c side via the telephone line LINE.

FIG. 3 is a schematic diagram showing another embodiment of the transfer telephone number display system according to the present invention.

The difference between the example in Fig. 3 and the case in Fig. 1 is that the signal line LINEa for transmitting the telephone number is provided separately from the telephone line LINE, and in this case there is an advantage that the line switching section R is not required. be. The numeric display device NDUT in this case does not require a line switching section R as shown.

〔Effect of the invention〕

As explained in detail above, according to the present invention, the caller's phone number and the transfer source's phone number are displayed on the numeric display device, and then the caller sounds, so the transfer destination can place the call before making the call. This has the great effect of making it easier to take appropriate action depending on the situation since both the telephone number of the recipient and the telephone number of the transfer source can be visually checked.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of a transfer telephone number display method according to the present invention. FIG. 2 shows an example of the telephone number storage format in the main memory MM in the above embodiment. FIG. 3 is a schematic diagram showing another embodiment of the transfer telephone number display system according to the present invention. In the figure, EX is an electronic exchange, CC is a central control unit, NW is a network, MM is a main memory, NSC is a telephone number transmission control unit, location a is a calling party's telephone, location b is a called party's telephone, and L
'I N E is the telephone line, NDU is the numeric display unit, R is the line switching unit, SR is the signal reception unit, SCT control unit, NDC
is a numeric display circuit, NDL is a numeric display tube, T E L c
is a destination telephone, CDB is a call control block, NDUT is a numeric display device according to another embodiment of the invention, and LINEa is a signal line. Figure 1

Claims (1)

[Claims] An electronic exchange having a transfer service function is equipped with a memory for storing telephone number information and a processing function for transmitting the stored information to a telephone set, and the telephone set is equipped with a numeric display device, and the memory is equipped with a caller telephone number and a processing function for transmitting the stored information to a telephone set. A telephone characterized in that a transfer source telephone number is stored, and when a call is transferred, both of the telephone numbers are sent to the transfer destination telephone and displayed on the numeric display device, and then a calling signal is sent to the telephone. Display method of forwarding phone number.