JPH0258498A - Key telephone system - Google Patents

Abstract

PURPOSE:To specify a call-arriving destination from received call-arriving destination information and to respond even when a caller does not know the change of call-arriving designating information by providing a specifying means to specify the call-arriving destination from the received call-arriving destination designating information. CONSTITUTION:When a call arrives at line wire 3 from an ISDN network 2, an extension telephone 5 is specified from call-arriving designating information and circuit exchange is executed. That is, when an extension number is changed due to seat changing, etc., a new arriving subaddress (extension number) is known from a table to indicate the corresponding relation of the existing call- arriving destination designating information (arriving subaddress) and the new arriving subaddress, and call-arriving request is executed to the extension telephone 5. Thus, when a caller does not know the change of the call-arriving destination designating information, a call-arriving destination is specified from call-arriving information and responding can be executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a button telephone system, and particularly to a button telephone system that specifies a called party from called party designation information.

[Prior Art] In a key telephone system compatible with the 15DN network, the called destination designation/ti report is often used as an extension telephone number of the conventional key telephone system due to its meaning.

[Problems to be Solved by the Invention] However, in the above example or in the conventional key telephone system, when an extension number is specified directly from an outside line (for example, DID dial-in dialing), the extension number may change seats. etc., there was a drawback that the caller could end up getting the call to a different person than the one expected.

The present invention was made to solve the above problems, and
To provide a button telephone system in which a caller identifies a called party from received called party information and responds even if the calling party does not know that the called party designation information has been changed.

[Means for Solving the Problems] In order to achieve the above object, a button telephone system of the present invention has the following configuration. That is, in a button telephone system having a main device and at least two or more dedicated telephones and in which a caller can specify a called party using called party specifying information, a receiving means for receiving called party specifying information; and identifying means for identifying a called party from the called party designation information received by the receiving means.

[Embodiment] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[System Description (Fig. 1)] Fig. 1 is a block diagram of the key telephone system in this embodiment. , outside line 3 and extension 4
an exchange processing unit 11 that performs exchange processing with the extension telephone 5;
an extension trunk 12 that controls the system, and a memory 13 that has processing procedures of the exchange processing section 11 and various data areas, which will be described later.
It consists of When a call arrives from the 15DN network 2 to the outside line 3, the extension telephone 5 is specified from the called destination designation information and line switching is performed. In this embodiment, the maximum number of connectable extensions is "8".

FIG. 2 is an example of the specifying means in this embodiment, and is a table showing the correspondence between the conventional called destination designation information (R subaddress) 20 and the new young subaddress 21. For example, when there is an incoming call to the main device 1, the called subaddress = “3
”, it learns that the new young sub-address (extension number) corresponding to the old sub-address = “3” is “6” from the above table, and the extension phone with the old sub-address (extension number) = “6” is received. 5 makes an incoming call request. After that, the process is similar to the DID processing of a conventional key telephone.

[Description of Processing Procedure (FIG. 3)] Next, the processing procedure of the exchange processing unit 11 in this embodiment will be described below with reference to the flowchart shown in FIG. Note that in this embodiment, the processing of the extension telephone 5 is the same as the conventional processing, so a description thereof will be omitted.

First, the main device 1 in this embodiment is started, and for example,
If the destination sub-address (extension number) changes due to a change of seats, etc., and it is necessary to create a new corresponding destination sub-address table, the extension number is input from the system console 14. In step SIO, a table setting command is input from the system console 14, and then the extension number corresponding to the destination sub-address is entered manually, and the table shown in FIG. 2 is set. Then, when the end code is input, the process advances to step 512 and enters a state of waiting for an incoming call to the outside line 3.

Thereafter, if there is an incoming call, it is determined in step S14 whether a called subaddress is set in the incoming call request message, and if so, the called subaddress is loaded in step 516. In step 518, it is checked whether the loaded destination sub-address is correct as the old destination sub-address. If it is correct, in step S20, a new stone sub-address is searched based on the old and young sub-addresses from the correspondence table of new and old destination sub-addresses.

Next, in step S22, a call termination request is made to the extension telephone 5 connected to the extension 4 using the new destination subaddress as the destination extension number.

Then, in step 526, when the extension trunk 12 detects an off-hook response from the ringing extension telephone 5, the incoming call request is stopped, a communication path is formed within the exchange processing section 11, and the communication state is established.

On the other hand, if it is determined in step S14 that no young sub-address is set in the incoming call request message, or if the incoming sub-address received in step 518 is incorrect, all extensions connected to extension 4 are checked in step S24. An incoming call request is made to telephone m5. Then, in step 526, the extension telephone 5 that responded first is shifted to the above-mentioned talking state, and the process ends.

According to this embodiment, even if the called sub-address (extension number) is changed without notifying the outside person of the change, the outside person can make a call to a desired person.

[Other Embodiments] In the second embodiment, the extension number that is the transfer destination is stored in advance in the memory area of the extension telephone 5, and when there is an incoming call request from the external line 3, the main device 1 receives the received incoming call request. A Wakaie request is sent from the subaddress to the extension telephone 5 that is the destination of the call. Then, the extension telephone 5 instructs the main device 1 about the extension number of the new destination, and the main device 1 automatically transfers the call to the extension telephone 5 of that extension number. Note that the transferred extension telephone 5 is
Since the transfer request is from an extension, respond without automatically transferring.

For example, when a call is received from the outside line 3 to the conventional extension number "1", a call request is output to the extension telephone 5 of the extension number "1".On the other hand, the extension telephone 5 which received the call request
So, the call request is from outside line 3, and the new extension number to which it will be forwarded is 8.

Since I know that it is, I automatically transfer the call to extension number ``'8°''. The extension telephone 5 with the transferred extension number "8" makes a normal response since the transfer request is from extension 4.

[Explanation of operation (FIGS. 4 and 5)] Next, the main device 1 and the inner Pi! The operation of the telephone set 5 will be described below in accordance with the flowcharts shown in FIGS. 4 and 5.

First, the main device 1 in this embodiment is started, and for example,
If the destination sub-address (extension number) changes due to a change of seat, etc., the extension number to which the call will be transferred is input to each extension telephone 5 from the system console 14 and notified. Step S3
0, the transfer destination setting command is input manually from the system console 14, and then the transfer destination number is input and sent to each extension telephone 5. Then, when the end code is entered manually, the process advances to step S32, and the process enters a state of waiting for an incoming call to the outside line 3. Thereafter, if there is an incoming call, it is determined in step S34 whether a young sub-address is set in the incoming call request message, and if so, the young sub-address is loaded in step S36. In step 538, it is checked whether the loaded destination sub-address is correct as the old destination sub-address, and if it is correct, in step S40,
An incoming call request from the outside line 3 is sent to the extension telephone 5 of the destination sub-address, and a transfer request from the extension telephone 5 is waited for. When the transfer request is received, in step S42, the extension telephone 5 sends an incoming call request to the extension telephone 5 connected to the extension 4 of the previously notified transfer destination extension number. Next, in step S46, when the extension trunk 12 detects an off-hook response from the ringing extension telephone 5, the incoming call request is stopped, a communication path is formed within the exchange processing unit 11, and the communication state is set to line 0.

On the other hand, if it is determined in step S34 that no called subaddress is set in the incoming call request message, or if the called subaddress received in step 338 is incorrect, all extensions connected to extension 4 are checked in step S44. An incoming call request is made to the telephone set 5. Then, in step S46, the extension telephone 5 that answered first is shifted to the above-mentioned talking state, and the even-fixing is ended.

Next, the operation of the extension telephone 5 will be explained.

In step S50, when receiving the forwarding destination number (incoming sub-address) at the time of incoming call from the main device 1 as described above,
The destination subaddress is stored in memory. Then, an incoming call request from the main device 1 is waited for in step S52, and when the incoming call request is received, in step S54, when the incoming call is received from the outside line 3,
It is determined whether a called subaddress is being received, and if the call is received from extension 4 or a forwarding destination number is not set, the process proceeds to step 358 and normal incoming call processing is performed, but if a middle destination number is set. If the call is received from outside line 3, a transfer request with a transfer number added is sent in step S56.

According to the second embodiment, the main device can perform incoming call processing in response to the called destination designation information from the calling party with a simple configuration.

It is also possible to provide the extension telephone 5 with a display device, display the called party on the display device, and transfer the call at the discretion of the responder.

In this embodiment, a key telephone system compatible with the 15DN network has been described as an example, but it is also possible to apply the present invention to a key telephone system compatible with a conventional analog telephone network having a DID function.

[Effects of the Invention] As described above, even if the calling party does not know that the called party designation information has been changed, the called party can be identified from the received called party information and a prompt response can be made.

[Brief explanation of the drawing]

Fig. 1 is a diagram of the button telephone system configuration in this embodiment, Fig. 2 is a diagram explaining the correspondence between the conventional sub-address and the new sub-address of the first embodiment, and Fig. 3 is a diagram of the main device of the first embodiment. 4 is a processing flowchart of the main device of the second embodiment; FIG. 5 is a processing flowchart of the extension telephone of the second embodiment. In the figure, 1... main device, 2... l5DN network, 3...
Outside line, 4...extension, 5...extension telephone, 10...
l5DN trunk, 11...exchange processing unit, 12...
・Extension trunk, 13...memory, 14...system console. Figure 2

Claims (4)

[Claims] (1) Receiving means for receiving called destination designation information in a button telephone system that has a main device and at least two or more dedicated telephones and allows the caller to specify the called destination using the called destination designation information. and identifying means for identifying a called party from the called party specifying information received by the receiving means. (2) The button telephone system according to claim 1, characterized in that the main device includes the identifying means, and the called destination is specified using a rewritable called destination designation information table. (3) The dedicated telephone is equipped with the identification means and a storage means for storing the forwarding destination, and the called destination is specified as the forwarding destination stored in the storage means in response to an incoming call instruction from the main device. The button telephone system according to claim 1. (4) A dedicated telephone is provided with the above identifying means and a display means for displaying called party designation information, and the responder determines and identifies the called party from the called party designation information displayed on the display means. The button telephone system according to claim 1, characterized in that: