JPH0198360A - Absence transfer system for automatic exchange - Google Patents

Abstract

PURPOSE:To eliminate the limitation of number of calling terminal equipments to be subjected to absence transfer by applying absence transfer when an additional dial number dialed by the caller and an additional dial number stored and registered by the called party are coincident. CONSTITUTION:When the connection to a terminal equipment 21 is requested by the operation of a terminal number by a caller, a register 30 receives the terminal number and transfers it to a central controller 40. The central controller 40 reads an area of a terminal setting data 54. In this case, in detecting absence transfer, the central controller 40 reads the terminal setting data 55 to confirm the additional dial number and to send the absence notice signal to the caller. Thus, when the caller applies additional dial, the central controller 40 compares the additional with the additional dial number registered in the setting data 55 and when they are coincident, the number of absence transfer destination is read from the terminal setting data 56 to apply absence transfer.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a call forwarding system in an automatic switchboard.

(Prior Art) Conventionally, in the call forwarding system in this type of automatic exchange, the call forwarding setting registration is stored by a predetermined operation from one notification terminal, thereby enabling the call forwarding. In the call forwarding method, call forwarding is performed only when a call is received from a calling terminal that has been set and registered in advance.

Call forwarding may be performed for all callers.

Automatic switching systems typically have a central controller that uses programs and data in main memory to control the switching connections of the main switches.

If the communication terminal performs a predetermined operation to set and register call forwarding, the central control unit of the automatic switchboard stores the terminal number of the communication terminal dialed by the caller in the terminal data storage area of the main memory. The search is performed, and the registration of settings for call forwarding is indexed in the storage area of the searched terminal number. Here, it is searched to see whether or not the calling terminal number that you want to forward the call to is set, and if it is set, that is, in the former case, the calling terminal number that you want to forward the call to is the RF number that you want to forward the call to! Only when there are few calls from one terminal, the settings are registered in the terminal data storage area of the main storage device, and the call is forwarded to the destination terminal. When this happens, an absence notification signal is sent.

In the latter case, the call is transferred to the destination terminal of the call destination, which is registered in the terminal data storage area of the main storage device, for all the terminals that made the call.

(Problems to be Solved by the Invention) In the conventional call forwarding system, when setting the calling terminal number for call forwarding, the terminal number must be set every time call forwarding is set up. Another drawback is that there is a limit to the total number of calling terminal numbers that can be set.

An object of the present invention is to enable call transfer by selecting a calling terminal without setting the calling terminals to be forwarded in advance in a predetermined area, and to limit the number of calling terminals to be forwarded. An object of the present invention is to provide a call forwarding system for an automatic exchange that simplifies registration operations and does not cause problems.

(Means for Solving the Problems) In order to achieve the above-mentioned purpose, the present invention provides a call forwarding method for an automatic switchboard having call forwarding and absence notification service functions, in which the terminal data in the main storage device is An area for setting additional dial numbers is provided for each line location in the storage area, and when an additional dial number is sent from a terminal that is registered for call forwarding,
The additional dial number 1 is stored in the corresponding area, and if the terminal registered for call transfer is damaged, an absence notification signal is sent to the calling terminal.

After that, one calling terminal dials an additional dialing number, and when this additional dialing number matches the additional dialing number stored in the corresponding area, the incoming call is transferred to the terminal of the call forwarding destination; It is configured to send the absence notification signal again.

(Example) Hereinafter, the present invention will be explained in more detail with reference to the drawings.

FIG. 1 is a functional block diagram illustrating an embodiment of an automatic call forwarding system according to the present invention.

In the figure, the main switch 10 has main switch terminals A and B.
, and C1 and communication terminals 21, 22, and 23 via interfaces 24, 25, and 26, respectively. Also, the digital connectors 30 are accommodated and connected and exchanged and connected to each other.

The central controller 40 has interfaces 24, 25 and 26 . It is coupled with the register 30 and the main memory 50 to exchange data information and control the exchange connection of the main switch 10.

The main storage device 50 is located at line 5 as a terminal data storage area.
Corresponding to line status 52.1. Fixed data (terminal number) 5
3 and terminal setting data (data, additional dial number, call forwarding destination terminal number) 54, 55, and 56, respectively.

In the line status 52 area, statuses such as line blockage are recorded as the line status changes.

The fixed data 53 area is a data area written in advance by a maintenance person or a driver, and includes a terminal number corresponding to the position of the terminal line 51.

The area of terminal setting data 54 includes terminals 21, 22 and 2.
Function data set by dial operation is registered from 3 onwards.

The area of terminal setting data 55 includes terminals 21, 22 and 2.
From 3 onwards, additional dial numbers set by dialing are registered.

The area of terminal setting data 56 is for terminals 21, 22 and 23.
The terminal number of the call forwarding destination is registered in the terminal setting data 54 in the data area set by the dial operation.

The data of each of the terminals 21, 22 and 23 is stored in the terminal data storage area of each of the line positions A, B and C of the lines connected to the main switch terminals A, B and C. Terminal numbers 1234.5678 and 9012 are registered and stored in the areas of fixed data 53 corresponding to terminals 21, 22 and 23, respectively.

Next, with reference to FIG. 1, the operation and operation when the terminal 21 sets call forwarding will be described.

When the central control unit 40 detects the call from the terminal 21 at line position A via the interface 24t.

The line status 5 of the person who accessed the main storage device 50 and located the 1st line
The data in area 2 is changed from an empty state to a calling state, and the main switch terminal's accommodation line is connected to the register 30 via the main switch 10.

When the register 30 receives the call forwarding dial code 90, it forwards it to the central controller 40. The central controller 40 analyzes the transmitted nine numbers.

If it is determined that it is a missed call forwarding registration, it accesses the main storage device 50 and registers "missed forwarding" in the area of the terminal setting data 54 corresponding to the person on the first line.

Control is performed to transmit a successful child completion signal to the calling terminal 21.

Next, when the register 30 receives a dial code 91t for registering an additional dial number, it transfers it to the central control unit 40. When the central controller 40 determines that additional dial number registration is required, the central controller 40 controls to transmit a registration enable signal to the calling terminal 21.

The caller who confirms the registration possible signal will receive an additional dial number rl
LJ? When the dial is operated, the additional dial number "11" is stored in the register 30 through the main switch terminal accommodation line and the main switch 10t, and is transferred to the central control unit 40. When the central control unit #L40 receives the additional dial number, it accesses the main memory 50t, stores it in the area of unset data 55 corresponding to the line position person in r l l J', and issues a call completion signal. The data is controlled to be transmitted to the terminal 21. Next, when the register 30 receives the dial code 92t'' for registering the terminal number of the call transfer destination, the register 30 transfers it to the central control unit.

The central control unit 40 analyzes this number, and if it determines that the number is registered as the call forwarding destination terminal number, it sends the calling terminal 2 on the registration possible signal.
control to send to 1.

After confirming the registration possible signal, the caller then dials the call forwarding destination terminal number 1, for example r5678J, and the call forwarding destination terminal number is entered in the register 30 via the main switch terminal accommodating line and the main switch 10. It is stored and transferred to the central control device 40. When the central control unit 40 receives this number, it accesses the main storage unit 50, stores "5678" in the area of the terminal setting data 56 corresponding to the line position person, and controls to send a registration enable signal to the calling terminal 21. .

Next, the operation when there is an incoming call to the terminal 21 for which call forwarding and additional dial numbers have been set and registered will be described.

When the caller dials the terminal number r1234J to request a connection to the terminal 21, the register 30 receives the terminal number r1234J from the caller and transfers it to the central controller 40. The central control unit 40 thereby searches the area of the fixed data 53, and when it detects a person whose line position matches the terminal number r1234J, it reads the area of the terminal setting data 54 corresponding to the 1st line position A, and sets it as the data at the time of incoming call.
Detects registration of "call forwarding".

Furthermore, when the terminal setting data 55 is read and it is detected that an additional dial number is registered, the central control unit 40 controls the main switch 10t to send an absence notification signal to the caller.

At this point, the calling party is fully aware that the called party is absent, so the additional dial number r that the calling party has been informed of in advance
You will have to dial from llJt Yusong 23. As a result, a connection can be requested to the terminal of the missed transfer destination registered in the terminal setting data 56 corresponding to the line position A.

The register 30 is an additional dial number “11J” from the caller.
When all the information is received, it is transferred to the central control device 40.

The central controller 40 reads the entire additional dial number area of the terminal setting data 55 corresponding to the first line position A, and when it confirms that the read additional dial number matches "11", it reads the missed call forwarding destination of the terminal setting data 56. Terminal number r567
Read 8J'.

Then, the main switch 10 is controlled to send out a discharge signal to the main switch terminal BK, which is the absent transfer destination.

Once the central controller 40 receives the response from the terminal 22.

The main switch terminal B is connected to the caller, and the call is transferred from the terminal 21 that has set the call forwarding to the terminal 22 that is the call forwarding destination.

A case will be explained in which the caller dials "12" as an additional dial number from the terminal 23 and requests a connection to the terminal of the call forwarding destination registered in the terminal setting data 56 corresponding to line position A. do.

Register 30 is the additional dial number "12" from the caller.
When received, it is transferred to the central control device 4o.

The central controller 40 reads out the entire additional dial number area of the terminal setting data 55 corresponding to line position A. However, the read additional dial number is "11" and r12
J does not match, so the central controller 40 is the main switch 10.
and sends an absent notification signal to the caller.

(Effects of the Invention) As explained above, in the call forwarding system according to the present invention, at the same time as setting and registering the call forwarding service function, the called party memorizes and registers an additional dial number, and one caller performs dialing operations. Since the system is configured so that call forwarding is performed only when the additional dial number and the additional dial number registered in the memory of the called party match, there is no need to set the calling terminal number for call forwarding. By informing the other party of the additional dial number in advance, there is an effect that the calling terminal can be selected for forwarding the call. Furthermore, in the past, settings had to be registered for each outgoing call to be forwarded.

According to the present invention, for a large number of calling terminals to be forwarded,
Since it is only necessary to set one additional dial number, the registration operation is simplified, and there is no restriction on the number of calling terminals to which calls should be forwarded.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a missed call forwarding system according to the present invention. FIG. 2 is a diagram showing an example of information stored in the main storage device of FIG. 1. 10...Main switch 21.22.23...Terminal 24.25.26...Interface 30...Register 40...Central control unit 50...Main storage device (terminal data storage area) Patent Applicant NEC Corporation Agent Patent Attorney Hisashi Inoro 21 Kei

Claims (1)

[Claims] In the call forwarding system of an automatic exchange that has call forwarding and call forwarding service functions, an area for setting an additional dial number is provided for each line position in the terminal data storage area of the main storage device, and call forwarding is registered. When an additional dial number is sent from a terminal, the additional dial number is stored in the corresponding area, and when a call arrives at a terminal registered for call forwarding, an absence notification signal is sent to the calling terminal; Thereafter, when the calling terminal dials an additional dialing number and this additional dialing number matches the additional dialing number stored in the corresponding area, the incoming call is forwarded to the terminal of the call forwarding destination; A missed call forwarding system for an automatic switchboard, characterized in that it is configured to send an absent notification signal again.