JPS6276349A - Incoming refusal system - Google Patents

Abstract

PURPOSE:To attain an emergency communication by transmitting a call signal even to a terminal in which an incoming refusal is set in the receipt of a dial code of incoming refusal cancel set in advance from a caller. CONSTITUTION:A central processing unit 40, when an incoming call comes in, recognizes the incoming through an interface 20, and connects a register 31 to a calling circuit controlling a main switch 10. And it indexes a callee terminal number obtained through the register 31 at a terminal data storage area 51. When the setting and registration of the incoming refusal is performed, the processing unit 40 connects an additional register 32 controlling the main switch 10, and also, transmits an incoming refusal signal to a caller. Following that, it receives the dial code from the caller through the register 32 and decides whether it is the code of a refusal cancel or not. When it is the code of the refusal cancel, it calls the callee. Thereby, the emergency communication can be obtained even when the incoming refusal is set.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a call rejection system in an automatic exchange.

[Conventional technology]

In the conventional call rejection method, a single terminal number is assigned to each terminal line in which a communication terminal is accommodated in an automatic exchange, and a call rejection setting is registered for the terminal number assigned by a predetermined operation from the communication terminal. be remembered. 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.

Therefore, 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 when the communication terminal performs a predetermined operation to set and register the incoming call rejection. When you search, the storage area for the searched terminal number is indexed for the call rejection settings.
It does not connect to the called terminal, but sends a busy signal or call rejection signal to the calling party.

[Problem that the invention seeks to solve]

The conventional call rejection method described above requires one dial number 1 for each terminal line in which a communication terminal is accommodated.
This number is assigned as a terminal number, so if a call rejection service is set and registered for one terminal number, calls cannot be received on the terminal line assigned this terminal number. Therefore, when there is an urgent matter There was a problem that I could not contact you even if I was present.0 By the way, if you are away from your seat, there is no call rejection service.
Services such as call forwarding, notification of absence, and reception of messages while absent are utilized, and the call rejection service is a service that assumes that the person is present.

[Means for solving problems]

The incoming call rejection method of the present invention follows the operation procedure of the incoming call rejection service that sends a call rejection signal to the caller in response to an incoming call that arrives at a terminal that has been set and registered for incoming call rejection. Normally, when a digill code for canceling incoming call rejection is added to the called terminal number and received, the operation procedure for the additional dialing service is performed, and the operating procedure for registering the incoming call rejection setting is sent to the called terminal by sending a ringing signal. The cover is equipped with a central control unit that switches over the operating procedure of terminal connection.

〔Example〕

Next, the incoming call rejection system of the present invention will be explained with reference to the drawings.

Fig. 1 is a functional diagram showing an embodiment of the present invention;
The figure is a flow chart showing an example of the main operating procedure of the present invention.

In FIG. 1, the main switch 10 is the interface 2
0, each of the terminals 21 and 22 is connected to the main switch terminal A-H, and the additional register 31 and additional register 32 are connected to another terminal, respectively. The central controller 40 controls the main switch 10 by making full use of programs and data stored in the main memory 50, and establishes exchange connections between the terminals. The main storage device 50 has a terminal data storage area 51 and a special code storage area 52. The terminal data storage area 51 is a storage area for fixed data set in advance for each of the line positions [A, B, . . . , and setting registration data registered from the terminal according to safety. Has line position tl￥A
Terminal numbers 234 and 345 and line classes A to B are registered for each of the lines B and B, and a setting for rejecting incoming calls is registered for the line position B. The special code storage area 52 specifies and stores in advance special codes and their functions among the additional dial codes. A special code 91 is an incoming call rejection release code.

Next, with reference to FIG. 2 and FIG. 1, an example of the main operating procedure of the central control device 40 shown in FIG. 1 will be described. When an incoming call is received at the automatic exchange, the central control unit 40 learns of the incoming call via the interface 20 and controls the main switch 10 to connect the register 31 to the calling line and send a dial code reception preparation number 1d. Then, the called terminal number returned according to the reception preparation signal is received via the register 31 (operation procedure 1). The central control unit [40 stores the received called terminal number (for example, 345) in the terminal data storage area 5.
1 and index the registration of incoming call rejection settings as setting registration data (operation procedure 2). The central controller 40 controls the main switch 10 based on the registration index of the incoming call rejection setting, connects the additional register 32 to the calling party, prepares to receive an additional dial from the calling party (operation step 3), and makes the call. Send a call rejection signal to the calling party (operation step 4). Central control device 40
receives the caller's additional dial in response to the call rejection signal via the additional register 32 (operation step 5).

Next, the central control unit k40 searches the special code storage area 52 for the special code (for example, 91) resulting from the received additional dial, and retrieves the function of canceling the incoming call rejection (operation step 6). When receiving a special code for canceling incoming call rejection, the central control unit 40
calls the called party and, in response to the called party's response, performs a normal incoming call connection in which the called line is connected to the calling party (operation step 7). On the other hand, if it is not a special code for canceling the incoming call rejection, the central controller 40 waits for reception of a disconnection signal (operation step 11).

In the above embodiment, the special code 91 on the additional dial is a call rejection canceling code that is commonly known to the caller, and the caller knows the intention of the called party by receiving the call rejection signal, but the caller knows the intention of the called party by receiving the call rejection signal. In order to force the caller to receive the call, further restrictions may be added to limit the cancellation of incoming call rejection by additional dialing to some line classes of the caller, or provide a function using a special code containing a private number for each IF user. It would be better to merge.

In the above embodiment, the registers and the additional registers are illustrated separately, but the same registers may be connected. The main switch may be time-divided or space-divided, and the central control unit and main storage device represent the main control means and main storage means of the automatic exchange, respectively, and are not limited to the functional block configuration shown. There is no particular limitation on the method of receiving the additional dials, as existing methods such as audio frequency signals using push-button dials can sufficiently perform this function. Also, although we explained that the reception of additional dialing occurs by sending a call rejection signal, it is possible to increase the code storage capacity i' of the register and dial the special code of additional dialing following the called terminal number. It is.

〔Effect of the invention〕

As explained above, in the incoming call rejection method of the present invention, when the exchange receives the called terminal number and then a special code dial for canceling the incoming call rejection from the calling party, the called party who has set and registered the incoming call rejection will accept the incoming call to the terminal. By providing a central control unit for control, it has the effect of expanding the service by allowing calls to be received under predetermined conditions even if the user registers a setting to reject calls if he or she is present when making an emergency call. .

[Brief explanation of drawings]

FIG. 1 is a functional block diagram showing an embodiment of the incoming call rejection method of the present invention, and FIG. 2 is an example of the main operating procedure of the central control unit according to FIG. FIG. 10... Main switch, 21.22... Group/terminal, 31.32... Register, 4o...
Central control unit, 50...Main memory, 51...Mark...
Terminal data storage area, 52...Special code storage area. (,-2 Fig. 1 Kotobuki 2

Claims (1)

[Claims] When an automatic exchange that has call rejection service and additional dialing service functions receives a predetermined call rejection release dial code from the caller for an incoming call that has been registered to a terminal that has been set and registered for call rejection, it sends a paging signal to the called terminal. An incoming call rejection method characterized by comprising a central control unit that switches to a normal connection operation procedure of sending and calling.