JPH08228230A - Caller number display device - Google Patents

Abstract

PURPOSE: To allow a cordless subscriber terminal equipment to report caller number information to an incoming call when the terminal equipment reaches an incoming call enable state and to make mutual contact when an incoming request is received while the cordless subscriber terminal equipment is disable of receiving the incoming call. CONSTITUTION: When a cordless subscriber terminal equipment 1a is disable of reception of an incoming call and receives a call reception request, an exchange 3 stores terminal number information of a caller side with respect to an incoming call to a memory 7 under the control of a central controller 6. When the cordless subscriber terminal equipment 1a reaches a call reception enable state, the central controller 6 reads the caller number information from the memory 7 and displays the information to a display device of the cordless subscriber terminal equipment 1a via any of base stations 2a-2z.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic telephone exchange and, more particularly, to a device for displaying a calling number of a subscriber on a display of a called subscriber terminal.

[0002]

2. Description of the Related Art Conventionally, automatic exchanges perform various controls on a plurality of subscriber terminals. This control is related to outgoing and incoming calls from each subscriber terminal. One of them is a process of displaying the caller number for an incoming call on the display of the called subscriber terminal. In this case, caller ID information is sent to this display-equipped terminal and the display-equipped terminal receives the incoming call during an incoming call or during a call after answering the incoming call. To display.

[0003]

However, in the configuration of the conventional example as described above, an incoming call cannot be received while the cordless subscriber terminal of the incoming call is out of the coverage area or the power is not turned on and the incoming call cannot be received. If so, the caller number information from the caller will not be transmitted to the other subscriber. At this time, unless the caller again makes a call, the called subscriber does not know that the particular subscriber has received a call permanently, and even after both subscribers' terminals can make and receive a call. There is a problem that it becomes impossible to keep in touch with each other immediately.

The present invention solves such a conventional problem, and when an incoming call is made to a subscriber terminal which is in an out-of-call area or in a state where the power is not turned on and the incoming call is not possible, Immediately after the called subscriber terminal shifts to a call-enabled state, the calling number for the incoming call is displayed when the call cannot be received, and the calling number information can be transmitted to the other party at any time for the subscriber. Therefore, it is an object of the present invention to provide a caller number display device capable of reliably communicating with each other.

[0005]

In order to achieve the above object, the present invention is directed to a cordless subscriber terminal which is in an out-of-call area or is in an incoming call impossible state due to power-on or the like, and other subscribers. When a call is not made from the terminal and the call cannot be received, the caller number information is stored in the storage means, and when the destination cordless subscriber terminal shifts to a state in which the call can be received, the above-mentioned information is displayed on the display of the cordless subscriber terminal. The caller number stored in the storage means is displayed.

[0006]

As described above, according to the present invention, even if there is an incoming call in a state where the cordless subscriber terminal cannot receive the call, when the cordless subscriber terminal becomes able to receive the call, the caller number is displayed on the display. Is displayed, the caller number can be surely notified to the other party.

[0007]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic block diagram showing the configuration of a telephone device using a caller number display device according to an embodiment of the present invention.

In FIG. 1, a to z represent subscriber identifications. The cordless subscriber terminals 1a to 1z are the base stations 2a to
Wireless communication with any of the base stations 2a to 2z.
Each of 2z is connected to a speech path switch 4 in the exchange 3 via subscriber circuits 5a to 5z. Exchange 3
In, the central control unit 6 is connected to the subscriber circuits 5a to 5z and the memory 7 as a storage means. This memory 7
The caller number information is stored for the call received when the cordless subscriber terminals 1a to 1z cannot receive the call.

FIG. 2 shows the internal structure of the memory 7 in FIG. In FIG. 2, each address a1 to an, b1 to b
n, ..., Z1 to zn are cordless subscriber terminals 1a to
Corresponds to the subscriber identification number for recognizing 1z. The content of the data is the caller number of the subscriber who made the call for which the incoming call was requested when the subscriber was in the call-disabled state. It is possible to store more than one.

Next, the caller number display device of this embodiment will be described with reference to the simplified signal diagram shown in FIG.

When the cordless subscriber terminal 1a is powered on,
The own terminal 1a monitors whether or not wireless communication with any of the base stations 2a to 2z is possible. When the own terminal 1a is within the coverage area, both outgoing and incoming calls are possible.

When the cordless subscriber terminal 1a is in the out-of-call area and cannot receive a call, when another subscriber makes a call to the cordless subscriber terminal 1a, the central control unit 6 controls the cordless subscriber. The terminal 1a is analyzed that the call cannot be received, and the caller number information is written and stored in the address a1 of the memory 7 as the caller number information when the call cannot be received. Even if there are a plurality of incoming requests when the cordless subscriber terminal 1a cannot make a call, they are sequentially written and stored in the addresses a2 and a3 of the memory 7.

After the data is stored in the memory 7 as described above, after the cordless subscriber terminal 1a returns to the coverage area where wireless communication is possible with any of the base stations 2a to 2z, the cordless subscriber is The central controller 6 receives the notification by notifying one of the base stations 2a to 2z that a call is available from the terminal 1a, and reads the caller number information written in the address a1 of the memory 7. , The information is transmitted from any of the base stations 2a to 2z and displayed on the display of the cordless subscriber terminal 1a. By performing a special number dial operation or a function button operation by the subscriber at the cordless subscriber terminal 1a, the address a of the memory 7 is stored in the same procedure as described above.
It is possible to sequentially display the caller number information written as 1, a2, ..., An on the display. After the caller number information written and stored in the memory 7 is displayed on the display, the contents of the addresses a1 to an of the memory 7 are erased by the control of the central controller 6.

In the above description, the case where the cordless subscriber terminal 1a is in the out-of-call area and cannot receive the call is displayed when the incoming call is made to the terminal 1a. However, in addition to this, for example, when the cordless subscriber terminal 1b is in a state where the power is not turned on and the call cannot be received, and when another subscriber makes a call to the terminal 1b, the central control unit 6 is cordless. It is analyzed that the subscriber terminal 1b cannot receive the call, and the caller number information is written and stored in the address b1 of the memory 7 as the caller number information when the call cannot be received. After that, when the cordless subscriber terminal 1b is powered on, a signal is sent to any of the base stations 2a to 2z that the call from the terminal 1b is ready to be communicated. Reads the caller number information written in the address b1 of the memory 7 and displays it on the display of the cordless subscriber terminal 1b. Even in this case, a plurality of caller numbers can be sequentially displayed as in the above.

In this way, the cordless subscriber terminal 1a
~ 1z is in a state where it is not possible to receive a call, the terminal 1a
When there is an incoming call to ~ 1z, the calling party number information for the call is stored in the memory 7 so that the subscriber stores it in the memory 7 after the cordless subscriber terminals 1a to 1z are ready to receive the incoming call. It is possible to know the calling number information that is displayed by displaying it on the display.

As described above, according to this embodiment,
When the cordless subscriber terminals 1a to 1z are in the out-of-call area or when the power is not turned on and the call cannot be received, the cordless subscriber terminal returns to the in-call area after the caller number information for the incoming call. Can be displayed on the display unit when the state where the incoming call is possible is entered by turning on. As a result, the subscriber can know the other party of the call that has received the incoming call request based on the caller number information even if the cordless subscriber terminal is in a state in which the incoming call cannot be received. Will be able to contact you promptly.

[0018]

As described above, according to the present invention, a subscriber who uses a cordless terminal cannot receive a call because the terminal is in a non-call area or the power is not turned on. In the meantime, it is possible to know from which subscriber the incoming call came to his terminal by looking at the caller number information displayed on the display. Therefore, it is possible to immediately know the other party of the incoming call that is in a state where the call cannot be received, when the ready state is reached, and dial the number of the other party on the spot to receive the call from the other party again. You can get in touch without having one. At the same time, it is possible to prevent a situation in which the necessary contact cannot be made when the other party forgets to contact again.

[Brief description of drawings]

FIG. 1 is a schematic block diagram showing the configuration of a telephone device that uses a caller ID display device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an internal configuration of a memory of an exchange in the telephone device.

FIG. 3 is a signal diagram for explaining a caller ID display device according to an embodiment of the present invention.

[Explanation of symbols]

 1a to 1z Cordless subscriber terminal 2a to 2z Cordless terminal Base station 3 Switch 4 Speech path switch 5a to 5z Subscriber circuit 6 Central control unit 7 Memory

Claims (1)

[Claims] 1. Caller ID information when a cordless subscriber terminal in a non-calling area or in a state in which a call cannot be received due to power not being turned on and the like cannot be received by calling from another subscriber terminal. Is stored in the storage means, and when the callee cordless subscriber terminal has entered a state in which it can receive a call, the caller number stored in the storage means is displayed on the display of the cordless subscriber terminal. Caller ID display device.