JPH0879387A - Exchange system - Google Patents

Abstract

PURPOSE: To improve efficiency of a system by informing a caller to the effect that a mobile terminal not replying an incoming call is restored to a state available for communication only when required so as to prevent unnecessary communication. CONSTITUTION: A timer 12 is used to decide whether or not either one of portable terminal replies an incoming call within a prescribed time during calling to the portable terminal 4i1 to 4io. When no reply is decided, no reply to the call is informed to a portable terminal equipment being a caller. When the portable terminal equipment not replying the incoming call restores to a communication available state, information representing whether or not the notice of the restoration is desired is stored in a main storage device 9 according to a command from the portable terminal equipment being the caller. On the other hand, when the restoration to the communication available state is detected, whether or not the restoration to the communication available state is to be noticed to the portable terminal equipment being the caller is decided based on the information in the main storage device 9 and only when the notice is decided, it is informed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exchange system accommodating a portable radio terminal such as a mobile telephone, a car telephone device, a cordless telephone, a radio telephone terminal.

[0002]

2. Description of the Related Art In recent years, for example, a base station of a cordless telephone system is connected to an extension of a private branch exchange, and the cordless telephone can be used to carry out extension-to-extension calls and station line calls by way of this base station. The system is being developed and operated. In this type of system, the cordless telephone can receive services such as outgoing and incoming calls if it is within the range where radio waves from the base station can reach.

Therefore, when the cordless telephone is not within the range where the radio waves from the base station can reach, or when the power of the cordless telephone itself is off, an incoming call to the cordless telephone does not work. It will be.

In such a case, the caller temporarily gives up the call, and thereafter, until the cordless telephone responds to the incoming call, the caller repeatedly makes a call and tries the call at an arbitrary timing, so that the operation is extremely troublesome. is there.

Therefore, when a cordless telephone which has not received an incoming call recently returns to the wireless area or is turned on to be able to communicate, it has a function of notifying the caller of that fact. It is considered to make.

[0006]

However, such a system has the following problems to be solved. That is, the caller may not necessarily be able to contact the user of the cordless telephone that has not answered the call, depending on the reason for the call. However, in the above-mentioned conventional system, when the cordless telephone that does not answer the incoming call is restored to the communicable state, the fact is notified to the caller's terminal. As a result, unnecessary communication is increased, and unnecessary notification is confused for the caller, which is not preferable.

A first object of the present invention is to notify a caller only when a mobile terminal which does not respond to an incoming call is restored to a communicable state, and the caller is notified only when the fact is necessary. It is an object of the present invention to provide a switching system that can improve the operability of a person and prevent unnecessary communication to improve the operation efficiency of the system.

A second object of the present invention is to perform an incoming call process only when the mobile terminal is in a communicable state, thereby preventing wasteful use of communication resources such as a wireless line. The purpose is to provide a system.

A third object of the present invention is such that, when the mobile terminal cannot communicate, the fact that the mobile terminal is unable to communicate is notified to the terminal of the calling party by a voice message, whereby the calling party can call the called party. It is an object of the present invention to provide a switching system capable of clearly knowing that a mobile terminal is in an incommunicable state.

[0010]

In order to achieve the above-mentioned first object, a first aspect of the present invention is to provide a switching device accommodating a plurality of wired lines, and at least one of the plurality of wired lines of the switching device. In a switching system including a wireless base station connected to one wireless base station and a mobile terminal connected to the wireless base station via a wireless line in a wireless area formed by the wireless base station, an incoming call to the mobile terminal is received. During a call, the incoming call response monitoring means determines whether or not the mobile terminal responds to the incoming call within a predetermined time. The notification means notifies the caller terminal of the incoming call unresponsiveness, and after the notification of the incoming call unresponsiveness, the mobile terminal of the incoming call unresponsiveness can communicate according to a predetermined instruction from the calling party terminal. Information indicating whether you wish to notification thereof stored in association with the mobile terminal of the called non-response when turned. Then, by monitoring whether or not the mobile terminal is in the communicable state, and when it is detected that the mobile terminal is in the communicable state, the communication recovery notifying means responds to the mobile terminal. Based on the stored information, it is determined whether or not to notify the source terminal that communication is possible, and if it is determined that the notification is required, the source terminal is notified. On the other hand, the fact that the mobile terminal is in a communicable state is notified.

In order to achieve the above-mentioned second object, a second invention is a switching device accommodating a plurality of wired lines, and a radio connected to at least one of the plurality of wired lines of the switching device. In a switching system including a base station and a mobile terminal connected to the radio base station via a radio line in a radio area formed by the radio base station, the mobile terminal is connected to the radio base station. If the mobile terminal receives an incoming call to the mobile terminal, the terminal status monitoring means monitors the terminal status monitoring means to determine whether or not the terminal status monitoring means stores the terminal status stored in the terminal status monitoring means. Based on the monitoring result, it is determined whether or not the mobile terminal is in a communicable state. Then, when it is determined that the mobile terminal is communicable, the first control including the incoming call processing for the mobile terminal is executed, and when it is determined that the mobile terminal is not communicable, the first control is performed on the mobile terminal. The second control is executed by omitting the incoming call process.

In order to achieve the above-mentioned third object, the third invention is the second invention when it is determined that the mobile terminal cannot communicate.
As a control of the above, the voice generating means generates a voice message to the effect that communication is impossible and notifies the source terminal of the voice message.

[0013]

As a result, according to the first aspect of the present invention, when the caller does not answer the call, the caller performs a predetermined instruction operation so that the caller who does not answer the call becomes ready for communication. In this case, information as to whether or not to notify that effect is registered in the storage means. Then, when the mobile terminal which does not respond to the incoming call is restored to the communicable state in this state, it is determined whether or not to notify that the communicable state is restored based on the information registered in the storage means. The above will be notified to the calling party only if the calling party desires notification.

Therefore, the caller does not need to repeat the call operation to the mobile terminal which does not respond to the incoming call until the terminal responds, thereby improving the operability. Further, since the notification is given only when the caller desires to be notified, unnecessary notification can be prevented and the confusion of the caller can be reduced. Furthermore, by eliminating unnecessary notification, unnecessary notification is reduced in combination with the elimination of repeated call origination by the caller as described above, which makes it possible to improve the operational efficiency of the switching system. .

On the other hand, according to the second aspect of the present invention, since the incoming call processing is performed only when the mobile terminal is in the communicable state, the incoming call destination mobile terminal is outside the wireless area or the power is turned off to communicate. When the processing is in a stopped state, unnecessary incoming call processing is not performed, which prevents wasteful use of communication resources such as a wireless line.

According to the third aspect of the invention, when the destination mobile terminal cannot communicate, the fact is notified to the calling terminal by a voice message. The person can clearly know by voice that the mobile terminal at the call destination is in a state in which communication is impossible.

[0017]

【Example】

(First Embodiment) FIG. 1 shows a schematic configuration of an exchange system in the first embodiment. This switching system includes a switching device A, a plurality of base station groups, and a plurality of mobile terminals connected to these base station groups via wireless lines. The plurality of base station groups are respectively base stations 311 to 31j, 32.
1 to 32k, ..., 3i1 to 3il, and form communication areas AE1, AE2, ..., AEi, respectively.
For example, the base stations 311 to 31j are the communication area AE1, the base stations 321 to 32k are the communication area AE2, and the base station 3
i1 to 3il form communication areas AEi, respectively.

These base stations 311 to 31j,
In the communication areas AE1, AE2, ..., AEi formed by 321 to 32k, ..., 3i1 to 3il, the mobile terminals 411 to 4io can talk. In FIG. 1, the mobile terminals 411 to 41m are present in the communication area AE1, the mobile terminals 421 to 42n are present in the communication area AE2, and the mobile terminals 4il to 4io are present in the communication area AEi.

The exchange apparatus A includes a communication path switch 1, a plurality of extension interfaces 211 to 2il connected to the communication path switch 1, and external line interfaces 51 to 5p.

The communication path switch 1 selectively connects the extension interfaces 211 to 2il and the extension interfaces 211 to 2il and the extension interfaces 51 to 5p to enable communication of voice and various data. It has a function.

The extension interfaces 211 to 2il include
The base stations 311 to 3il are respectively connected.
For example, the base stations 311 to 31j are respectively connected to the extension interfaces 211 to 21j and the extension interfaces 221 to
22k has base stations 321 to 32k, and extension interfaces 2i1 to 2il have base stations 3i to 32il, respectively.
i1 to 3il are connected to each other.

The extension interfaces 211 to 2il have an interface function between the base stations 311 to 3il and the switching apparatus A, respectively. In addition, the outside line interface 51
.About.5p have an interface function between the office lines 61 to 6p and the switching apparatus A, respectively.

Further, the exchange A has a control unit 8. The control unit 8 is connected to the communication path switch 1, the extension interfaces 211 to 2il and the external line interfaces 51 to 5p via the bus 7, and further includes a main storage device 9, a ROM 10, a RAM 11 and a timer 1.
2 is connected.

The main storage device 9 is provided with a communication area information table T1 and a terminal recovery notification information table T2. The communication area information table T1 stores, for each of the communication areas AE1 to AEi, base stations that form these communication areas and mobile terminals whose positions are registered in the communication areas.

The terminal recovery notification information table T2 stores information about the incoming call when there is an incoming call to each of the mobile terminals 411 to 4io, and has four storage areas. The four storage areas are a mobile terminal information area, a terminal recovery notification information area, and two caller number areas. In the mobile terminal information area, the mobile terminal number of the incoming call destination is stored.

The terminal recovery notification information area stores information indicating whether or not to carry out the terminal recovery notification instructed by the source terminal when the incoming call destination portable terminal does not answer the incoming call. In FIG. 3, “Yes” is stored when the notification is given, and “No” is stored when the notification is not given. Caller numbers are stored in the two caller number information areas, respectively.

The ROM 10 stores a control program for the exchange system, and the RAM 11 stores various data during the exchange operation. The timer 12 has a clock function.

The control unit 8 controls the entire switching system. In addition to the usual control functions such as outgoing / incoming call control and exchange control, the call information storage control unit 81, the incoming call non-response detection control unit 82, Incoming call unanswered notification control unit 83, terminal recovery notification storage determination unit 84, terminal recovery notification storage control unit 85, terminal recovery notification determination control unit 86, and terminal recovery notification control unit 8
Have 7.

In the call information storage controller 81, the portable terminal 41
When there is an incoming call to 1 to 4io, control is performed to store information about the incoming call in the main storage device 9, and in the incoming call unanswering detection control unit 82, the switching device A uses the base stations 311 to 311.
After sending an incoming signal to the mobile terminals 411 to 4io through 3il, it is detected that the response signal from the mobile terminals 411 to 4io has not been received within a certain time.

Further, the incoming call unanswering notification control unit 83 performs control for notifying the portable terminals 411 to 4io of the originator that the incoming call unanswering detection control unit 82 has detected the incoming call unanswering operation. In the recovery notification storage determination unit 84, when the mobile terminals 411 to 4io of the call destination become communicable by a predetermined operation by the user of the mobile terminals 411 to 4io of the call originator, the mobile terminals 411 to 4io of the call originator It is determined whether or not to notify.

Further, the terminal recovery notification storage control section 85 includes terminal recovery notification information indicating whether or not to perform a recovery notification when the mobile terminals 411 to 4io of the incoming call destination become communicable,
When the communication is restored, the caller number indicating the notification destination is stored in the terminal recovery notification information table T2 of the main storage device 9, and the terminal recovery notification determination control unit 86 uses the terminal recovery notification information table T2 to indicate the communication recovery time. It is determined whether or not the notification process is registered.

The terminal recovery notification controller 87 controls the mobile terminals 411 to 4io of the call originator to the mobile terminals 411 to 411 of the call receiver.
Notify that 4io is ready for communication. Next, the operation of the exchange system configured as above will be described with reference to FIG.
A description will be given using the flowchart shown in FIG.

Here, it is assumed that the user of the mobile terminal 411 in the communication area AE1 makes a call operation to the mobile terminal 412 in the same communication area AE1. Here, in the state where the power supply of the mobile terminal 411 is turned on and the power supply of the mobile terminal 412 is turned off,
It is assumed that the location is registered in the "communication area" a "AE1" of the communication area information table T1 shown in FIG.

Now, when the user of the mobile terminal 411 makes an outgoing operation to the mobile terminal 412, the outgoing signal is the base station 31 located in the same communication area AE1 as the mobile terminal 411.
It is received by any one of 1 to 31j. Then, the transmission signal is transferred from the received base stations 311 to 31j to the control unit 8 via the extension interfaces 211 to 21j (step s1).

Then, the control unit 8 reads out the position information of the portable terminal 412 from the communication area information table T1 in the main storage device 9, and the base stations 311 to 311 of the corresponding communication area.
An extension signal is sent from the extension interfaces 211 to 21j to 31j (step s2).

Then, the incoming signal is transmitted from the base stations 311 to 311.
31j is sent to the mobile terminal 412. At the same time, the control unit 8 causes the call information storage control unit 81 to store the number of the destination mobile terminal 412 in the terminal recovery notification information table T2 in the main storage device 9 (step s3).
The incoming call non-response detection control unit 82 starts measuring the incoming call non-response time of the mobile terminal 412 using the timer 12 (step s4).

Then, the response signal from the portable terminal 412 is waited (step s5), and when the response signal from the portable terminal 412 is received, a normal incoming call process is performed (step s).
6).

On the other hand, if the portable terminal 412 is powered off as described above, the portable terminal 412 does not send a response signal to the base stations 311 to 31j. When the incoming call unanswered time of the mobile terminal 412, which is timed using the timer 12, has expired within a predetermined time (step s7), the control unit 8 causes the incoming call unanswered notification control unit 83 to call the mobile phone of the sender. The terminal interfaces 411 are notified from the extension interfaces 211 to 21j via the base stations 311 to 31j that the call has not been answered (step s).
8). For this reason, the mobile terminal 411 outputs the fact that the incoming call was not answered by a corresponding display or voice.

The user of the mobile terminal 411 uses the mobile terminal 41
When the mobile terminal 412 recognizes that the incoming call was not answered in 2, the mobile terminal 412 performs a predetermined operation to set whether or not to receive the notification to that effect.

Then, the setting information is stored in the base station 311.
To 31j and extension interfaces 211 to 21j are transferred to the control unit 8. Upon receiving this setting information, the control unit 8 stores the corresponding information in the terminal recovery notification information table T2 in the main storage device 9. For example, the mobile terminal 4
"Yes" is stored in the terminal recovery notification information area corresponding to 12, and the extension telephone number "4000" of the mobile terminal 411 of the sender is stored in the caller number information area (step s10). ).

Now, in this state, for example, the portable terminal 41
2 user carries mobile terminal 412 and communication area AE
It is assumed that the mobile terminal 412 is moved to 2 and the power of the mobile terminal 412 is turned on.

Then, the mobile terminal 412 transmits a request signal for location registration processing, and the request signal is transmitted to the base stations 321 to 32k.
Be received by any of. Then, the request signal is transmitted from the received base stations 321 to 32k to the extension interface 22.
It is transferred to the control unit 8 via 1 to 22k (step s
11).

Upon receiving this request signal, the control unit 8 rewrites the portable terminal 412 stored in the communication area AE1 in the communication area information table T1 into the communication area AE2. And the extension interfaces 221 to 22k
Also, the end of the location registration process is notified to the mobile terminal 412 via the base stations 321 to 32k (step s12).

Next, the terminal recovery notification determination controller 86 in the controller 8 determines from the terminal recovery notification information table T2 whether the communication recovery notification information of the mobile terminal 412 is registered. Here, since the terminal recovery notification information in the mobile terminal 412 of the terminal recovery notification information table T2 is “present”, it is determined that the recovery notification is to be performed (step s13). Then, the control unit 8 reads out the caller extension number "4000" stored in the terminal recovery notice control unit 87 in association with the mobile terminal 412 in the terminal recovery notice information table T2 (step s14), and then the caller extension number is read. The mobile terminal 411 corresponding to "4000" is notified of a message indicating that the mobile terminal 412 is communicable via the extension interfaces 211 to 21j and the base stations 311 to 31j (step s15).

By receiving this notification, the portable terminal 4
The user of 11 can know that the mobile terminal 412 has become communicable, and can perform a call operation to the mobile terminal 412 if necessary.

As described above, in the first embodiment, the portable terminal 4
During the incoming call to 11 to 4io, it is determined whether the mobile terminal responds to the incoming call within a predetermined time by using the timer 12, and if it is determined that the incoming call is not answered, the mobile terminal 411 to 4io of the calling source is determined. In response to the incoming call unanswered, when the mobile terminal of the call originator responds to the instruction, when the mobile terminal of the unanswered incoming call is in a communicable state, the information indicating whether or not the user wants to be notified is mainly displayed. It is stored in the storage device 9. Then, when it is detected that the mobile terminal is in the communicable state, should the mobile terminal of the transmission source be informed of the communicable state based on the information in the main storage device 9? It is determined whether or not the notification is made, and only when it is determined that the notification should be made, the mobile terminal of the transmission source is notified of that fact.

Therefore, the caller is notified only when he / she wants to be notified that the mobile terminal is unable to receive the call, so unnecessary notification is prevented and the confusion of the caller is reduced. can do. Furthermore, by eliminating unnecessary notifications, it is possible to reduce wasteful use of the wireless line and improve the operational efficiency of the system.

(Second Embodiment) FIG. 6 shows a schematic configuration of an exchange system in the second embodiment. The exchange system according to the second embodiment includes an exchange B, a plurality of base station groups, and a plurality of mobile terminals connected to these base station groups via wireless lines.

Here, the exchange device B has substantially the same configuration as the exchange device A shown in FIG. 1 in the first embodiment, but the exchange device B is replaced by the exchange device B instead of the control unit 8. A controller 8b is provided, and instead of the main storage device 9 in the exchange device A, the exchange device B has a main storage device 9
b is provided. Further, the exchange device B is connected to the bus 7 with a torch device 13.

Also in the exchange system shown in FIG. 6, as in the case of FIG. 1, a plurality of base station groups are base stations 311 to 31j,
, 321 to 32k, ..., 3i1 to 3il, and form communication areas AE1, AE2, ..., AEi, respectively, and these base stations 311 to 31j, 321 to 32k,
... Communication areas AE1 and AE formed by 3i1 to 3il
2, ..., Within AEi, each mobile terminal 411-4io
Will be able to talk.

The main storage device 9b is provided with a portable terminal status table T3 as shown in FIG. The mobile terminal status table T3 stores information indicating whether or not each mobile terminal 411 to 4io is in a communicable state. Specifically, when it is determined by the location registration function of the mobile terminal of the exchange device and the mobile terminal that the mobile terminal is present in any communication area and the power of the mobile terminal is turned on. Stores "in control area" indicating that communication is possible.
On the other hand, if the mobile terminal does not exist in any communication area or the power supply of the mobile terminal is off, "out of control range" indicating that communication is impossible is stored. It

Further, the torch device 13 has a function of notifying by voice to the originator terminal that the portable terminal of the recipient is out of the control range under the control of the control section 8b.
By the way, the control unit 8b controls the entire switching system. In addition to the usual control functions such as call control and exchange control, the terminal state monitoring unit 8b1 and the communicable state determination unit 8 are used.
b2 and an incoming call control unit 8b3.

In the terminal status monitor 8b1, the portable terminal 41
It monitors whether 1 to 4io are in a state where they can communicate with the wireless base station, and stores the monitoring result in the mobile terminal status table T3.

Further, in the communicable state determining section 8b2, when there is an incoming call to the portable terminals 411 to 4io, the portable terminal can communicate based on the terminal state monitoring result stored in the portable terminal state table T3. It is determined whether or not the state.

Then, the incoming call control section 8b3 carries out the incoming call processing as usual when the portable terminal is judged to be communicable, while the incoming call processing is carried out when the portable terminal is judged to be uncommunicable. Then, control is performed to generate a voice message to the effect that communication is not possible and to notify the mobile terminal of the sender of the voice message.

Next, the operation of the exchange system configured as described above will be described based on the flow chart shown in FIG. Here, the mobile terminal 41 in the communication area AE1
1 user uses the mobile terminal 42 in the communication area AE2.
It is assumed that the call operation to 2 is performed. In the mobile terminal status table T3, since the mobile terminal 411 exists in the communication area AE1 and is in the power-on state, “in control area” is stored as the terminal control status, and the mobile terminal 422 is Since it does not exist in the communication area AE2, “out of control area” is stored as the terminal control state.

Now, when the user of the mobile terminal 411 makes an outgoing operation to the mobile terminal 422, the outgoing signal is the base station 31 located in the same communication area AE1 as the mobile terminal 411.
It is received by any one of 1 to 31j. Then, the transmission signal is sent from the base stations 311 to 31j to the extension interfaces 211 to 21j via the extension, and further transferred from the extension interface to the control unit 8b as an incoming call request (step s21).

Then, the communicable state determination unit 8 of the control unit 8b
The b2 determines whether or not the mobile terminal 422 is within the control area from the mobile terminal status table T3 in the main storage device 9b (step s22). Now, in the mobile terminal control status table T3, since the "terminal control status" corresponding to the "terminal number""422" is "out of control range", it is determined that the mobile terminal 422 does not exist in the communication area AE2, The control unit 8b connects the torch device 13 and the extension interface 211 by the communication path switch 1 (step s23).

Subsequently, the communicable state determination unit 8b2
Predetermined announcement information from the talk device 13 indicating that it is out of the control range is sent to the base station 311 via the bus 7, the communication path switch 1, and the extension interface 211. Then, the announcement information is transmitted from the base station 311 to the mobile terminal 411, and the caller of the mobile terminal 411 knows from the announcement that the mobile terminal 422 that is about to be called is out of the control range and cannot be called. .

On the other hand, for example, the mobile terminal status table T
3, it is assumed that the “terminal control state” corresponding to the “terminal number” “422” is “in the control range”, the mobile terminal 422 exists in the communication area AE2, and the mobile terminal 4
The power source of 22 is ON.

In this case, the control unit 8 secures the wireless line necessary for performing the incoming call processing (step s24), and sends the incoming call signal to the portable terminal 422 via the bus 7, the extension interface 222 and the base station. (Step s25).

As described above, in this embodiment, the portable terminal 411 is used.
Communication areas AE1 formed by the base stations 311 to 3il connected to each other through wireless lines.
-Main memory 9 stores whether or not communication control is possible within AEi. Then, when there is an incoming call to the mobile terminals 411 to 4io, it is determined from the storage whether or not the communication control is possible in the communication areas AE1 to AEi corresponding to the mobile terminals, and the mobile terminals are in communication area AE1. When it is determined that communication control is impossible in AEi, the incoming call process is not performed, and the mobile terminal of the transmission source is notified by voice.

Therefore, according to the present embodiment, when the portable terminal is outside the communication area or the power is turned off, unnecessary incoming call processing is not performed, and the wireless line or the like is not used. There is no waste of communication resources. Further, the calling party can surely know by voice whether or not the portable terminal he / she wants to call exists in the communication area, and thus, it is not necessary to make a meaningless re-call.

The present invention is not limited to the above-mentioned embodiments, but can be carried out by appropriately modifying it without departing from the scope of the invention. For example, after notifying the caller's mobile terminal that the callee's mobile terminal has become communicable, the caller's mobile terminal re-calls from the caller's mobile terminal to the callee's mobile terminal. Instead of entrusting the user with a predetermined call operation, the call may be automatically redone.

The timing at which the mobile terminal of the call originator is notified that the mobile terminal of the callee is ready to communicate is not limited to the end of the location registration processing in the mobile terminal of the callee as described above, It may be during the first outgoing call or incoming call processing after the incoming call unresponsiveness occurs in the mobile terminal.
Further, the configuration of various tables stored in the main storage device, the display method of call information on each mobile terminal, and the like can be changed according to the specifications at any time.

[0066]

According to the first aspect of the present invention, when the caller performs a predetermined instruction operation when the incoming call unanswered is notified, the incoming call unanswered terminal becomes ready for communication. The information about whether or not to notify that is registered in the storage means. Then, when the mobile terminal which does not respond to the incoming call is restored to the communicable state in this state, it is determined whether or not to notify that the communicable state is restored based on the information registered in the storage means. The above will be notified to the calling party only if the calling party desires notification.

Therefore, the caller does not need to repeat the call operation to the mobile terminal which does not respond to the incoming call until the terminal responds, thereby improving the operability. Further, since the notification is given only when the caller desires to be notified, unnecessary notification can be prevented and the confusion of the caller can be reduced. Furthermore, by eliminating unnecessary notifications, in addition to eliminating the repeated call origination of the caller described above, it facilitates re-communication of communications that have become unsuccessful at the mobile terminal and reduces unnecessary notifications. As a result, it becomes possible to improve the operational efficiency of the exchange system.

On the other hand, according to the second aspect of the invention, since the incoming call processing is performed only when the mobile terminal is in the communicable state, the incoming call destination mobile terminal exists outside the wireless area, and the communication is performed by powering off or the like. When the processing is stopped, unnecessary incoming call processing is not performed, which prevents wasteful use of communication resources such as wireless lines.
It is possible to improve the operational efficiency of the exchange system.

According to the third aspect of the invention, when the mobile terminal of the callee is unable to communicate, the fact is notified to the caller terminal by a voice message. The caller can clearly know by voice that the destination mobile terminal is in a state where communication is not possible, and the caller will not make unnecessary repeated calls, further improving the operational efficiency of the system. It becomes possible.

[Brief description of drawings]

FIG. 1 is a diagram showing a schematic configuration of a switching system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a communication area information table in the first embodiment.

FIG. 3 is a diagram showing a terminal recovery notification information table in the first embodiment.

FIG. 4 is a flowchart showing the operation of the exchange system in the first embodiment.

FIG. 5 is a flowchart showing the operation of the exchange system in the first embodiment.

FIG. 6 is a diagram showing a schematic configuration of an exchange system in a second embodiment.

FIG. 7 is a diagram showing a mobile terminal control state table in the second embodiment.

FIG. 8 is a flowchart showing the operation of the exchange system in the second embodiment.

[Explanation of symbols]

A ... Switching device, 1 ... Communication path switch, 211-2il ...
Extension interface, 311 to 3il ... Base station, 411
... 4io ... mobile terminals, 51-5p ... external line interface, 61-6p ... station line, 7 ... bus, 8 ... control unit, 81 ...
Call information storage control unit 82 ... Incoming call non-response detection control unit 83
... incoming call unanswered notification control unit, 84 ... terminal recovery notification storage determination unit, 85 ... terminal recovery notification storage control unit, 86 ... terminal recovery notification determination control unit, 87 ... terminal recovery notification control unit, 9 ... main storage device, 10 ... ROM, 11 ... RAM, 12 ... Timer, A
E1 to AEi ... communication area, B ... switching device, 8b ... control unit, 8b1 ... terminal state monitoring unit, 8b2 ... communication possible state determination unit, 8b3 ... incoming call control unit, 9b ... main storage device, 13 ...
Torch device.

Claims (3)

[Claims] 1. A switching device accommodating a plurality of wired lines,
A wireless base station connected to at least one of the plurality of wired lines of the switching device, and a movement connected to the wireless base station via a wireless line within a wireless area formed by the wireless base station. In a switching system including a terminal, a response monitoring unit for determining whether or not the mobile terminal responds to an incoming call within a predetermined time during an incoming call to the mobile terminal, and within a predetermined time in the response monitoring unit. Incoming call unanswering notification means for notifying an incoming call unanswered to the source terminal when it is determined that the incoming call unanswered by the incoming call unanswered by the incoming call unanswered notification means,
According to a predetermined instruction from the source terminal, when the mobile terminal that does not respond to the incoming call is in a communicable state, the mobile terminal that does not respond to the incoming call is provided with information indicating whether or not to notify that effect. Storage means for storing the mobile terminal in association with each other, terminal status monitoring means for monitoring whether or not the mobile terminal is in a communicable state, and the mobile terminal is in a communicable state by the terminal status monitoring means. Whether or not to notify the originator terminal that communication is possible based on the information stored in the storage means in association with the mobile terminal when it is detected And a communication recovery notifying means for notifying the originator terminal that the mobile terminal is in a communicable state, . 2. A switching device accommodating a plurality of wired lines,
A wireless base station connected to at least one of the plurality of wired lines of the switching device, and a movement connected to the wireless base station via a wireless line within a wireless area formed by the wireless base station. In a switching system including a terminal, a terminal state monitoring unit that monitors whether the mobile terminal is in a communicable state with the radio base station and stores the monitoring result, and for the mobile terminal When there is an incoming call, based on the terminal state monitoring result stored in the terminal state monitoring means, a determining means for determining whether or not the mobile terminal is in the communicable state, and the determining means, When it is determined that the mobile terminal is communicable, the first control including the incoming call process for the mobile terminal is executed, and when it is determined that the mobile terminal is not communicable, the mobile terminal is connected to the mobile terminal. Switching system being characterized in that and a control means for performing the second control is omitted incoming process. 3. The control means has a voice generation means, and when it is determined that the mobile terminal cannot communicate, the voice generation means generates a voice message to the effect that communication is impossible. The exchange system according to claim 2, wherein the terminal is notified.