JPH06169482A - Fixed radio connection device - Google Patents

Abstract

PURPOSE:To send a message of speech path disconnection to the other party of speech before speech path disconnection at the time of the degradation in field intensity of a radio line during speech. CONSTITUTION:A radio interface 2 outputs the field intensity of a reception carrier to a microprocessor 5. The microprocessor 5 monitors this field intensity; and if it is degraded to a prescribed value or lower, hooking information stored in a memory 4 and the extension number of a subscriber circuit where an announcement device is stored are read out and are sent to the PBX side through a line interface 3 and a select signal generator. On the side of the PBX, a subscriber circuit to which a fixed radio connection device is connected is held, and a subscriber circuit to which a wired telephone set is connected and the subscriber circuits in junction to the announcement device are connected, and the busy line is disconnected after message 'The line is disconnected because of a bad radio state' is sent from the announcement device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed wireless connection device for making a call with a mobile wireless telephone terminal, and more particularly to an automatic recovery system when the electric field strength of a wireless line deteriorates.

[0002]

2. Description of the Related Art Conventionally, when a stand-alone cordless telephone directly connected to a subscriber line interface goes away from a fixed wireless connection device during a call with a specific fixed wireless connection device and the electric field strength of the wireless line deteriorates, If the wireless line does not recover to a predetermined electric field strength within a predetermined time, the wired side line (PBx side) and the wireless side line are forcibly restored to prevent invalid hold of each line.

[0003]

In the conventional recovery method by the deterioration of the electric field strength of the wireless line during a call through the fixed wireless connection device, when the forced recovery is performed, the other party of the call suddenly receives a call. There was a problem of being disconnected.

An object of the present invention is to provide a fixed wireless connection device which, when the electric field strength of a wireless line deteriorates during a call, sends a predetermined message to the other party of the call to give notice of disconnection and then restores.

[0005]

A fixed wireless connection apparatus of the present invention has at least one mobile wireless terminal via a wireless line in a private branch exchange having a transfer function and accommodating a plurality of extension telephones via a wired line. It accommodates at least one fixed wireless connection device to be connected, and an announcement device having a function of registering a predetermined message in advance, automatically answering a call from the private branch exchange and automatically recovering after sending a message, When the fixed wireless connection device detects that the electric field strength of the wireless line has deteriorated to a predetermined value or less, the transfer of the message "disconnect line due to deterioration of wireless line condition" registered in the announcement device Automatically recovers after request. Also, the radio interface for separating the reception information from the mobile radio terminal received via the radio line into a voice signal and a reception carrier, and the electric field strength information of the reception carrier are monitored and compared with a predetermined electric field strength. A processor, a memory for storing transfer request information of the message registered in the announcement device and transfer destination designation information, and the processor when detecting that the electric field strength has deteriorated to a predetermined value or less. A selection signal generator for receiving transfer request information and transfer destination designation information of the message read from the memory, and generating a start signal of the transfer function and a selection signal corresponding to the designation information of the transfer destination; A line that receives the transfer function activation signal and the selection signal from a signal generator and sends the signal to the private branch exchange via a wired line. And an interface.

[0006]

The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.
An antenna 1 that interfaces with a wireless line is connected to a wireless interface unit 2, and a baseband signal such as a voice signal is connected to a line interface unit 3. at the same time,
The electric field strength of the reception carrier of this wireless line is configured to be monitored by the microprocessor 5. Further, the line interface section 3 is connected to a selection signal generating section 7 which generates preset hooking signals and selection signals, and the memory 4 connected to the microprocessor 5 stores the information to be sent. Has been done.

FIG. 2 is a relay system diagram showing an embodiment in which the fixed wireless connection device of the present invention is accommodated in a private branch exchange (PBX). The subscriber circuits 12, 14, 16 are connected to the switch matrix 17, and the wire telephone 11, the fixed wireless connection device 13 and the announcement device 15 are connected to the subscriber circuits 12, 14, 16 respectively. Further, the announcement device 15 is assumed to have an automatic incoming call answering function and an automatic restoration function after completion of the announcement. The mobile wireless terminal 10 is connected to the fixed wireless connection device 13 via a wireless line.

Next, the operation will be described with reference to FIGS. In FIG. 2, the mobile wireless terminal 10 is a wire telephone 11.
It is assumed that a call path is formed through the fixed wireless connection device 13, the subscriber circuit 14, the switch matrix 17, and the subscriber circuit 12 in order to carry out extension mutual communication with the subscriber circuit 12. It is also assumed that the electric field strength above a certain level is maintained between the mobile wireless terminal 10 and the fixed wireless connection device 13. Furthermore, this PB
As a basic service function, X continuously dials an arbitrary extension number from the extension during a call to the hooking which is a transfer function activation signal, and automatically recovers by recovering itself. The announcement device 15 is set in advance to record an announcement to the effect that "the line is disconnected because the radio wave condition is not good" and to send out this announcement after the automatic incoming call response to automatically recover.

When the mobile wireless terminal 10 moves away from the fixed wireless connection device 13, the electric field strength of the wireless line during this time deteriorates. This electric field strength is input via the wireless interface 2 as shown in FIG. 1, and is monitored by the microprocessor 5. Further, when the deterioration of the electric field strength increases and exceeds a predetermined limit, the microprocessor 5 causes the hooking information stored in the memory 4 and the extension number of the subscriber circuit 16 to which the announcement device 15 shown in FIG. 2 is connected. The selection signal information corresponding to "C" is read out, and the hooking information and the selection signal information read out to the line interface 3 and the selection signal generation unit 7 shown in FIG. 1 are sent to the wired line side, that is, the PBX side.

As shown in FIG. 2, when the PBX receives the transfer request from the fixed wireless connection device 13, the extension telephone 11 (subscriber circuit 12) which has been in the call until then is put on hold, and the extension number "C". The subscriber circuit 16 corresponding to "" is called. After the processing of the transfer request is completed, the fixed wireless connection device 13
It automatically restores the wired line, and at the same time restores the wireless line and goes into an idle state. When the subscriber circuit 14 is restored, the PBX connects the held communication path of the subscriber circuit 12 to the subscriber circuit 16 via the switch matrix 17. The announcement device 15 connected to the subscriber circuit 16 automatically responds to the call and sends a preset message to the subscriber circuit 12, that is, the extension telephone 11 to make a call due to deterioration of the wireless line. The disconnection device 15 notifies the disconnection, and then the announcement device 15 itself automatically recovers.

[0011]

As described above, according to the present invention, before automatically recovering due to deterioration of the state (electric field strength) of the wireless line,
Since it is possible to notify the other party of the call up to that point by using the transfer function which is the basic function of the PBX, a message to the effect that the message will be automatically recovered by announcement, etc., and thus the serviceability can be improved using the existing PBX .

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a relay system diagram in which the fixed wireless connection device shown in FIG. 1 is applied as an extension terminal of a PBX.

[Explanation of symbols]

 1 Antenna 2 Wireless Interface 3 Line Interface 4 Memory 5 Microprocessor 7 Selection Signal Generation Unit 10 Mobile Wireless Terminal 11 Wired Telephone 12, 14, 16 Subscriber Circuit 13 Fixed Wireless Connection Device 15 Announcement Device 17 Switch Matrix

Claims (2)

[Claims] 1. A fixed wireless connection device for connecting at least one mobile wireless terminal to a private branch exchange having a transfer function and accommodating a plurality of extension telephones via a wired line, and a predetermined wireless connection device. The fixed wireless connection device accommodates an announcement device having a function of automatically registering a message in advance and automatically answering a call from the private branch exchange and automatically recovering after sending the message, and the fixed wireless connection device has a predetermined electric field strength of the wireless line during a call. Fixed wireless connection characterized by automatically recovering after a transfer request of the message "disconnect due to deterioration of wireless line" registered in the announcement device when it is detected that the value has deteriorated below a value apparatus. 2. A radio interface for separating the reception information from the mobile radio terminal received via the radio line into a voice signal and a reception carrier, and a predetermined electric field strength by monitoring electric field strength information of the reception carrier. It is detected that the processor for comparing and collating with, the memory for storing the transfer request information of the message registered in the announcement device and the designation information of the transfer destination, and that the electric field strength has deteriorated to a predetermined value or less. When the processor receives the transfer request information and the transfer destination designation information of the message read from the memory, the selection signal generating device generates a start signal of the transfer function and a selection signal corresponding to the transfer destination designation information. And receiving the transfer function activation signal and the selection signal from the selection signal generator and sending them to the private branch exchange via a wired line. The fixed wireless connection device according to claim 1, further comprising: