JPH03219795A - Radio telephone system - Google Patents

Abstract

PURPOSE:To attain tenant service by designating a trunk line of a connection destination so as to apply call connection request when a radio telephone set subscriber makes call connection request. CONSTITUTION:Trunk lines are grouped and radio telephone sets are grouped accordingly and are identification code is given to each group for the management. Moreover, an identification code corresponding to each group is given to line state display devices CLD. A stationary radio equipment BS receiving a call signal from a radio telephone set RT decides, whether or not a tenant identification code included in the received signal is coincident with a code stored in itself and applies processing only in the case of coincidence.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a wireless telephone system, and more specifically, to a wireless telephone system that provides communication using radio to wireless telephones moving within a wireless connection area. In particular, it relates to a premises wireless telephone system suitable for constructing a tenant-separated premises radio telephone system in an indoor building containing multiple offices. This system has the advantage that it is possible to provide a mobile phone service that can receive telephone service even if the floor layout is changed, and there is no need to change the installation of telephone connection cables, which is required with conventional wired telephone systems.

Problems to be Solved by the Invention However, the conventional in-premise wireless telephone system is basically a system based on the assumption that a wireless telephone and an individual user are in a one-to-one correspondence, and the telephone number is For example, in a button telephone system, a call that is returned to a department can be answered by anyone in that department. The caller can easily transfer the connection to the intended party. This is possible because the button telephone is equipped with a central office line button and a central office line status display, allowing the operator to grasp the status of each central office line and, based on this information, to specify and acquire the central office line. In conventional in-premises wireless telephone systems, quite complex key operations are required to place the telephone on hold and answer the telephone line.

The present invention has been made in view of the above-mentioned conventional situation,
Accordingly, an object of the present invention is to provide a new wireless telephone system that makes it possible to solve the above-mentioned problems inherent in the conventional technology.

Means for Solving the Problems In order to achieve the above object, the in-premise wireless telephone system according to the present invention uses a control wireless transmission path for controlling call connections to check the station line status, that is, the presence or absence of incoming calls on each station line. The status of the call, such as call in progress or on hold, is sent out, which is received by a line status display installed within the wireless connection area and equipped with a receiver for the control wireless transmission line, and displays the status of each station line. The system is configured so that a telephone subscriber can grasp the state of the central office line, and a wireless telephone subscriber can designate a desired central office line and request a call connection.

In addition, in order to be suitable for a behind-the-premises wireless telephone system behind a PBX that provides tenant services, the extensions of the PBX that are drawn into the switching control center are divided into groups in accordance with the tenant division of the PBX, and the line status indicator displays the extension status for each group. The wireless telephones are divided into tenants by being able to display them, and by assigning identification codes to the wireless telephones and managing them so that these groups can be identified.

EXAMPLE Hereinafter, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.

FIG. 1 is a system block diagram showing an embodiment of a wireless telephone system according to the present invention.

Referring to FIG. 1, a total of eight central office lines are connected to the fixed telephone network through subscriber line interfaces to the exchange control device EX, four of which are for tenant A. This line is managed by the exchange control device EX as a central office line for tenant B. In addition, wired lines are connected to a total of 10 fixed wireless devices BS from the exchange control device EX, and each of the five fixed wireless device BSs is connected to tenant A's service area SAA and tenant B's service area SA.
B.

Tenant A is equipped with eight wireless telephones RT and one line status display CLD, and tenant B is equipped with 10 wireless telephones RT.
One radio telephone RT and two line status indicators CLD are installed.

It is desirable that the number of fixed wireless BSs of each tenant is at least the number of station lines of each tenant + 1. In this embodiment, both tenants have fixed wireless BSs equal to the number of station lines + 1. is installed. In addition, the number of line status indicators CLD depends on the relationship between the users of wireless telephones RT in each tenant and the number of line status indicators CLD, so that all RT users in each tenant can see the display on the line status indicators CLD. It is sufficient that the number is convenient for listening to the sound emitted from the line status display device CLD, and in this embodiment, tenant A
One line status display device CLD is installed at Tenant B, and two line status display devices CLD are installed at Tenant B.

The appearance of the radio telephone RT is shown in Fig. 2.
has a built-in radio and is equipped with an antenna 11 to improve sensitivity. In addition, a transmitter 12, a receiver 1
3 and 12 dial buttons 14 and three function buttons 15 are provided as operation buttons. The dial button 14 is used to input a destination dial and specify a central office line.The function buttons 15 include a call button 15a for starting a connection request, and a hold button 15b for requesting a central office line hold during a call. and a call end button 15c for starting the end of the call. Furthermore, the radio telephone RT is provided with a charging terminal 16 for charging the built-in battery.

The appearance of the line status indicator CLD is shown in FIG. 3. The line status indicator CLD has a shape to be installed on a wall or the like, and status display LEDs 22 are provided corresponding to the antenna 21 and the central office line. The status display LED 22 displays information as shown in Table 1 in accordance with the status of the relevant station line.

Table 1 In addition, the line status indicator CLD is provided with a speaker 23, which emits a ringing tone when at least one central office line is receiving a call.

The radios of the fixed radio BS and the radio telephone RT are configured as transceivers that can simultaneously transmit and receive calls using multi-channel access, and can also connect calls, and one predetermined channel is used for call connection control. channels, and the remaining channels are used for calls.

The radio device of the line status indicator 'CLD is a receiver capable of receiving only the radio channel transmitted by the fixed radio device BS among the call connection control channels.

The fixed radio BS has an operating mode in which it accepts calls from the radio telephone RT and a mode in which it does not, and the exchange control device EX accepts and accepts calls from one fixed radio BS for each tenant. The fixed radio BS, which is in the mode of accepting and accepting calls, waits on the control radio channel, and when it receives a call from the radio filling machine RT, it receives a call from a call channel that has been confirmed to be free in advance. is transmitted to the radio telephone RT, a communication path is established between the radio telephones RT, and the call is transmitted to the exchange control device EX.

Outgoing? When the fixed wireless device BS, which is in the non-accepting mode, receives the display information from the exchange control device EX, it transmits it on the control radio channel and shifts to the mode in which it accepts outgoing calls. Also, when the call ends, the mode is set to not accept outgoing calls.

In addition, each fixed wireless device BS and each wireless telephone RT store the tenant identification code to which they belong, and the fixed wireless device BS that receives a transmission signal from the wireless telephone RT uses the tenant identification code included in the signal. It is configured to determine whether or not it matches what it remembers, and to process only if it matches.

Next, the operation of this embodiment will be explained using FIGS. 4 and 5. Both figures show the control sequence of the system focusing on one tenant. Tenant control is processed in parallel.

Figure 4 shows that there is an incoming call on central office line 1, and RT user ■ responds to it, forwards it verbally to RT user ■, and R
This shows the sequence from when user T makes a call until the end of the call.

Referring to FIG. 4, the incoming call on central line 1 is sent to the exchange control device FE.
The exchange control device EX sends a display information signal indicating that the station line 1 is receiving a call through a vacant fixed radio BS located in the tenant's zone. When the device CLD receives the signal, it displays the status display LED 22 of the central office line 1 indicating that a call is being received, and starts outputting a ringtone from the speaker 23. RT user [F] notices the incoming call and calls button 15a
Press only. At this time, the outgoing signal sent from the radio telephone RT includes information indicating that no office line is specified (in the figure, the outgoing signal is shown with (0) added after it) and a tenant identification code as the office line designation information. It is.

This transmission signal is sent from the fixed wireless device + qS (
D, and a communication path is established between the fixed radio equipment BS and the wireless radio telephone equipment 0 using the communication channel included in the communication channel designation signal. The fixed radio BScD receives and transmits the outgoing information to the exchange control unit fEX. The exchange control device 1EX responds to the incoming station line 1 because the station line designation information included in the received transmission information does not specify a station line, that is, closes the loop, and also sends a response to the fixed wireless device BS■ Connect the communication path of the central office line 1. At the same time, display information indicating that the central office line 1 is busy is sent out through the tenant's vacant fixed wireless device BS (here, BS ■). This display information is received by the line status display CLD, and the display of the office line 1 changes from incoming call to call in progress, and since there is no other incoming call, the ringing tone is stopped.

During the conversation with the other party, the RT user (2) is requested by the other party to intercede with the RT user (2), and presses the hold button 15b of his/her own RT. At this time, a hold signal is sent to the exchange control device EX via the fixed wireless device BS■ through the communication path. From now on, the wireless telephone R and the fixed wireless tRBS return to the standby state.

The exchange control device EX, which received the hold signal, restores the communication path between the office line 1 and the fixed wireless device 830, starts transmitting the hold melody to the office line 1, and connects the station line through the fixed wireless device BS■. 1 is on hold, and the state display of the station line 1 on the line status display CLD is switched to the moored display.

The RT user ■ who received the verbal transfer from the RT user ■ presses the number 1 dial button 14 that is the same as the number of the corresponding station line, and then presses the call button 15a. At this time, wireless telephone 1i
1RT■ sends out a transmission signal containing information indicating that the station line is designated as the station line designation information, and the fixed wireless iBs
The exchange control bag [EX that received the signal through the exchange control bag [EX] connects the communication path between the office line 1 and the fixed wireless device 880, sends display information indicating that the office line 1 is busy, and displays the line status indicator. Switch the CLD display.

When the call ends, the RT user ■ presses the end button 15c. The call termination signal is sent to the exchange control device EX through the fixed wireless device BS■, and the exchange control bag fEX restores the office line 1, that is, opens the loop, and sends display information indicating that the office line 1 is free, and the line Switch the display on the status display CLD.

FIG. 5 shows a control sequence when RT user P and RT user Q make consecutive calls.

Referring to FIG. 5, RT user P makes a call by specifying the office line 1, and RT user Q makes a call without specifying the office line. The operations of each part are the same as those described in FIG. 4 above, but when the exchange control device EX receives a dial signal, it sends a dial pulse (DP) to the corresponding office line.

Note that the office line designation information of the outgoing signal received from the radio telephone RTQ does not specify the office line.

At that time, since there is no incoming call on the central office line, central office line 3 is selected and captured from the vacant station 112.3.4.

In the above embodiments, two cases have been described, in which one central office line is designated as the central office line designation information, and the other is no designation at all. In other words, if there is no specification, the exchange control device EX
Depending on the presence or absence of incoming calls on the central office line, if there is an incoming call, a response is made, and if there is no incoming call, a call is made. However, the RT user may want to make a call without answering the incoming call, and in that case, the user should press the Diamond Feather* button and then the call button, and include this in the outgoing signal, and the exchange control device EX In that case, the system may be configured so that even if there is an incoming call on an empty office line, an empty office line is captured.

Furthermore, as shown in FIG. 6, as a modified example of FIG. 3, the line status display CLD is provided with an RT fixing base 24 and installed on the desk of each RT user, thereby improving the operational image of a conventional button telephone terminal. It is also possible to realize Also,
By incorporating a charger into the line status display CLD and constructing a structure in which the charging terminal provided on the radio telephone RT comes into contact with the charging output terminal of the charger when the radio telephone RT is placed on the fixed base, The standby mode can also compensate for the battery consumption of the wireless telephone RT inside.

As described in detail, according to the present invention, the switching control device notifies and displays the state of the station line on the line status display installed within the service area through the wireless transmission path for call connection control. Inform wireless telephone subscribers of the status of central office lines,
By configuring the wireless telephone subscriber to be able to select the office line to be connected to when requesting a call connection, it is possible to provide a wireless telephone system with operability equivalent to that of a conventional key telephone device.

Further, according to the present invention, the office line is divided into groups, the wireless telephones are also divided into groups correspondingly, and an identification code is assigned to each group for management. By providing an identification code corresponding to the PBX, it becomes possible to construct a wireless telephone system suitable for installation behind a PBX that provides tenant services.

[Brief explanation of drawings]

FIG. 1 is a system block configuration diagram showing an embodiment of the present invention, FIG. 2 is an external view showing an embodiment of a wireless telephone according to the present invention, and FIG. 3 is an embodiment of a line status indicator according to the present invention. FIG. 4 is an external view showing the incoming call/holding/
FIG. 5 is a control sequence diagram for response control, FIG. 5 is a control sequence diagram for calling according to the present invention, and FIG. 6 is an external view showing another embodiment of a line status indicator having a wireless telephone fixed unit and a wireless telephone system. . EX...exchange control device, BS...fixed radio, RT
...Wireless telephone, CLD...Line status indicator, SA
A... Service area of tenant A, SAB... Service area of tenant B 11, 21... antenna, 12... transmitter, 13.
...Handset, 14...Dial button, 15...Function button (15a...Call button, 15b...Hold button, 15c...End button), 16...Charging terminal, 22... ...Station line status display LED, 23...Speaker, 24...Wireless telephone fixing unit, 25...Power source for charger with built-in CLD for charging the radio telephone

Claims (6)

[Claims] (1) Consisting of a plurality of fixed wireless devices installed in a wireless connection area, a switching control device located between the fixed telephone network and the fixed wireless devices and connected to each of the fixed wireless devices via a wired line, and a wireless telephone; In a wireless telephone system having one or more wireless transmission paths for call connection control and multiple wireless transmission paths for voice calls, the switching control device transmits signals indicating the status of each wired line on the fixed telephone network side to the fixed wireless terminal. means for transmitting on the call connection control wireless transmission path through the call connection control wireless transmission path, and a signal indicating the state of the fixed telephone network side wired line transmitted from the switching control device is received through the call connection control wireless transmission path. In this case, a line status indicator is provided which has the function of indicating the status of the wired line included in the signal by display, etc., and the wireless telephone specifies the wired line on the fixed telephone network to which the wireless telephone subscriber wishes to connect. and means for sending the specified information to the switching control device through the fixed wireless device when a call is connected, and the switching control device connects the wireless telephone that sent the specified information based on the received specified information. A wireless telephone system characterized in that the wired line on the fixed telephone network side is selected according to a predetermined procedure. (2) The fixed telephone network side wired line designation information sent from the wireless telephone is information that specifies one line among the fixed telephone network side wired lines regardless of the line status; The information specifying the line status includes any of the information specifying the free line, and the switching control device is configured to determine whether the received fixed telephone network side wired line specifying information indicates that the line status is empty, In the case of specified information, the wireless telephone performs operations such as answering or making a call according to the specified line status, connects the wireless telephone to the line, and specifies that the line status is incoming call. In the case of information, select one of the incoming lines according to a predetermined procedure, respond to the selected line, connect the wireless telephone to the line, and check the line status. In the case of information specifying a vacant line, one is selected from among the vacant lines according to a predetermined procedure, a call is made to the selected line, and the wireless telephone is connected to the line. The wireless telephone system according to claim 1, further characterized in that the wireless telephone system is configured to connect. (3) The switching control device divides the wired line on the fixed telephone network side into a plurality of line groups, assigns a unique line group identification code to each line group, and monitors the status of the wired line on the fixed telephone network side. The wireless telephone is configured to include the line group identification code in a signal indicating the call connection control and transmit it through the fixed radio on the call connection control radio transmission path, and the radio telephone is divided into telephone groups corresponding to the line groups. Each radio telephone is provided with means for storing a telephone identification code configured to identify the telephone group, and the telephone identification code is included in a call connection control signal sent from the radio telephone to the switching control device. The switching control device is configured to identify the line group from the wireless telephone identification code and select the fixed telephone network side wired line connected to the wireless telephone from among the lines belonging to the identified line group. The wireless telephone system according to claim 1 or 2, further characterized in that: (4) The line status indicator indicates, by display, etc., the status of the wired line included in the signal indicating the status of the wired line on the fixed telephone network side, which includes the line group identification code corresponding to the identification code assigned to the line status indicator. The wireless telephone system according to claim 3, further characterized in that it is configured as follows. (5) The wireless telephone system according to claim 4, further characterized in that the line status indicator has a wireless telephone fixing unit to which the wireless telephone can be attached and detached. (6) The wireless telephone system according to claim 4, further characterized in that the line status indicator has a charging function for the wireless telephone.