JPH11146457A - Radio subscriber network system and network controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a radio subscriber network controller capable of appropriately transmitting signals for informing the response of a call terminating party- subscriber terminal to a call originating party-subscriber terminal without being affected by the function of a connected subscriber's exchange. SOLUTION: This radio subscriber network controller 3 is provided with a judgement means for judging whether or not control signals for informing the response of a subscriber terminal 4 or 11 of a call terminating party are transmitted from a subscriber exchange 2 connected to the controller 3 for a calling request based on the contents of the calling request generated from the subscriber terminal 11 under the control of the controller; and a control means for controlling the transmission of control signals to the subscriber terminal 11 of a call originating party and also for controlling the setting of a speech path corresponding to the calling request corresponding to the judged result of the judgement means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of connecting a subscriber exchange constituting a public network and a radio base station via a radio subscriber network control device, and partially performing communication between subscriber terminals through a radio channel. The present invention relates to a wireless subscriber network system that can be performed via the Internet.

[0002]

2. Description of the Related Art PHS is one of mobile communication systems.
(Personal Handy-phone System). The PHS has a configuration in which a base station that communicates with a mobile terminal using a wireless channel and a subscriber exchange that houses a subscriber line to which the subscriber terminal is connected are connected via a digital line. This local exchange, together with other local exchanges and transit exchanges, forms a digital network including a common channel signaling network for transmitting control signals and a communication network for transmitting user information.

In such a PHS, when a call request is issued from a subscriber terminal to a mobile terminal, a signal notifying the response of the mobile terminal is transmitted from the mobile terminal via the common channel signal network to the source. Sent to the local exchange that houses the subscriber terminal. The local exchange that has received the message may or may not transmit a signal (response signal) notifying the response of the mobile terminal to the originating subscriber terminal. Some local exchanges do not transmit a response signal to the originating terminal at all. Which case depends on the function of the local exchange.

[0004] Even if a signal notifying the response of the mobile terminal is not transmitted from the local exchange to the subscriber terminal, a telephone call can be made by setting a communication path between the subscriber terminal and the digital network in the local exchange. . Also, since the subscriber terminal does not have a process to be performed in response to the response signal, no problem occurs even if the subscriber exchange does not transmit the signal.

On the other hand, when a call request is issued from the mobile terminal to the subscriber terminal, a signal notifying the response is transmitted from the destination subscriber terminal to the subscriber exchange, and the base station is transmitted along the route. If the local exchange connected to is sent a response, it is received at the base station. Upon receiving this signal, the base station sets up a two-way communication channel using a wireless channel, and always transmits a signal notifying the response of the subscriber terminal to the originating mobile terminal.

In recent years, by introducing technologies and devices used in mobile communication systems such as PHS into a subscriber line (access equipment) accommodated in a subscriber exchange, a subscriber telephone service is quickly and economically provided. A system that can be provided to the public is being studied. In this system, a wireless communication function is provided as an access facility, and WLL (w
ireless local loop).

This WLL is a radio station for connecting a WLL subscriber station, a WLL base station communicating with the WLL subscriber station via a radio channel, and a WLL base station and a subscriber exchange of a digital network. A subscriber network controller. Here, the wireless subscriber network control device has a signal conversion function,
It is connected to the base station for L and connected to the local exchange via the subscriber line. The WLL subscriber station is connected to a subscriber terminal via an analog subscriber line.

[0008] When a call request is issued from a subscriber terminal under the control of a base station connected via a digital line, the wireless subscriber network control device transmits a signal notifying the response of the destination subscriber terminal. , Upon receiving from the local exchange, sets up a communication path in its own device and transmits a signal notifying the response of the destination subscriber terminal to the base station. As a result, a two-way communication path corresponding to the call request is set between the wireless subscriber network controller and the WLL subscriber station.

[0009]

As described above, the local exchange constituting the public network may or may not transmit a signal notifying the response of the destination terminal to the destination. Therefore, when the above-mentioned conventional WLL is connected to such a local exchange, a signal notifying the response of the destination terminal is not transmitted to the WLL subscriber station, so that the communication path is not set. There is a problem that there is. further,
If the calling subscriber terminal is a public telephone terminal, there is a problem that if the signal notifying the response of the called terminal is not transmitted, the public telephone terminal will not be charged at the start of the call. This is because coins are stored at the start of communication in the public telephone terminal in response to reception of a signal notifying a response from the destination terminal.

[0010] It is an object of the present invention to provide a radio subscriber which can appropriately transmit a signal notifying the response of a called subscriber terminal to a called subscriber terminal without being affected by the function of the connected local exchange. An object of the present invention is to provide a subscriber network system and a wireless subscriber network controller used for the same.

[0011]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides at least one wireless subscriber network controller connected to a subscriber exchange constituting a public network via a subscriber line, One or more base stations connected to the wireless subscriber network controller and one or more base stations connected to the base station via a wireless channel and connected to a subscriber terminal via a subscriber line. A wireless local area network (WLL) subscriber station, wherein each of the wireless subscriber network controllers receives a call request from a subscriber terminal under the jurisdiction of the own control apparatus. Determining means for determining whether or not a control signal for notifying the response of the previous subscriber terminal is transmitted from the local exchange connected to the own control device; and Sending the control signal to the user terminal , And provides a wireless subscriber network system, characterized by a control means for controlling the setting of the communication path corresponding to the call request.

According to the present invention, there is provided one or more WLL subscriber stations connected to a subscriber terminal via a subscriber line and one or more base stations connected via a radio channel. And a wireless subscriber network controller connected to a subscriber line of a subscriber exchange constituting a public network, based on a content of a call request issued from a subscriber terminal under the control of the own controller. Determining means for determining whether or not a control signal for notifying a response of a called subscriber terminal to the call request is transmitted from a local exchange connected to its own control device; and Control means for controlling the transmission of the control signal to the originating subscriber terminal and the setting of a communication path corresponding to the call request in accordance with the determination result of Provide equipment.

[0013]

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

FIG. 1 is a diagram showing a configuration of a wireless subscriber network system according to an embodiment of the present invention. In the figure, the network system includes a wireless subscriber network control device 3, a WILL base station 10, a WILL
And is connected to the local exchange 2 constituting the public network 1.

Each of the local exchanges 2 is connected to each other via a dedicated line, and is connected to a public network 1 together with a relay exchange (not shown).
Is configured. Also, each local exchange 2 has a subscriber terminal 4
Etc. are accommodated. In this subscriber line 9, a message for a conventional analog line is transmitted.

Each wireless subscriber network control device 3 comprises:
Any one of the subscriber exchanges 2 via a plurality of subscriber lines 9
And further connected to a plurality of WILL base stations 10 via a digital line 12.

Each WILL base station (CS: Cell Statio)
n) 10 is a unique wireless zone (hereinafter referred to as a cell) 5
And performs communication via a wireless channel with a WILL subscriber station (hereinafter, referred to as PS) 7 located in the cell 5.

Each PS 7 accommodates a subscriber line 8 to which a subscriber terminal 11 is connected, and stores communication information of the subscriber terminal 11
It communicates with the WLL base station 10 via a wireless channel. The message for the analog line is also transmitted on the subscriber line 8. Further, in communication between the PS 7 and the wireless subscriber network control device 3, a message for a digital line is used.

In this network system, a paging area 6 (location registration area) is formed by one or more cells 5.
Are formed. Each wireless subscriber network control device 3 causes a call signal to be transmitted to all PSs 7 in the area 6 where the PS 7 of the subscriber terminal 11 is located when receiving a call to the subscriber terminal 11 under the jurisdiction. Next, the base station 10 is controlled.

The functions of the local exchange 2 relating to the transmission of a signal (hereinafter referred to as a response signal) for notifying the response of the destination include, for example, a function that does not transmit a response signal at all, a non-charging call (toll-free service, etc.). , A response signal is not transmitted only to the public telephone terminal, or a response signal is transmitted only to the call from the subscriber line 9 for the public telephone terminal.

When receiving a call setting request from the subscriber terminal 11, the wireless subscriber network control device 3 determines whether or not a response signal is transmitted from the local exchange 2 to the call in response to the call setting request. It has a function of making a determination based on the content and a function of autonomously transmitting a response signal according to the result of this determination. With this function, in the present network system, a response signal is appropriately transmitted to the originating subscriber terminal 11 regardless of what function the subscriber exchange 2 has, and a communication path is set.

FIG. 2 shows the configuration of the wireless subscriber network control device 3.

The wireless subscriber network controller 3 includes a switch 20 for exchanging messages and a switch 2
0, a plurality of line interfaces 21a-2 connected to
1n and 22a to 22n, a processor 23, a memory 24, and a database 25. These components are interconnected by an internal bus 26.

The line interfaces 21a to 21n are:
Each is connected to the base station 10 via a digital line. On the other hand, the line interfaces 22a to 22n have an analog / digital signal conversion function and are connected to the local exchange 2 via a plurality of subscriber lines.

The memory 24 has a response signal determination processing program 70 for determining whether a response signal is transmitted from the local exchange 2, a response signal transmission processing program 30 for autonomously transmitting a response signal, Various programs such as a call processing program and data are stored.

The database 25 specifies the authentication information of the subscriber terminal, the subscriber information for determining the call request that can be accepted, and the subscriber line 9 used for communication of each subscriber terminal 11. And the exchange information for defining whether the connected subscriber exchange 2 transmits a response signal corresponding to each identification number of the originating and destination subscriber terminals are stored in advance. Have been.

In the following description, N is used between the subscriber terminal 11 and the WLL subscriber station PS7 and between the wireless subscriber network controller 3 and the local exchange 2.
A message specified by a subscriber line signaling method (analog method) for a telephone network specified by TT technical reference materials is used for call control. Further, between the PS 7 and the WLL base station 10, RCR STD-28
Utilizing the message defined in the second edition, the WTC base station 10 and the wireless subscriber network controller 3 communicate with each other according to TTC JT-Q. It is assumed that a message specified in 931-b is used. In this case, a protocol identifier, a call number, a message type, and the like are set in the response signal transmitted from the wireless subscriber network control device 3. Note that the form of the message is not limited to this.

FIG. 3 shows a flowchart of the response signal determination processing program 70.

When the processor 23 of the wireless subscriber network control device 3 receives a call request that can be accepted from the subscriber terminal 11 under its jurisdiction, the processor 23 executes the response signal determination processing program 70. In this process, the wireless subscriber network control device 3 first searches the exchange information in the database 25 based on the calling subscriber number and the called subscriber number included in the received message, It is determined whether a response signal has been transmitted by the exchange 2 (steps 71 and 72). If there is a response signal, a selection signal is transmitted to the local exchange 2 (step 73). Then, after receiving the response signal from the local exchange 2, the communication path corresponding to the call setting request is connected in the own device 3 (step 74), and the response signal is transmitted to the request source WLL base station 10. (Step 75). If it is determined in step 71 or 72 that no response signal has been transmitted, the processor executes the response signal transmission processing program 30.

Next, the above determination processing (steps 71 and 7)
The specific example 2) will be described.

In this determination process, first, the database 2
The function of the local exchange 2 is checked from the exchange information of No. 5. Thereby, for example, when the connected local exchange 2 does not transmit a response signal at all, the radio network controller 3 determines that no response signal is transmitted for all call requests. judge.

When the subscriber exchange 2 transmits a response signal only to a call from the subscriber line 9 for a public telephone terminal, the radio subscriber network controller 3
Checks from the identification number of the calling subscriber terminal 11 included in the call request whether the subscriber line 9 used for the communication is a line for a public telephone. It is determined, and otherwise, it is determined that there is no response signal.

Further, when information for designating a non-charging call is set in the identification number of the called subscriber terminal, it is determined that there is no response signal. The subscriber terminal 11, which is a public telephone terminal, recognizes whether or not the call is a non-charging call, and does not accept a response signal to be sent if the call is a non-charging call. .

FIG. 4 shows a response signal transmission processing program 30.
The flowchart of FIG.

In this process, the wireless subscriber network control device 3 first searches the line information in the database 25 based on the calling subscriber terminal identification number included in the received message, and subscribes to the calling source. The subscriber line 9 is determined, and a selection signal in which the destination subscriber terminal identification number included in the received message is set is transmitted to the local exchange 2 using the subscriber line 9 (step 31). Then, a timer is started to set a timing for transmitting the response signal to the WLL base station 10 (step 32). When a predetermined time has elapsed and the timer has expired, a communication path corresponding to the call setting request is connected in the own device 3 (step 33),
A response signal is transmitted to the WLL base station 10 (step 34). However, in step 33, if the downlink communication path has already been set at the time of execution, only the uplink communication path is set. Thus, the setting of the two-way communication path is completed.

Next, a procedure of a call setting process performed in the present network system in response to a call request from the subscriber terminal device 11 will be described with reference to FIGS.

FIG. 5 shows a sequence of a call setting process when a response signal is not sent from the local exchange 2. As shown in the figure, the originating subscriber terminal 11 first receives a call signal 4
1 is transmitted to the PS 7, and after confirming the dial tone (DT) 42 from the PS, the selection signal 43 is transmitted. Upon receiving the selection signal, the PS 7 stores the called number (44) and establishes the radio link channel 45 with the WLL base station 10 (hereinafter, referred to as calling CS) forming the cell 5 at the current position. rear,
A call setup message 46 is transmitted to the calling CS 10. Departure CS
10 is a SETU having the same content as the received call setup message.
P47 is transmitted to the wireless subscriber network control device 3.

Upon receiving the SETUP 47, the wireless subscriber network control device 3 checks the subscriber information stored in the database 25 in the own device 3 in advance and determines whether or not a call can be made (that is, it can accept a call setting request). (48) is determined. If the call is possible, the wireless subscriber network control device 3 transmits a call setting acceptance message 49 to the calling CS 10. After receiving the message 49, the calling CS 10 transmits a call setting acceptance message 50 to the PS 7. Next, the wireless subscriber network control device 3 reads out the authentication information of the calling subscriber terminal stored in the database 25 in the own device 3 in advance, and performs authentication processing with the PS 7 (51). As a result of this authentication process,
When it is confirmed that the calling subscriber terminal 11 is a valid terminal, the subscriber exchange 2 is connected to the subscriber line 9 corresponding to the calling subscriber terminal identification number included in the call setup message 46. The transmission signal 52 is transmitted to. Immediately before or immediately after this transmission, the response signal determination process shown in FIG.
It is determined that there is no transmission of a response signal in the connected local exchange 2. Then, the selection signal 53 is transmitted to the local exchange 2
Send to

Thereafter, the radio network controller 3 transmits a progress display message (PROG) 54 indicating the provision of the in-band tone to the PS 7 via the originating CS 10. Thereafter, a ringing tone (RBT) 56 indicating that the called subscriber terminal is being called until a call can be made.
Is transmitted from the local exchange 2 connected to the destination subscriber terminal to the originating subscriber terminal 11.

After transmitting the progress display message 45, the wireless subscriber network controller 3 responds to the response message (CO
NN) 57 to the originating CS 10. Upon receiving this message, the calling CS 10 sets a communication path in the network and transmits a response message 58 to the PS 7. The PS 7 that has received this message sets up a two-way communication channel. However, if the downlink communication path has already been set before this setting, only the uplink communication path is set. Then, after a response signal 59 for notifying that the called subscriber terminal has responded is sent to the local exchange, a call can be made.

FIG. 6 shows a sequence of a call setting process when a response signal is sent from the local exchange 2. In this process, the wireless subscriber network control device 3 determines that a response signal is sent in the determination 60 of the presence or absence of a response signal, waits for a response signal from the local exchange 2, and connects the CONN 62 to the WLL base station 10. Send to Then, the response signal 64
Is sent to the subscriber terminal 11, and then a call becomes possible. Other processes are the same as those in FIG.

In this embodiment, the originating subscriber terminal 11
Although the provision of the in-band tone to the user is notified using the progress display message, the notification may be performed using a call setting reception message or a call message.

Further, in this embodiment, information defining the function of the exchange is set as the exchange information. Instead, the information corresponding to the identification numbers of the subscriber terminals of the caller and the receiver is set as follows. Information indicating whether the subscriber exchange 2 transmits a response signal to each of these calls may be set. In this case, the determination result can be obtained by simply searching for the exchange information.

As described above, in the wireless subscriber network system of the present embodiment, the presence / absence of transmission of a response signal in the subscriber exchange 2 depends on the identification numbers of the calling subscriber terminal and the called subscriber terminal. Even if there is, a response signal is appropriately transmitted to the calling subscriber terminal 11, and a bidirectional communication path is set between the calling subscriber terminal and the called subscriber terminal.

Next, another embodiment of the present invention will be described with reference to FIGS.

In the present embodiment, the function related to the transmission of the response signal described in the above embodiment is applied to a more general communication network system. In this network system, communication between a subscriber terminal and a subscriber exchange connected to an analog line is performed via a digital line on the way.

FIG. 7 shows the overall configuration of the network system of this embodiment. As shown, the network system has a communication node A81 accommodating a subscriber line 83 of a subscriber terminal 82, and a communication node B80 connected to the subscriber exchange 2 via a plurality of subscriber lines 84. . Here, the local exchange 2 is the same as that described in FIG. 1 and constitutes a public network. Communication node A81
And the communication node B 80 are connected by a wireless channel or a wired digital line. As the wired line, for example, an ISDN line or an optical communication line can be used.

In each of the subscriber lines 83 and 84, messages for analog lines are exchanged. Communication node A
A digital line message is transmitted between the communication node 81 and the communication node B80.

As the communication node B 80, an access node having a function of relaying between lines having different communication modes can be used. As the communication node A81, a WLL subscriber station can be used when a connection is made through a wireless channel.

The communication node B 80 can have the same configuration as that described with reference to FIG. 2 when the connection with the node A 81 is made via a wired line. Communication node A
When the connection with the communication node 81 is made via a wireless channel, the communication node B 80 can have a configuration in which a communication device for performing wireless communication is added.

The communication node B 80 has a function of determining whether or not a response signal is transmitted by the connected local exchange 2 in the same manner as the apparatus of FIG. And a function of transmitting These functions are realized by processing similar to the processing described with reference to FIGS.

FIG. 8 shows a sequence of a call connection process performed by the network system when a call request is issued from the subscriber terminal 82. In this figure, the local exchange 2
Indicates that no response signal is transmitted.

When a call request 90 is transmitted from the calling subscriber terminal 82 to the node A 81, the communication node A 81 having received this request transmits a call setting message 91 to the communication node B 80.
Send When receiving the call, the communication node B 80 transmits a call setting acceptance message 92 to the node A 81 when the call is possible.
Is transmitted, and the response signal presence / absence determination processing described with reference to FIG.
It is determined whether there is a response signal transmission to 0 (97). If it is determined that no response signal is transmitted, a timer is started and a signal (call signal) indicating a call request to the subscriber exchange 2 via the subscriber line 84 corresponding to the calling subscriber terminal 82 (call signal).
Transmit 93. Then, when a certain period of time has elapsed from the transmission of the calling signal, the selection signal 94 is transmitted to the local exchange 2. When the timer expires after the transmission of the selection signal 94, the communication node B80 sets up a two-way communication path in its own node B80, and transmits a response message 96 to the node A81. The communication node A81 that has received the response signal 95
A two-way communication path is set in the own node A81. However,
At this time, if a downlink communication path has already been set up with the communication node B80, only an uplink communication path is set. Then, at the local exchange 2,
After the signal notifying the response of the called subscriber terminal is received, the call becomes possible.

If it is determined in the above-mentioned response signal presence / absence determination (97) that the subscriber exchange 2 transmits a response signal, the node B 80 waits for the reception of the response signal and transmits the bi-directional message to its own node B 80. The communication path is set, and a response message 96 is transmitted to the node A81. Then, the node A81 transmits a response signal 96 to the subscriber terminal 82, so that a telephone conversation becomes possible.

As described above, in the network system according to the present embodiment, the presence / absence of transmission of a response signal in the subscriber exchange 2 differs depending on the identification numbers of the calling subscriber terminal and the called subscriber terminal. A response signal is appropriately transmitted to the calling subscriber terminal 82, and a bidirectional communication path is set between the calling subscriber terminal 82 and the called subscriber terminal.

[0056]

As described above, according to the present invention, a signal for notifying a response of a called subscriber terminal can be properly transmitted to a called subscriber without being influenced by the function of a subscriber exchange to be connected. A wireless subscriber network system capable of transmitting to a terminal and a wireless subscriber network control device used for the wireless subscriber network system can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a wireless subscriber network according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration example of a wireless subscriber network control device 3.

FIG. 3 is a flowchart of a response signal determination process performed by the wireless subscriber network control device 3;

FIG. 4 is a flowchart of a response signal transmission process performed by the wireless subscriber network control device 3;

FIG. 5 is a sequence diagram showing a call setting procedure when a response signal is not transmitted from the local exchange 2;

FIG. 6 is a sequence diagram showing a call setting procedure when a response signal is transmitted from the local exchange 2.

FIG. 7 is a diagram showing a configuration of a communication network according to another embodiment of the present invention.

FIG. 8 is a sequence diagram showing an example of a call setting procedure in the network of FIG. 7;

[Explanation of symbols]

2: subscriber exchange, 3: wireless subscriber network controller, 4, 11, 82: subscriber terminal, 5: wireless zone (cell), 6: paging area, 7: WLL subscriber station,
8, 9, 83, 84: subscriber line, 10: WLL base station, 12: digital line, 30: response signal transmission processing program, 70: response signal determination processing program.

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI H04Q 7/30

Claims (10)

[Claims] 1. One or more wireless subscriber network controllers connected to a subscriber exchange constituting a public network via a subscriber line, and one or more wireless subscriber network controllers connected to the wireless subscriber network controller. A base station, and one or more WLL subscriber stations connected to the base station via a radio channel and connected to a subscriber terminal via a subscriber line; The control device, based on the content of the call request issued from the subscriber terminal under the control of its own control device, generates a control signal for notifying the response of the called subscriber terminal to the call request in response to the call request. Determining means for determining whether a signal is transmitted from a local exchange connected to a control device; transmitting the control signal to a calling subscriber terminal in accordance with the determination result of the determining means; Set up a call path to respond to requests Wireless subscriber network system characterized by having a Gosuru control means. 2. A public network connected to one or more base stations connected via a radio channel to one or more WLL subscriber stations connected to a subscriber terminal via a subscriber line. In the wireless subscriber network control device connected to the subscriber line of the local exchange, the call request is issued based on the content of the call request issued from the subscriber terminal under the control of the own control device. On the other hand, a judging means for judging whether or not a control signal for notifying the response of the called subscriber terminal is transmitted from the local exchange connected to the own control device; Control means for controlling transmission of said control signal to the original subscriber terminal and setting of a communication path corresponding to said call request, said wireless subscriber network control device comprising: 3. The wireless subscriber network control device according to claim 2, further comprising storage means for storing information defining handling of the control signal in a local exchange connected to the own control device, The determination means, the identification number of the calling subscriber terminal and the identification number of the called subscriber terminal included in the call request,
The wireless subscriber network control device, wherein the determination is performed based on information stored in the storage means. 4. The wireless subscriber network control device according to claim 2, wherein said control means receives a control signal from said local exchange when said determination means determines that a control signal is to be transmitted. As an opportunity,
A communication path corresponding to the call request is set in the apparatus itself, and the control signal is transmitted to the base station as a trigger for setting a communication path. If it is determined that the communication request is not transmitted, a communication path corresponding to the call request is set in the own device without receiving a control signal from the local exchange, and a communication path is set to the base station. A wireless subscriber network control device for transmitting the control signal as a trigger. 5. One or more access nodes connected to a subscriber exchange constituting a public network via a subscriber line, and connected to the access node and connected to a subscriber terminal via the subscriber line. One or more subscriber stations to be connected, wherein each of the access nodes receives a call request from a subscriber terminal under the control of the own node and responds to the call request in response to the call request. Determining means for determining whether or not a control signal for notifying the response of the previous subscriber terminal is transmitted from the local exchange connected to the own node; and, according to the determination result of the determining means, the originating subscriber Control means for controlling transmission of the control signal to a terminal and setting of a communication path corresponding to the call request. 6. The communication network system according to claim 5, wherein said local exchange and said access node are connected by an analog line, said access node and said subscriber station are connected by a digital line, A communication network system, wherein a station and the subscriber terminal are connected by an analog line. 7. An access node connected to one or more subscriber stations connected to a subscriber terminal via a subscriber line, and a subscriber line of a subscriber exchange constituting a public network, comprising: The control signal for notifying the response of the called subscriber terminal to the calling request based on the contents of the calling request issued from the subscriber terminal under the jurisdiction of the subscriber connected to the own node. Determining means for determining whether the signal is transmitted from the exchange; transmitting the control signal to a calling subscriber terminal according to the determination result of the determining means; and setting a communication path corresponding to the call request And a control unit for controlling the access node. 8. An access node according to claim 7, wherein said storage means stores information defining the handling of said control signal in a local exchange connected to said own node.
Furthermore, the determination means, the identification number of the calling subscriber terminal and the identification number of the called subscriber terminal included in the call request,
An access node for performing the determination based on information stored in the storage means. 9. The access node according to claim 7, wherein when the determination unit determines that a control signal is transmitted, the control unit receives the control signal from the local exchange.
A communication path corresponding to the call request is set in the own node, and the control signal serving as a trigger for setting a communication path is transmitted to the base station; and If it is determined that the communication request is not transmitted, a communication path corresponding to the call request is set in the own node without receiving a control signal from the local exchange, and the base station is set to set a communication path. An access node for transmitting the control signal as a trigger. 10. A public network connected to one or more base stations connected via a radio channel to one or more WLL subscriber stations connected to a subscriber terminal via a subscriber line. A storage medium storing a program to be executed by the wireless subscriber network control device connected to the subscriber line of the local exchange, which is output from a subscriber terminal under the control of the own control device. On the basis of the content of the call request, a control signal for notifying a response of the called subscriber terminal to the call request,
It is determined whether the signal is transmitted from the local exchange connected to the own control device, and the control signal is transmitted to the calling subscriber terminal according to the determination result, and the call corresponding to the call request is performed. A recording medium for causing a wireless subscriber network control device to perform a process of controlling a path setting.