KR0135206B1 - Pbx - Google Patents

Abstract

The present invention relates to an exchange system, and in particular, a wired / wireless service apparatus of an exchange system that provides a user with a wired / wireless function in an premises exchange system to provide an incoming / outgoing call function of an premises exchange system to a user located in an area where wired lines cannot be installed. It is about a method.

The conventional switching device has a problem in that it is not possible to provide a general subscriber service to users in the area where the installation of the wireline is impossible because the wireline connection between the phone and the subscriber circuit of the subscriber is essential.

The present invention provides a service for a call connection by laying a line through a wireless channel to a user who can not place a wire line in the exchange system provides reliability in system operation.

Description

Wired and wireless service apparatus and method of the exchange system

1 is a block diagram of a wired and wireless service apparatus of an exchange system according to the present invention;

2 is a flowchart for forming a call path for an incoming call of a wireline subscriber according to the present invention;

3 is a call connection flow diagram for a call connection request of a wireless line subscriber according to the present invention;

4 is a call connection flowchart for a call connection request of a wireline subscriber according to the present invention;

5 is a flowchart illustrating a call path connection according to an off-hook of a wireless line subscriber according to the present invention.

* Description of the symbols for the main parts of the drawings *

10: main exchange device, 11: trunk line connection,

12, 22: control unit, 12a: trunk line call,

12b: internal call, 12c: wireless call,

13, 23: switching unit, 14: wireless connection unit,

15: extension connection, 20: receiver,

21: RF (Radio Frequency) connection part, 24: line connection part,

A, B, C, D: terminal, 30: base station

The present invention relates to an exchange system, and in particular, a wired / wireless service apparatus of an exchange system that provides a user with a wired / wireless function in an premises exchange system to provide an incoming / outgoing call function of an premises exchange system to a user located in an area where wired lines cannot be installed. It is about a method.

In the conventional general premises switching system, the connection from the subscriber circuit of the switching device should be connected through the regular wire line during the landline period of the place where the subscriber is located. At this time, when the subscriber off-hook the receiver for the call, the signal is transmitted to the subscriber circuit of the switching device through the subscriber line connected to the telephone so that the switching device provides a general calling function such as providing a dial tone. In addition, when a call is made to the subscriber from an external subscriber or another internal subscriber, the switching device transmits a ring signal to the corresponding telephone through the wired line of the subscriber circuit to which the telephone of the subscriber is connected to notify the incoming call.

Such a conventional switching device has a problem in that it is not possible to provide a general subscriber service to users in an area where the installation of the wireline is impossible because the wireline connection between the subscriber's telephone and the subscriber circuit is essential.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and is intended to provide a general subscriber service to a user located in an area where it is impossible to install a wired line by connecting a wireless line through a base station and a receiving device.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the present invention provides a main exchange apparatus 10 for providing basic services of a switch and other various kinds of subscriber function services such as trunk line connection and extension call service provided in a general wired switch, and a wireless connection. It comprises a receiving device 20 for transmitting and receiving a signal message through the base station, and the base station 30 for transmitting and receiving messages between the main switching device 10 and the receiving device 20.

The main exchange apparatus 10 includes a trunk line connecting portion 11 for connecting a plurality of trunk lines connected to the main exchange apparatus 10: a control unit 12 for controlling overall operations for trunk lines and stations, extension lines, and wired / wireless calls. And: a switching unit 13 for switching the connection of a call path to a terminal for call connection according to a control signal of the control unit 12, and: a wireless connection unit 14 for connecting a plurality of base stations 30; It comprises a station connection unit 15 for connecting the main exchange device 10 and a plurality of station terminals connected via a wired line.

The base station 30 transmits a voice and data signal through a wired line with the main switching device 10, and occupies a radio channel through the RF connection 21 which is not using the message sent from the main switching device 10. Sends the message to the receiving device 20, receives the response message from the receiving device 20, and transmits the message to the main switching device 10, detects the transmission of the message from the receiving device 20, and receives the corresponding message. Then, the message is transmitted to the main switching device 10 and a response message is transmitted from the main switching device 10 to the receiving device 20.

The receiving device 20 is an RF connection unit 21 for transmitting and receiving a radio signal with the base station 30, a control unit 22 for controlling the overall operation of the receiving device 20, and under the control of the control unit 22 And a switching unit 23 for performing call processing in the reception apparatus 20, and a line connecting unit 24 for connecting a plurality of landline telephones to provide subscribers with services such as incoming / outgoing calls.

Referring to the operation of the present invention configured as such a function as follows.

In FIG. 1, when subscriber D calls subscriber A, the internal call portion 12b of the controller 12 transmits the call request message to the radio call portion 12c as shown in FIG. 4 (step 4.1). The call part 12c transmits the incoming signal message to the radio access unit 14 (step 4.2), and the incoming signal message is transmitted to the base station 30 to which the subscriber A is connected via the wired line (step 4.3).

Accordingly, the base station 30 occupies an unused channel and transmits an incoming call message as a radio signal for the receiving device 20 to receive (step 4.4), and then sends the incoming signal message to the receiving device 20. The receiving operation will be described below with reference to FIG.

When the RF connection unit 21 of the reception apparatus 20 detects an incoming signal message received from the base station 30 while monitoring the wireless channel (step 2.1), the controller 22 after completing the reception of the corresponding incoming signal message. Send an incoming call message to announce the incoming call (step 2.2).

Then, the control unit 22 of the reception apparatus 20 occupies the RF channel and transmits the incoming response signal message to the base station 30 through the corresponding RF channel in response to the incoming signal message (step 2.4). Through the channel, the base station 30 receives an incoming response signal message as shown in FIG. 4 (step 4.5), and transmits it to the wireless connection unit 14 via the wired line (step 4.6). An incoming reply signal message is transmitted to the radio call unit 12c to indicate that the response to the incoming call message is successful by the connection of the wireless channel (step 4.7).

On the other hand, the control unit 22 of the receiving device 20 of FIG. 2 sends an incoming response signal message to the RF connection unit 21 and searches the subscriber information database (step 2.3). The line connection unit 24 to which subscriber A is connected is connected. ) And send a message to subscriber A informing him of the call, causing subscriber A's landline to ring (step 2.5).

If there is an off-hook in response to the call from subscriber A (step 2.6), the line connection unit 24 detects this and sends an off-hook message to the control unit 22 to indicate that there is a response (step 2.7). The controller 22 sends an off-hook response signal to the base station 30 through the above-described RF channel (step 2.8), and applies a signal to the switching unit 23 requesting a switching connection to a call. (Step 2.9) and switching connection (step 2.10), a communication path is established between the RF connection 21 specified above and the subscriber A of the line connection 24 (step 2.11) and the subscriber A is connected to the RF connection after the switching connection is confirmed. It is possible to listen to the voice signal transmitted from the main switching apparatus 10 through the wireless channel already set in step 21 (step 2.12).

In step 2.8, the base station 30, which has received the response signal informing the off-hook of the reception apparatus 20 (step 4.8), transmits the response signal message to the radio access unit 14 as shown in FIG. (Step 4.9), the radio access unit 14 forwards to the radio call unit 12c (step 4.10), and the radio call unit 12c sends the call response signal to the internal call unit 12 of the subscriber D that has sent the incoming signal. Send to announce that subscriber A is off-hook (step 4.11) and then switch the call path between subscriber D and subscriber A (step 4.12).

Then, when the call between subscriber A and subscriber D is terminated and subscriber A is on-hook as shown in the second diagram (step 2.13), the line connection unit 24 detects this and sends an on-hook message to the controller 22. (Step 2.14) The control unit 22 sends an end request signal message to the RF connection unit 21 (step 2.15) and transfers the release signal to the switching unit 23 to terminate the call. (Step 2.16)

As shown in FIG. 2, when receiving the termination request signal message fired from the receiving apparatus 20 (step 4.13), the base station 30 notifies the radio access unit 14 as shown in FIG. 4 to notify the end of the call (step 4.14), the radio access unit 14 transmits the termination request signal message to the radio call unit 12c (step 4.15), and the radio call unit 12c receives the termination confirmation message through the radio connection unit 14 (step 4.16). It is sent to the base station 30 (step 4.17) and sent to the receiving device 10. In addition, the radio call unit 12c sends a release message to the internal call unit 12b of the subscriber D and informs the switching unit 13 of the call release so that the call path is disconnected (step 4.18).

At this time, in FIG. 2, the RF connection unit 21 fires the corresponding termination request signal message to the base station 30, waits for the termination confirmation signal message from the corresponding base station 30, and terminates the call after receiving the termination confirmation message. (Step 2.17)

Next, a case in which subscriber A calls subscriber D using FIG. 3 and FIG. 5 will be described in detail.

In Fig. 3, when subscriber A off-hooks the handset to make a call, the line connection 24 detects the off-hook (step 3.1) and sends an off-hook message (3.2) to the control unit 22 to notify it. (Step 3.2)

Accordingly, the control unit 22 sends an outgoing request message to the RF connection unit 21 (step 3.3), causing the RF connection unit 21 to send an unused channel selection signal to the base station 30 (step 3.4). In FIG. 5, the base station 30 detects an unused channel selection signal during channel detection (step 5.1), and after reception is completed, adds an additional message such as a channel number to the corresponding message, and the wireless access unit ( 14) to notify that there is a call request from the receiving device 20 (step 5.2).

Accordingly, the radio call unit 14 notifies the originating request message to the radio call unit 12c in the control unit 13 in the main switching apparatus 10 (step 5.3), whereby the radio call unit 12c responds to the origination request response. The message is sent to the base station 30 through the wireless access unit 14 (step 5.4) (step 5.5) to be received by the receiver 20. (step 5.6) At this time, the radio call unit 12c After sending the call request response message, the caller transmits a dial tone through the call path of the base station 30 so that the subscriber A of the receiving apparatus 20 connected to the base station 30 through a wireless channel can hear the dial tone (step 5.6). Receiving the originating request response message launched from the base station 30 (step 3.19), the RF connection 21 in the receiving device 20 transmits to the control unit 22 as shown in FIG. 3 (step 3.5). The control unit 22 in the receiving device 20 requests the switching unit 23 for a switching connection between the subscriber A and the RF connection unit 21. By the switching connection (step 3.6), by connecting the call path, the dial tone sent from the main switching device 10 is transmitted to the subscriber A. (step 3.7) At this time, the switching unit 23 confirms the connection and the control unit 22 (Step 3.8).

In this way, subscriber A hears a dial tone and presses digit, detects a digit tone in line connection unit 24 (step 3.9) and transmits a digit message to control unit 22 (step 3.10) as shown in the third diagram. 22 transmits to the base station 30 via the RF connection 21 (step 3.11). (Step 3.17)

Thus, as shown in FIG. 5, the base station 30 transmits the radio call unit 12 in the main exchange apparatus 10 to the radio call unit 12c (step 5.7) through the radio connection unit 14 in the main exchange apparatus 10 (step 5.7). 12c analyzes the digit message (step 5.9) and sends a call request message to extension 12b to notify subscriber D of the call (step 5.10).

Then, if there is a response from the subscriber D to the call, the internal call unit 12b detects this and transmits a call request response signal to the radio call unit 12c (step 5.11), where the call path of the subscriber D and the subscriber A occupy it. The call path of the base station 30 is connected so that a call path is formed between the subscriber D and the subscriber A (step 5.12).

After this process, if the subscriber A is on-hook, the line connection unit 20 detects this in step 3 (step 3.12) and applies an on-hook message to the control unit 22 (step 3.13). The termination request signal is applied to the RF connection unit 21 (step 3.14) and the switching unit 23 is requested to release the switching to release the communication path (step 3.15), and the RF connection unit 21 sends the termination request signal to the base station 30. (Step 3.18).

Accordingly, in FIG. 5, the base station 30 receives the termination request signal sent from the receiving device 20 (step 5.19) through the wireless connection unit 14 (step 5.13). 12c) (step 5.14), the radio call unit 12c terminates the calling signal function by sending a release message to the internal call unit 12b of the subscriber D (step 5.17), and sends a termination confirmation message to the radio access unit 14; (Step 5.15) to the base station 30 (step 5.16), the base station 30 emits an end confirmation signal to the RF connection 21 of the receiver 20 (step 5.20).

In this way, in Fig. 3, the control unit 22 receives the termination confirmation signal through the RF connection unit 21 to terminate the call (step 3.16).

In addition, the case where an incoming request is received from the local line call 12a of FIG. 1 to the radio call unit 12c is also processed according to the above-described operation.

As described above, the present invention provides a service for a call connection by providing a line through a wireless channel to a user who cannot place a wired line in an exchange system, thereby providing reliability in system operation.

Claims (5)

A switching system comprising: a main switching device that provides trunk line connection, extension call service, and various subscriber function services; a plurality of receiving devices that transmit and receive a predetermined message through a wireless channel connection: through the main switching device and a wired line. And a plurality of base stations which transmit and receive voice and data signals, transmit a message sent from the main switching apparatus to the receiving apparatus by occupying a wireless channel, and receive a response message from the receiving apparatus and transmit the response message to the corresponding main switching apparatus. Wired and wireless service device of the exchange system, characterized in that. 2. The apparatus of claim 1, wherein the main switching apparatus includes an internal call unit performing a connection with a subscriber station, a trunk line calling unit performing a connection with a trunk line, and a wireless call unit performing a connection with the receiving device. A control means for switching a connection by a call to an extension, a trunk line, or a wireless terminal for a call connection under the control of the control means: connecting the base station and a predetermined connection with the receiver through the wireless channel. Wireless connection means for transmitting and receiving messages; and trunk line connecting means for connecting a plurality of trunk lines under control of said control means; and trunk line connecting means for connecting a plurality of trunk lines under control of said control means. Wired and wireless service device of the exchange system. 2. The apparatus of claim 1, wherein the receiving apparatus comprises: RF connection means for transmitting and receiving voice and data signals to and from the base station and a radio channel; control means for controlling a call connection processing operation of the receiver; And switching means for performing call processing; and line connection means for connecting a plurality of subscriber stations to connect outgoing and incoming operations. In the wired / wireless service method of an exchange system for calling the subscriber station from the station terminal, when a call request message is applied to a call request from the station terminal and an incoming call message is transmitted, the incoming call message is occupied by the wireless channel. A first step of transmitting a response signal and transmitting an incoming ring to the subscriber station analyzed through subscriber information retrieval: after performing the first process, detecting an off-hook of the subscriber station and granting an off-hook message A second process of transmitting a response signal message for this and requesting a connection through a call; A third process of performing a call by accessing a call path through the wireless channel and detecting whether the subscriber station is on-hook after performing the second process; And a fourth process of sending a termination request signal message to the extension terminal to receive a termination confirmation signal and receiving a termination confirmation signal to cut off a call when the on-hook is detected in the third process. Wired and wireless service method. In a wired / wireless service method of an exchange system calling an extension terminal from an existing subscriber station, when an off-hook signal from the subscriber station is detected and an outgoing request message is sent, an unused channel selection signal is transmitted to transmit the radio channel. Occupying and sending a dial tone and simultaneously sending a response signal for a call request; After performing the first process, if the response signal for the outgoing request is detected, the switching connection is connected to the communication path to confirm the connection, the digit tone is detected from the subscriber station for the outgoing tone, and the digit message is transmitted. Analyzing and sending a call request message and transmitting a response signal thereto to form a call path; When the on-hook signal for the end of the call is detected after performing the second process, the end request signal is sent and the connection is disconnected to the call, and then the release message is sent to the extension terminal and the end confirmation signal is sent. And a third process of terminating channel occupancy.