KR20000026414A - Method for receiving base station for cordless telephone generation 2 (ct-2) public use - Google Patents

Abstract

PURPOSE: A method for receiving a base station for CT-2(Cordless Telephone generation 2) base public use is provided to register a present place in the base station only with a dial number, to directly receive through the base station from an existing PSTN(Public Switched Telephone Network), without a control apparatus of the base station, and to speak over the telephone only with a radio frequency(RF) channel, without using a line between terminals, located in the calling scope of the base station. CONSTITUTION: A method for receiving a CT-2(Cordless Telephone generation 2) comprises the steps of: analyzing received data by a keypad; analyzing the data through an analysis table with a dial type, which a base station is set up in a database by the analysis; deciding whether a line of a PSTN(Public Switched Telephone Network) capable of allocating exists, to receive when the analyzed result is the same; transmitting/displaying a message into a terminal, to display a line number of the PSTN and an extended number when the line of the PSTN exists; registering a location registration list of the base station.

Description

2nd generation cordless telephone public base station

The present invention relates to a second generation cordless telephone generation (CT-2) base station supplementary service, and in particular, to a radio frequency (RF) call channel and a general public switched telephone network. The present invention relates to a method for receiving a CT-2 public base station by a CT-2 base station having a public switched telephone network (PSTN).

CT-2 refers to a digital cordless telephone developed in the UK in 1989 and adopted as a provisional European telecommunication standard. This CT-2 is the first to adopt a time division duplex method. By the end of 1991, the first products under this standard began to be distributed in countries such as the UK, Germany, France and Singapore. The CT-2 can be used as a cordless telephone for home use, as well as connecting to a telepoint base, which is a preliminary stage of the Personal Communication Service (PCS). Therefore, it is possible to talk with a general telephone on an outdoor road or the like. In addition, it can be used as a portable incoming / outgoing telephone in an office or a factory where a wireless PA-BX is installed. The company is also developing the CT-2 +, which adds handover and automatic roaming capabilities to the CT-2.

The CT-2 system was originally developed to service outgoing voice data. Therefore, data service was not conceived. However, in order to provide a wireless data service, a temporary data communication is used by combining a data modem with a terminal (CPPless Portable Part: CPP).

The present invention was devised to solve the problems of the prior art operating as described above, and an object of the present invention is to provide a method for receiving a CT-2 public base station for the convenience of a CT-2 user.

Other objects and advantages of the present invention will become more apparent from the following detailed description of the invention and the accompanying drawings.

1 is a flow chart illustrating the registration of the location of the terminal to the base station for the CT-2 public base station incoming method of the present invention.

Figure 2 is a block diagram of the incoming call setup by the wired network to the location-registered terminal for the CT-2 public base station incoming method of the present invention.

Figure 3 is a flow chart for setting up an incoming call by a wired network to a location-registered terminal for the CT-2 public base station incoming method of the present invention.

Figure 4 is a block diagram of the incoming call setup by the base station internal path to the location-registered terminal for the CT-2 public base station incoming method of the present invention.

Figure 5 is a flow chart according to the incoming call setting by the base station internal path to the location-registered terminal for the present invention CT-2 public base station incoming method.

<Explanation of symbols for main parts of drawing>

10: terminal X

20: BS1

30: PSTN

40: terminal U

50: terminal Y

60: BS2

70: terminal J

In order to achieve the object as described above, a preferred embodiment of the CT-2 public base station incoming method according to the present invention, in registering the location of the terminal to the base station,

Analyzing the received data with a keypad;

Analyzing, by the base station, through the dial type analysis table already set in the database by the analysis;

Determining whether there is a PSTN line that can be allocated for an incoming call if the analysis result is the same;

Transmitting and displaying a message to the terminal to display the number and extension number of the allocated PSTN line when there is a PSTN line by the determination;

And displaying the base station and registering the base station location registration list.

In an embodiment of the present invention, the analyzing by the base station through the dial type analysis table that is already set in the database by the analysis, it is preferable to include the step of proceeding to a general call if the analysis results are not the same. ,

The step of determining whether there is a PSTN line that can be allocated for an incoming call by the analysis may include, when there is no PSTN line, sending a corresponding voice guidance to the terminal and ending the call.

Another preferred embodiment of the CT-2 public base station incoming method according to the present invention, in the incoming call setting by the wired network to a location-registered terminal,

Detecting an incoming bell when making a call;

Checking the bell to check for the presence of an available high frequency channel;

If an available RF channel exists as a result of the check, hooking off the allocated PSTN line, and then sending an announcement requesting to press an extension number;

Receiving and analyzing the extension by receiving the broadcast;

Determining whether a pollable PID is present by the analysis;

Attempting to poll for an incoming call when there is a pollable PID by the determination;

Attempting the polling, if there is a response from the subscriber, routing to the PCM data path to connect the call path is made.

In an embodiment of the present invention, the step of determining whether the pollable PID is present by the analysis includes a step of guiding and terminating the state if the pollable PID does not exist.

If the pollable PID exists according to the above determination, attempting polling for the incoming call includes voice guiding and ending the non-responsive state if there is no response from the subscriber.

Another preferred embodiment of the CT-2 public base station incoming method according to the present invention, in the incoming call setting by the internal path of the base station to the location-registered terminal,

Analyzing, by the base station, a specific dial type through a dial type analysis table;

Receiving and analyzing an extension number of a terminal that sets up an incoming call in case of an intercom (hereinafter referred to as intercom) call by the analysis;

Determining whether a pollable PID is present by the analysis;

Attempting to poll for an incoming call when there is a pollable PID by the determination;

Attempting the polling, if there is a response from the subscriber, routing to the PCM data path to connect the call path is made.

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

The configuration of the present invention comprises the steps of storing the terminal in the extension number called list in the base station, setting the incoming call by the wired network to the terminal registered denture base station, and incoming by the base station internal path to the terminal registered in the base station It consists of a call setup phase. The operation and effects thereof will be described in detail as follows.

Figure 1 is a flow chart illustrating the registration of the location of the terminal to the base station for the CT-2 public base station incoming method of the present invention. As shown here, the wireless terminal attempts to access the public network to the base station. At this time, the keypad is pressed with a specific dial type corresponding to 'location registration of the terminal for receiving an extension number' (hereinafter, 'location registration') (S1). The base station may analyze this through a dial type analysis table that is already set in the database (S2). At this time, if the result is not the same proceeds to the general call (S6). When the call for location registration of the terminal is established through the wireless channel as described above, it is first checked whether there is a PSTN 30 line that can be allocated for incoming calls (S3). Thus, if there is no PSTN 30 line, the voice guidance is sent to the terminal and the call is terminated (S7). On the other hand, if there is a PSTN 30 line, it assigns a unique extension number for the call to the terminal. The extension number, the mobile phone ID (PID) of the terminal, and other information necessary for location registration are stored in the location registration list of the base station. Then, the terminal sends a message to display the number and extension number of the allocated PSTN (30) line (S4). Then, the base station location registration list is registered (S5). If the registration is completed, the call ends with the corresponding voice guidance.

2 is a block diagram of an incoming call setup by a wired network to a location-registered terminal according to the present invention. 3 is a flowchart for setting up an incoming call by a wired network to a location-registered terminal for a method of receiving a CT-2 public base station according to the present invention. As shown, when the terminal U 40 registers the terminal 40 to externally make a call to the terminal X 10 located at the first base station (Base Station 1: BS1, hereinafter BS1) 10. The assigned PSTN 30 line number should be used. At this time, when the terminal U 40 dialed the number, BS1 detects the incoming bell (S11). Therefore, it is checked whether there is an available radio frequency (RF) channel (S12). As a result, if there is an available RF channel, after hooking off the allocated PSTN (30) line (single off), it sends a guide broadcast requesting the extension number to the terminal U (40) (S13).

Thus, when the terminal U 40 presses the extension number, the BS1 20 detects and analyzes the number from a dual frequency multiplexer (DTMF) signal (S14). Then, it is determined whether the pollable PID exists by the analysis (S15). At this time, if each is not a valid number, if the PID is not registered in the registration list corresponding to the extension number, and if the registered PID is in a call on another RF channel in BS1 (20), BS1 (20) is assigned to each The corresponding voice guidance is sent to the terminal U 40 and the call ends (S18).

On the other hand, if there is a PID in the list that does not correspond to the previous case BS1 (20) attempts to poll (polling) for the call to the terminal X (10) (S16). At this time, when there is no response to polling, or when there is a response to polling but does not answer the subscriber's call, BS1 20 sends a voice guidance corresponding to each to terminal U 40 and terminates the call. .

When the subscriber of the terminal X 10 receives a call during polling, the pulse code modulation (PCM) data path of the line 1 to which the RF channel rf1 that is being polled and the terminal U 40 attempts to make a call is performed. Routing to connect the communication path between the terminal U (40) and the terminal X (10) (S17).

FIG. 4 is a block diagram of an incoming call setup by an internal path of a base station to a location-registered terminal according to the present invention. And, Figure 5 is a flow chart according to the incoming call setting by the base station internal path to the location-registered terminal for the CT-2 public base station incoming method of the present invention. As shown in the drawing, the terminal J 70 is directly located by the general public base station within the communication area of the base station BS2 60, without passing through the PSTN 30 line to the terminal Y 50 registered in the BS2 60. To try an intercom call, press the keypad with the specific dial type that corresponds to the intercom call.

Then, BS2 60 analyzes the specific dial type through the dial type analysis table set in the database (S21). At this time, in the case of the 'intercom call' (S22) BS2 (60) waits for the terminal number 70 of the extension number keypad data of the terminal to continue to set the incoming call. If it is not the 'intercom call', the general call is performed (S27).

When terminal J 70 presses the extension number, BS2 60 analyzes the number from the keypad data (S23) and determines whether a pollable PID exists by analyzing (S24). As a result, if each is not a valid number, if no PID is registered in the registration list corresponding to the extension number, and if the registered PID is busy on another RF channel in the BS, BS2 60 corresponds to each. The voice guidance is sent to the terminal J (70) and the call ends.

On the other hand, if there is a PID in the list that does not correspond to the previous case BS2 (60) attempts to poll for the call to the terminal Y (50) (S25). At this time, if there is no response to polling, or if there is a response to polling but does not answer the subscriber's call, BS2 60 sends a voice guidance corresponding to each to terminal J 70 and terminates the call. (S28).

When the subscriber of the terminal Y 50 receives a call during polling, the PCM data paths of the RF channel rf3 that are being polled and the RF channel rf2 that the terminal J 70 attempts to call are routed, and the terminal J 70 and the terminal are routed. Connect the call path between the Y (50) (S26).

As described in detail above, the present invention can register a current location to a base station using only a dial number, and can directly receive a call from an existing PSTN through a base station without an upper control device of the base station, and is located in the same base station call area. There is an effect that a call can be made only through the base station RF channel without using lines between each other.

Claims (7)

In registering the location of the terminal with the base station, Analyzing the received data with a keypad; Analyzing, by the base station, through the dial type analysis table already set in the database by the analysis; Determining whether there is a PSTN line that can be allocated for an incoming call if the analysis result is the same; Transmitting and displaying a message to the terminal to display the number and extension number of the allocated PSTN line when there is a PSTN line by the determination; And displaying the base station and registering the base station location registration list. The method of claim 1, wherein the analyzing by the base station through the dial type analysis table which is already set in the database by the analysis comprises performing a general call if the analysis result is not the same. Base station incoming method. The method of claim 1, wherein the determining of the existence of a PSTN line that can be allocated for an incoming call by the analysis includes, when there is no PSTN line, sending a corresponding voice guidance to the terminal and ending the call. CT-2 public base station incoming method. In setting up an incoming call by a wired network to a location registered terminal, Detecting an incoming bell when making a call; Checking the bell to check for the presence of an available high frequency channel; If an available RF channel exists as a result of the check, hooking off the allocated PSTN line, and then sending an announcement requesting to press an extension number; Receiving and analyzing the extension by receiving the broadcast; Determining whether a pollable PID is present by the analysis; Attempting to poll for an incoming call when there is a pollable PID by the determination; And if the subscriber attempts to poll, responding with a subscriber, routing to a PCM data path to connect a call path. 5. The method of claim 4, wherein the determining of the presence of a pollable PID by the analysis comprises: guiding and terminating the state if a pollable PID does not exist. Way. 5. The method of claim 4, wherein if the pollable PID is present, the attempting polling for the incoming call comprises voice guiding and terminating the non-responsive state if there is no response from the subscriber. Base station incoming method. In the incoming call setting by the internal path of the base station to the location-registered terminal, Analyzing, by the base station, a specific dial type through a dial type analysis table; Receiving and analyzing an extension number of a terminal that sets up an incoming call in case of an 'intercom call' by the analysis; Determining whether a pollable PID is present by the analysis; Attempting to poll for an incoming call when there is a pollable PID by the determination; And if the subscriber attempts to poll, responding with a subscriber, routing to a PCM data path to connect a call path.