KR100326760B1 - Method for recording and reproducing contents of telephone call in isdn terminal - Google Patents

Abstract

The present invention relates to a method for recording and replaying a call in an ISDN terminal. The present invention relates to a user in a call state in order to solve a problem of the prior art, in which it was not possible to reproduce a call content previously used after the end of a call and not view it again. Schedule key selection process to select the schedule key pressed for information exchange between the receiver, Receive data storage process to save the call contents by receiving time by the schedule key selection process, and call content by call time by the schedule key selection process The call contents and the other party's dial number by time, even after the end of the call, by performing the call data storage process and the call content playback process to sort and play the stored call contents by the time after the call ends. You can look back.

Description

How to record and play back a call on an ISDN terminal

The present invention relates to a method for recording and reproducing call contents in an ISD diene (hereinafter referred to as 'ISDN') terminal. This is to play and view the other party's call contents by time.

In general, a system for recording and playing a call using an ISDN terminal is illustrated in FIG. 1. As shown in FIG. 1, an ISDN network interface in charge of a protocol between a first layer and a second layer and an HDLC procedure is provided. A user under the control of the microprocessor unit unit 3, which simultaneously processes the unit 1, the processing of the ISDN protocol, and the analog / digital technology assessment (TA) function. A memory unit 4 for storing and loading data between the memory unit, a backup battery 5 for supplying pickup power to the memory unit 4, and a microprocessor unit unit 3 for retrieving a key value selected by a user. And a liquid crystal display (6) for displaying the telephone number selected by the keypad (7) and the operating state of the telephone under the control of the keypad (7) and the microprocessor unit (3). .

The conventional ISDN terminal by the above configuration was able to exchange necessary signal information between users in a call state.

In other words, if you press the User to User Signal (UUS) key in a call state, or if you press an access code (for example, * 71 #) and enter the inter-user mode and press the desired digit, it is displayed on the calling terminal. The corresponding DTMF tones of the digit ring.

On the other hand, in the receiving terminal, the digit received from the other side is displayed and the receiving DTMF tone sounds.

As such, the user and the user need to alternately display the necessary information between the users during the call by using a keypad, so that the user cannot see the signal data (or the contents of the call) between users after the end of the call (when on hook). there was.

The present invention records the contents of the call in the ISDN terminal for playback after the end of the call by storing (or recording) the conversation between users exchanged using the DTMF digits of the receiving / calling terminal in the call state to solve the above problems And a reproducing method.

The present invention for achieving the above object is a schedule key selection process for selecting a constant key pressed for information exchange between users in a call state, and receiving side data storage for storing the contents of the call by the receiving time by the schedule key selection process (Or recording) process, the calling party data storing process for storing the call contents by the calling party time by the schedule key selection process, and the call contents stored in the receiving / calling party data storing process by sorting by time after call termination The contents of the call are played.

The above processes will be described in detail step by step based on FIG. 2 as follows.

In the present invention, a call is established between a user and a user in a call state, that is, one channel (for example, D-channel) is set up and another channel (for example, B-channel) is allocated to a receiving / calling party for information exchange between users in a call state. The user selects a certain key (eg, '* 71 #' on the keypad 7 or selects an inter-user signal key (UUS key)) (S1).

In the case where the predetermined key is selected by the user of the receiving side, the receiving data storage may include displaying the contents of the time-based call between the user and the calling party (S2), and storing the displayed contents of the time-based call between the users ( S3) and the step (S5) of storing the contents of the time-specific call between the user in the queue by the selection of the schedule key (signal key between users) (S4).

On the other hand, when a predetermined key is selected by the user of the calling party in the above, storing the calling party data displays the time-specific call contents between the user and the receiving party (S6), and stores the displayed time-specific call contents between the users. And a step (S9) of storing the time-specific call contents between the users in a queue by selecting (S8) a predetermined key pressed by the user.

The playback of the stored call content is performed in the display mode state search step (S10) and the display mode state search step (S10) for searching whether the time-based call content between the user of the other party (the receiving side or the calling side) is in the display mode state. If the display mode state by the step of displaying the call contents by the time between the counterpart user (S11), and selection key search step (S12) for searching whether a schedule key for viewing the desired call contents of the displayed call contents is selected; And, if a predetermined key (for example, '*') is pressed to view the next contents through the selection key search step (S12), clearing the currently displayed call contents (S13), and displaying the next call contents ( S14) and another predetermined value (for example, '#' scroll key) is pressed to play and view the desired (most recent) call content in the selection key search step Sl2. If the call is made to the display step (S15) is displayed.

Operation of the present invention according to the above is as follows.

First, in case of call between user and user, that is, call is set up in one channel (for example, D channel), and another channel (for example, B channel) is assigned and certain key (' * 71 # 'or user-to-user signal key).

This will enter the UUS mode. When the user presses the desired digit, it will be displayed on the transmitter and the DTMF tone will be heard.

At the receiver, the received dessert is displayed and the DTMF tones of the received digit are heard.

The terminal that has transmitted the call data between the users and the received terminal retrieves the real time clock data, respectively, and stores the call data between the users displayed on the liquid crystal display 6 in a queue. Inter-user call data is DTMF digit data, which is generated when a button on the telephone is pressed and sent to a telephone company. In many countries, including the United States, the phone that replaced the dial phone is called a touchtone phone or an electronic phone. In a telephone with DTMF, each key of the telephone you press produces two notes with a specific frequency. Thus, one voice is a note belonging to a high frequency and the other is a note belonging to a low frequency so that the voice cannot mimic the note.

In this case, the originating terminal that attempted the first call stores the information of the receiving party number in the 'Setup' message first sent to the ISDN network to set up the call in the Enblock sending mode. In the overlapping mode, the keypad function information is stored in an 'Info' message.

In other words, when setting up a call before sending call data between users, the calling terminal stores the dial number of the receiving terminal, and when the user presses the '* 71 #' or 'UUS' key to transmit the call data between users, It is saved with time, dial number of receiving party, and call data between users.

The receiving terminal stores information of the calling party number when there is calling party address information in the 'Setup' message from the ISDN network side to the receiving terminal, and the user selects '* 71 #' or 'signal key between users'. If so, the calling party stores the calling party address along with the time, calling party dial number, and call data between users in the memory unit (shown in FIG. 1).

As described above, the user-to-user call data at the receiving / calling terminal after the end of the call is used by the user for the latest call-to-user call data and the counterpart (receiving side or calling party) dial number and time through the liquid crystal display unit 6. For example, the liquid crystal display 6 is displayed in the following form.

TIME: 1994.06.14

DIAL: 1234567 * 71 # 0805

That is, as shown in FIG. 2, when the "*" key is pressed, the currently displayed time, the status dial number, and the call data between users are cleared, and the next data is displayed.

In addition, the "#" key is used as a scroll key to display the most recent inter-user call data and the counterpart dial number.

As described above, the present invention can use the ISDN terminal to view the call data between the user and the user who communicated with each other in a call state at any time through the liquid crystal display unit at any time even after the call ends.

In particular, in case of ISDN telephone, call data between users can be limited to digit data, but when calling data, data such as letters and numbers can be exchanged with each other. It can be very effective.

1 is a system configuration diagram for recording and playing call contents in a general ISDN terminal.

2 is a flowchart of call recording and playback in an ISDN terminal of the present invention.

*** Explanation of symbols for main parts of drawing ***

1: ISDN network interface part

2: High Level Data Link Control (HDLC)

3: microprocessor unit (MPU) section 4: memory section

5: backup battery 6: liquid crystal display

7: keypad

Claims (4)

A schedule key selection process for selecting a schedule key pressed for information exchange between users in a call state; Storing a receiving side input DTMF digit and / or text data in a memory using the schedule key selection process; and a calling party input DTMF storing a call contents by calling side time using the schedule key selection process. Storing digits and / or character data in memory; Call contents recording and reproducing method of the ISDN terminal, characterized in that consisting of the call contents playback process to view the contents of the call stored in the receiving / calling data storage process by sorting by time after the end of the call. The method of claim 1, The receiving data storing process includes the steps of displaying the contents of the call by time between the user and the calling party (S2); Storing the displayed contents of the time-specific call between users (S3); And (S5) storing the time-specific call contents between the users in a queue by selecting a schedule key (S4). The method of claim 1, The storing process of the calling party data may include displaying the contents of the time-specific call between the user and the receiving party (S6); Storing the displayed contents of the time-based call between users (S7); And storing (S9) the time-specific call contents between the users in a queue (S9) by selecting a predetermined key pressed by the user (S8). The method of claim 1, The call content reproduction process may include: a display mode state search step (S10) of searching whether a time-based call content between a counterpart (receiving party or calling party) user is in a display mode state; Step (S11) for displaying the contents of the call by the time between the counterpart user in the display mode state by the display mode state search step (S10); A selection key search step (S12) for searching whether a schedule key for viewing a desired call contents among the displayed call contents is selected; If the predetermined key is pressed to view the next contents through the selection key search step S12, clearing the currently displayed call content (S13), displaying the next call content (S14), and the selection key search step. Call recording and playback method in the ISDN terminal, characterized in that the display step (S15) to display the call contents when another schedule key is pressed to play and view the desired call contents in (S12).