KR0161129B1 - Method for receiving desired call only using secret number in the full electronic switching system - Google Patents

Abstract

The method for receiving an optional call is to allow an incoming subscriber to select and accept only an incoming call required by an outgoing subscriber who knows the password when registered with the password. Checking whether an optional call reception service using a password is registered when an incoming request signal is received from a subscriber; If the selective call receiving service using the password is registered, transmitting a guide broadcast to enter the password to the calling party; Connecting a DTMF receiver for receiving a password from the calling party; Checking whether the password matches the registered password by inputting the password to the connected DTMF receiver; If the password is different, informing the calling party that the called party is impossible and releasing the call; If the password matches, the ring is sent to the called party and the calling party sends the ring that the called party is busy.

Description

Password Acceptance Method using Password in Electronic Switching System

1 is a block diagram in an electronic switch in which the selection call receiving method according to the present invention is applied.

2 is a call control flowchart of a called party for performing a method of receiving a selective call according to the present invention.

3 is a call control flowchart of a calling party for performing a selective call receiving method according to the present invention.

* Explanation of symbols for the main parts of the drawings

100: call signal control processor 101: call signal control processor

120: number translation processor

The present invention relates to a method of receiving a selection call in an electronic switchgear, and more particularly, to a method of receiving a selection call for accepting a selection call using a password in a domestic telephone exchange.

Conventionally, when an outgoing subscriber calls a called subscriber, the called subscriber has no way of knowing who the outgoing subscriber is. Therefore, once the ringing signal rings on the incoming subscriber's phone, the called party should answer the caller. This causes the user to receive an incorrect call number or an unwanted call by a dial or prank call. In particular, the damage of subscribers due to mischief phone calls is now extended to social problems. In order to prevent such kinds of misinterested calls, such as prank calls, incoming call subscribers have taken measures such as using an answering machine or unplugging a telephone cord. However, when the telephone cord was unplugged, there was a problem in that even a call that must be received cannot be received.

Therefore, in order to solve the above-mentioned problems, the present invention selects an incoming call using a password so that the incoming subscriber can select and accept only incoming calls required by the calling subscriber who knows the password. To provide a method of acceptance.

Selective call receiving method according to the present invention comprises the steps of checking whether the incoming call selection service using a password is registered when the incoming call request signal to any incoming subscriber; If the selective call receiving service using the password is registered, transmitting a guide broadcast to enter the password to the calling party; Connecting a DTMF receiver for receiving a password from the calling party; Checking whether the password matches the registered password by inputting the password to the connected DTMF receiver; If the password is different, informing the calling party that the called party is impossible and releasing the call; If the password is matched, the ringing is sent to the called party and the calling party is characterized in that it comprises the step of sending that the called party is busy.

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

1 is a block diagram in an electronic switch for performing the method according to the present invention, the call signal control processor 100 for controlling the calling party's call, and the number translation for translating the called party's number sent from the calling party. The processor 120 is configured as an incoming call control processor 110 that controls an incoming call when a call request is received by the incoming subscriber.

2 is a call control flowchart of a called party in performing a selective call reception method according to the present invention.

3 is a call control flowchart of a calling party in performing a selective call reception method according to the present invention.

Next, the operation of the present embodiment will be described with reference to FIGS. 1, 2, and 3.

First, call processing to the called party is performed as follows.

When an incoming call is generated from an arbitrary subscriber in step 201 and the incoming call control processor 110 of an incoming subscriber receives an incoming request signal, the process proceeds to step 202 where the called party receives a selective call acceptance service using a password. Check if it is registered at.

As a result of the test, if the called party is not registered in the selective call reception service, the process proceeds to step 203 to connect the ring and ringback tones according to the general calling party's incoming call procedure, and proceeds to step 205 to maintain the incoming call waiting state. do.

However, as a result of the check in step 202, if the incoming subscriber is registered in the selective call accepting service by password, the process proceeds to step 206 and connects the announcement to the calling subscriber to enter a password, and proceeds to step 206, the incoming call The control processor 110 connects a DTMFR (DTMF Receive) to receive a password inputted from the calling subscriber as a DTMF (Dual Tone Multi Frequency, DTMF) digit.

After the DTMFR is connected, the process proceeds to step 207 to send a message requesting the password input to the call signal control processor 100 and proceeds to step 208 to maintain the password reception standby state.

When the password is received from the call signal control processor 100 during the password reception waiting, the process proceeds from step 209 to step 210 to compare the received password with a preset password. As a result of the comparison, if the password is the same, the process proceeds from the step 211 to the step 203 to proceed with the ring and ringback tone connection state to make a normal call, and the call is received and the process proceeds to the step 204 to maintain the call answering standby state as described above. .

However, as a result of the comparison in step 211, if the password is different, the process proceeds to step 212, the call signal control processor 100 notifies the call failure according to the incorrect password, and proceeds to step 213 to stop the operation.

On the other hand, the call processing process for the calling party is performed as follows.

That is, when the subscriber side receives the password transmission request signal from the incoming call control processor 110 in the incoming call waiting state of step 301, the subscriber side proceeds from step 302 to step 303 to determine the standby state for the password to be input from the calling party. Keep it.

When the digit is received from the subscriber in the password input standby state, the call signal control processor 100 proceeds from step 304 to step 305 to send the password to the call signal control processor 110 and then proceeds to step 306. The called party's response wait state is maintained.

If the password sent from the called party's answer waiting state of step 306 matches, the process proceeds to step 307 and the ringback tone is sent, and the process proceeds to step 308, where the called party answers (where the answer is the state of the recipient's telephone receiver). If you go to step 309 to maintain a busy state.

However, if the password sent in the called party response waiting state of step 306 is different, the process proceeds to step 310 and a message indicating that there is an error in the password call is received from the incoming call control processor 110. Accordingly, the call signal control processor 100 proceeds to step 311 to send an audible sound indicating that the call has failed to the calling party, and proceeds to step 312 to stop the operation.

If the incoming subscriber responds after the ringback tone is received without requesting password transmission in step 313 in the incoming call waiting state of step 301 described above, the call proceeds to step 314 where the call proceeds in the same manner as the existing call flow. Will remain in a heavy state.

As described above, the present invention provides a selective call reception service using a password to the called party so that the ring of the called subscriber is sent only to a call of the calling subscriber who knows the password, so that the calling subscriber does not know the password. It is effective to prevent the formation of a call in advance.

Claims (1)

In the method of receiving call selection of an electronic switch having an outgoing call control processor (100) and an incoming call control processor (110), an outgoing call of any call subscriber is sent to the incoming call control processor (110) of any called party. When the incoming call is received from the control processor (100), checking whether the incoming call subscriber registers the selective call reception service using a password; Connecting the announcement to the subscriber to enter the password if the incoming subscriber receives the selective call reception service using the password; The incoming call control processor (110) connecting a DTMF receiver for receiving a password from the outgoing call control processor (100); Transmitting a guide broadcast and receiving a password input from the call signal control processor 100 to the DTMF receiver and checking whether the password matches the registered password; If the password is different, notifying the incoming call control processor 100 that the incoming call is not possible and releasing the call; If the password is matched, the incoming call control processor 110 transmits a ring to the called party and transmits to the outgoing call control processor 100 that the incoming subscriber is calling. How to accept an option.