KR0123474B1 - Ring signal display method for call signal incoming of private exchanger - Google Patents

Abstract

The present invention relates to a method for granting a ringing tone for a call to an internal subscription telephone when an incoming call occurs in a private exchange. Particularly, the internal subscription telephone of a call target can be easily distinguished by assigning a unique ringing tone to each internal subscription telephone. The present invention relates to a ring signal presentation method for notifying incoming call signal at a private exchange.

In a conventional private exchange, when a call is made to a subscriber, the same call signal is generated to the subscriber. Therefore, when the subscribers are concentrated, it is not easy to distinguish who is the caller. There was a problem of waiting longer than necessary and causing inconvenience to the subscribers.

The present invention does not give ring subscribers of the same cycle to all subscribers as call signals to station subscribers, but determines the cycle of ring signals according to the stored data values with reference to each subscriber's data table, and divides call signals into telephones and sends them out. Therefore, the identification of the calling phone is easy.

Description

Ring signal presentation method for notifying incoming call signal at private exchange

1 is a block diagram of a private exchange for implementing the present invention.

2 is an exemplary diagram of a data table for storing an on / off period of a ring signal for each telephone in accordance with the present invention.

3 is a flowchart illustrating an operation of sending a call warning signal in accordance with the data table shown in FIG.

* Explanation of symbols for main parts of the drawings

10: central processing unit 20: memory

30: random access memory 40: line search circuit

50: subscriber circuit 60: tone generating circuit

70: tone detection circuit 80: switching circuit

The present invention relates to a method for granting a ringing tone for a call to a subscribing telephone when an incoming call occurs in a private exchange. Particularly, the subscribing telephone can be easily distinguished by assigning a ringing tone of a unique period to each subscribing telephone. The present invention relates to a ring signal presentation method for notifying incoming call signal at a private exchange.

In general, in a private private exchange system, an internal subscriber connected to an exchange service network in a trunk line or an extension station calls an internal subscriber to a station subscriber by raising the ring of the same tone throughout the system regardless of the subscriber who is called. Called.

Therefore, in the case of the existing ring generation method, it is not easy to distinguish who is the callee when the extension subscribers are concentrated. Therefore, the waiting party must wait longer than necessary time, and it does not affect the efficiency of the subscribers. The resulting problem has occurred.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a ring signal presentation method for informing the call signal reception in the private exchange to make it possible to easily distinguish the telephone generated the call signal by changing the call signal cycle for each telephone It is.

In order to achieve the above object, a feature of the present invention provides a ring signal presentation method for notifying incoming call signal at a private exchange, comprising: a first step of storing ring signal generation periods for a plurality of subscribers; A second step of determining whether a ring signal generation period for the corresponding subscriber is stored when calling a subscriber; And a third step of transmitting to the ring signal extension subscriber corresponding to the stored ring signal generation period when it is determined that the ring signal generation period is stored in the second step.

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

1 is a block diagram of a private exchange for implementing the present invention, a memory 20 for storing a program necessary for the overall operation of the system, and a random access memory for storing and changing various data necessary for the movement of the system. 30, a central processing unit 10 for performing a suitable control operation according to the overall operating state of the system, and a plurality of extension telephones are connected to perform a data matching function between analog signals and PCM type signals, and Subscriber circuit 50 for detecting a hookswitch state of a telephone, and the state of the subscriber circuit 50 is reported to the central processing unit 10 or the subscriber receives a control command generated from the central processing unit 10. And a line search circuit 40 for controlling the circuit 50, and additionally generating a generation circuit 60 for generating a tone signal, and a tone detection for sensing a tone signal. A switching circuit 80 that performs a switching function to all of the calls in a furnace 70 and a private branch exchange.

When described in detail with reference to Figures 2 and 3 attached to the operation of generating a different call signal for each extension telephone in the private exchange according to the present invention configured as described above are as follows.

FIG. 2 is an example of a data table for storing a ring signal, that is, an on / off cycle of a call signal, for each telephone according to the present invention. As shown in FIG.

3 is a flowchart illustrating an operation of transmitting a call warning signal according to the data table shown in FIG.

First, a subscriber who wants to listen to a call alert signal separately from other extension subscribers in a manner as shown by way of example in FIG. 2 in the data table assigned to him in the random access memory 30 of the private switching system. It stores On / Off cycle of ring signal basically provided by system.

The data table formed in the random access memory 30 has a data value set and stored at the time of production of the system, and the data value can be arbitrarily changed by the user by operation and maintenance.

In the private exchange of the present invention configured as described above, when a call occurs to an extension subscriber, an operation of distinguishing and generating a call signal is performed as follows.

In the stem S101, the central processing unit 10 determines whether there is a call to any extension subscriber from the CO line or an extension subscriber, and if there is a call target, the flow proceeds to step S102 to determine whether the call is made in step S101. Access the data table.

The data table accessed in step S102 is read in step S103, and valid data, i.e., data for the on / off period of the ring signal exists in the data table of the extension telephone called in step S101. Judge

If there is no data for the on / off period of the ring signal in the data table of the extension telephone called in step S101 in step S103, the process proceeds to step S104 and the ring signal basically provided by the system. Is applied to the extension telephone called in step S101.

If the data for the on / off period of the ring signal exists in the data table of the extension telephone called in step S101 in step S103, the process proceeds to step S105 and the random access memory 30 The ring signal is output in accordance with the data of the data table formed in the data table, that is, the on / off cycle, and applied to the extension telephone called in step S101.

In step S104 or step S105, the process proceeds to step S106 in which the telephone line and the call path where the ring tone is generated are maintained, and the normal call state is terminated.

By providing a ring signal presentation method for notifying call signal reception in a private exchange according to the present invention operating as described above, the subscriber station does not give ring subscribers of the same cycle to all subscribers as a call signal, but the data table of each subscriber. By determining the period of the ring signal according to the stored data value, the call signal is distinguished and transmitted to the telephone, thereby making it easy to identify the calling telephone.

Claims (1)

CLAIMS 1. A ring signal presentation method for notifying incoming call signal at a private exchange, comprising: a first step of storing ring signal generation periods for a plurality of subscribers; A second step of determining whether a ring signal generation period for the corresponding subscriber is stored when calling a subscriber; And a third step of transmitting a ring signal corresponding to the stored ring signal generation period to the subscribers when the ring signal generation period is determined in the second step. Ring signal presentation method for notifying incoming call signal.