KR20070010907A - Apparatus and method for controlling of sending caller id - Google Patents

Abstract

A caller ID transmission controlling apparatus and a method thereof are provided to transmit a caller ID by using one caller ID transmitter and one switch without allocating caller ID transmitters to each extension subscriber, even when the caller ID is transmitted to the plural extension subscribers, thus resources of a PBX(Private Branch Exchange) are saved. A caller ID transmitter(225) converts a caller ID received from an external network into a digital signal. A switch(226) provides the digital signal received from the transmitter(225) to at least one of receiving SLTs(Subscriber Line Terminals)(230-1~230-5). A memory unit(224) stores SLT information for providing the caller ID. A controller(223) compares the SLT information with the caller information, and enables the switch(226) to provide the digital signal to a particular one of the SLTs(230-1~230-5) according to the compared results.

Description

Apparatus and Method for controlling of sending Caller ID}

1 is a diagram illustrating a method in which a private exchange transmits caller information to a plurality of called subscriber stations when using a general private exchange.

2 illustrates a private exchange in accordance with an embodiment of the present invention.

3 is a diagram illustrating an example of caller management information stored in a memory unit;

4 is a diagram illustrating a method for controlling caller information transmission in accordance with the present invention.

<Description of the symbols for the main parts of the drawings>

220: private exchange 225: caller information transmitter

221: analog trunk 226: switch

222: CID Decoder

223: central processing unit

224: memory

The present invention relates to an apparatus and a method for controlling sender information transmission.

In general, a private branch exchange (PBX) refers to a small exchange that switches communication terminals according to a plurality of trunk lines and a plurality of extension subscribers in the same building or the same company. Such private exchanges include a Key Telephone System, a Private Manual Branch Exchange (PMBX), and a Private Automatic Branch Exchange (PABX). In such a private exchange, the subscriber's telephone number is notified to the subscriber by using the caller identification code so that the subscriber can identify the caller.

Caller Identification (CID) refers to a service in which a caller's telephone number or name is displayed on the LCD screen of a receiver's phone when a call is received. The trunk line telephone station transmits caller information including the name and telephone number of the caller between ring signal pulses and ring signal pulses generated according to a call connection attempt of the caller terminal by DTMF (Dual Tone Multiple Frequency Signaling) or FSK (Frequency Shift Keying). Modulate it and insert it. The general receiver terminal or the private exchange side of the receiver receives the ring signal, separates the caller information from the ring signal, decodes the caller information, and displays information such as the caller's name and telephone number on a display unit such as an LCD screen.

FIG. 1 is a diagram illustrating a general private exchange transmitting caller information to a plurality of subscriber line terminals (SLTs).

As shown in FIG. 1, a typical private exchange 120 may include an analog trunk 121, a CID decoder 122, a central processing unit 123, a memory unit 124, a caller information transmitter 125 and a called subscriber station ( 130).

The analog trunk 121 is connected to an external network such as a telephone station 110 of a public switched telephone network (PSTN) to interface data such as a ring signal and a voice signal.

The CID decoder 122 receives a ring signal transmitted from the telephone station 110, extracts caller information included in the ring signal transmitted from the telephone station 110, and transmits the sender information to the central processing unit 123.

The central processing unit 123 stores the caller information extracted by the CID decoder 122 from the ring signal in the memory unit 124. The central processing unit 123 transmits the ring signal to the terminating subscriber station 130 connected to the private exchange 120, and controls the sender information transmitter 125 to transmit the PCM signal to the terminating subscriber station 130.

The memory unit 124 stores data such as caller information extracted by the CID decoder 122 and transmitted to the central processing unit 123.

The sender information transmitter 125 extracts the caller information stored in the memory unit 124 under the control of the central processing unit 123, modulates the caller information into a pulse code modulation (PCM) signal, and transmits the received caller information to the called subscriber station 130.

In the case of using the general private exchange 120 having the above components, it may be necessary to transmit caller information included in one call received from outside to several extension subscribers. It looks at how the private exchange 120 transmits caller information to multiple extension subscribers.

Caller information included in the ring signal from the telephone station 110 and transmitted to the analog trunk 121 is extracted by the CID decoder 122. The central processing unit 123 stores the caller information extracted by the CID decoder 122 in the memory unit 124. In addition, the central processing unit 123 controls the sender information transmitter 125 having the same number as the number of called subscriber stations 130 connected to the private exchange to transmit caller information. That is, each caller information transmitter 125 extracts the caller information stored in the memory unit 124, modulates the caller information into a PCM signal, and transmits the caller information to each called subscriber station 130. Each called subscriber terminal 130 receives the PCM signal and extracts the caller information included in the PCM signal and displays it to the user.

As described above, in the case of using the general private exchange shown in FIG. 1, the same number of sender information transmitters as the number of internal subscribers is required to show caller information to all internal subscribers for one ring signal. In the case of using such a general private exchange, since multiple caller information transmitters are used for one call, there is a problem in that there is a shortage of caller information transmitter resources to service another call to be received next.

Accordingly, the present invention is to solve the problems according to the prior art described above, to switch the PCM signal output from one sender information transmitter in order to transmit the caller information included in the ring signal to multiple extension subscribers The present invention relates to a caller information transmission control device and a method for controlling transmission to a destination subscriber station.

The apparatus for controlling caller information transmission according to the present invention includes a caller information transmitter for converting caller information received from an external network into a digital signal and a switch for providing a digital signal received from the caller information transmitter to at least one called subscriber terminal. .

The switching system according to the present invention includes a caller information transmitter for extracting caller information received from an external network and converting the caller information into a PCM signal, and a switch for providing the PCM signal received from the caller information transmitter to at least one called subscriber terminal.

In this case, the caller information transmission control apparatus or the switching system may further include a memory unit for storing the called subscriber terminal information for providing caller information, and compares the called subscriber information and the caller information received from the external network. According to a result, the switch may further include a controller for providing a digital signal to a specific called subscriber terminal.

The method for controlling caller information transmission according to the present invention may include extracting caller information received from an external network, converting the caller information into a digital signal, and switching the converted digital signal to at least one called subscriber station.

In addition, the sender information transmission control method according to the present invention may further comprise the step of storing the called subscriber terminal information to provide the caller information, comparing the caller information received from the external network and the stored called subscriber terminal information The method may further include transmitting a digital signal to a specific called subscriber terminal according to the result.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the configuration and operation of the caller information transmission control apparatus according to the present invention will be described in detail.

2 is a block diagram illustrating a private exchange according to an embodiment of the present invention.

As shown in FIG. 2, the private exchange 220 includes an analog trunk 221, a CID decoder 222, a central processing unit 223, a memory unit 224, a caller information transmitter 225, a switch 226, and an incoming call. The subscriber station 230 may be configured as a subscriber line terminal (SLT).

The configuration and function of the analog trunk 221, the CID decoder 222, and the terminating subscriber station 230 have already been described with reference to FIG. 1.

The central processing unit 223 controls the sender information transmitter 225 to extract the sender information from the memory unit 224 and to modulate it into a PCM signal when transmitting the sender information to one or more destination subscriber stations 230. The central processing unit 223 controls the PCM signal output from the caller information transmitter 225 to be transmitted to several destination subscriber stations 230 through the switch 226.

Further, the central processing unit 223 may compare the caller information extracted by the CID decoder 222 with the caller management information stored in the memory unit 224 to designate a specific called subscriber terminal 230 to transmit the caller information. . The central processing unit 223 controls the switch 226 to transmit caller information only to a specific called subscriber terminal 230 designated to be called.

The memory unit 224 stores caller information extracted by the CID decoder 222 like a general private exchange. In addition, the memory unit 224 may store caller management information including information of the called subscriber terminal 230 that will receive the ring signal and the caller information when a ring signal is received from any external terminal.

3 is a diagram illustrating an example of caller management information stored in the memory unit 224. The caller management information shown in FIG. 3 includes the caller's telephone number and the information of the called terminal. Of course, the caller management information may further include information such as the caller's name, address. In the example of FIG. 3, when a ring signal is received from the external terminal having the telephone number of 123-1111 to the private exchange according to the present invention, the private exchange is SLT 1 (230-1), SLT 2 (230-2), SLT. It is to transmit the ring signal and the caller information only to the terminal 3 (230-3).

The caller information transmitter 225 extracts the caller information stored in the memory unit 224 and modulates the caller information into a PCM signal so that the caller information can be transmitted to the called subscriber terminal 230 through a single line interface (SLI). The PCM signal modulated in this manner is transmitted to the switch 226.

The switch 226 switches the PCM signal received from the caller information transmitter 225 to one or more called subscriber stations connected to the private exchange. If the central processing unit 223 designates a specific terminating subscriber terminal 230, the switch 226 switches the PCM signal only to a specific terminating subscriber terminal designated to be controlled under the control of the central processing unit 223.

Referring to Figure 3 when the ring signal is input from the external terminal having a telephone number of "123-1111" Let us look at the operation of the private exchange 220.

The CID decoder 222 of the private exchange 220 receives the ring signal from the telephone station 210, decodes the caller information 123-1111 included in the ring signal, and transmits it to the central processing unit 223.

The central processing unit 223 stores the received sender information in the memory unit 224, and the central processing unit 223 retrieves the caller management information to receive the sender information SLT 1 (230-1), SLT 2 (230-). 2) and SLT 3 (230-3) are designated.

One sender information transmitter 225 extracts the caller information 123-1111 stored in the memory unit 224, generates a PCM signal corresponding to the caller information, and transmits the same to the switch 226.

The switch 226 receives the PCM signal from the caller information transmitter 225 and transmits the PCM signal to the SLT 1 230-1, the SLT 2 230-2, and the SLT 3 (according to the control of the central processing unit 223). 230-3) to switch the PCM signal.

SLT 1 230-1, SLT 2 230-2, and SLT 3 230-3 receiving the PCM signal from the switch 226 extract and display caller information from the PCM signal and wait for a response from the user.

The private exchange according to the present embodiment may extract sender information from one ring signal by using one sender information transmitter and transmit the same to multiple destination subscriber stations. However, when two or more ring signals are transmitted to the private exchange, the private exchange of FIG. 3 has one sender information transmitter and thus cannot process multiple ring signals. In this case, the private exchange can handle multiple ring signals by having multiple sender information transmitters.

4 is a flowchart illustrating a method for controlling caller information transmission according to the present invention.

The apparatus for controlling caller information transmission according to the present invention may store caller management information including information of a called subscriber terminal to receive a ring signal and caller information when a ring signal is received from an external network as shown in FIG. 3.

The caller information transmission control apparatus receives a ring signal from an external network and extracts and stores caller information included in the ring signal (S410).

The caller information transmission control apparatus retrieves the extracted caller information from the caller management information and determines a called subscriber station to receive the ring signal and the caller information (S420).

The caller information transmitter converts the caller information stored in step S410 into a PCM signal and transmits the same to the switch (S430).

The switch receiving the PCM signal output from the caller information transmitter switches the PCM signal to at least one called subscriber terminal designated at step S440.

Each called subscriber station receiving the switched PCM signal displays the caller information to the user (S450).

Using the above-described method has the advantage of using only one sender information transmitter even when multiple called subscriber stations receive caller information included in one ring signal. In addition, when the ring signal is to be transmitted only to a specific extension subscriber, caller information may be transmitted only to a specific extension subscriber by comparing caller information extracted from the ring signal with caller management information.

As described above, according to the caller information transmission control apparatus and method according to the present invention, even when a caller information is to be transmitted to a plurality of extension subscribers connected to a private exchange, one caller is not assigned to each extension subscriber. By transmitting the caller information using the information transmitter and the switch, it is possible to save the resources of the private exchange.

Claims (10)

In the caller information transmission control device, A caller information transmitter for converting caller information received from an external network into a digital signal; Wow And a switch for providing a digital signal received from the caller information transmitter to at least one called subscriber terminal. The method of claim 1, Sender information transmission control device further comprising a memory unit for storing the destination subscriber station information to provide the caller information. The method of claim 2, And a control unit for comparing the called subscriber terminal information of the memory unit with caller information received from an external network and causing the switch to provide a digital signal to a specific called subscriber terminal according to the result. In the caller information transmission control device, A caller information transmitter for converting caller information received from an external network into a digital signal; A switch for providing a digital signal received from the sender information transmitter to at least one called subscriber terminal; A memory unit for storing called subscriber terminal information for providing caller information; And And a control unit for comparing the called subscriber terminal information of the memory unit with caller information received from an external network and causing the switch to provide a digital signal to a specific called subscriber terminal according to the result. In the exchange system, A caller information transmitter for extracting caller information received from an external network and converting the caller information into a PCM signal; Wow And a switch for providing a PCM signal received from the sender information transmitter to at least one destination subscriber station. The method of claim 5, And a memory unit for storing called subscriber terminal information for providing caller information. The method of claim 6, And a control unit for comparing the called subscriber terminal information of the memory unit with caller information received from an external network and causing the switch to provide a PCM signal to a specific called subscriber terminal according to the result. In the caller information transmission control method, Extracting caller information received from an external network and converting the caller information into a digital signal; Wow And switching the converted digital signal to at least one called subscriber station. The method of claim 8, And storing the called subscriber terminal information for providing the caller information. The method of claim 9, And comparing the stored caller information received from an external network with the stored called subscriber station information and transmitting a digital signal to a specific called subscriber terminal according to the result.

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