KR100223376B1 - Voicebroadcast for guiding state of called station in private exchange - Google Patents

Abstract

end. The technical field to which the invention described in the claims belongs:

The present invention relates to a called party state voice guidance method in a private exchange.

I. The technical problem the invention is trying to solve:

Conventionally, when the originating subscriber receives the ringback tone by the status of the called subscriber, no problem occurs, but the reason why the normal call is not made is provided as the tone signal.

All. Summary of the Solution of the Invention:

A voice status method of a called party in a private exchange which connects a general subscriber who has requested the call to a port of an automatic voice guide unit for outputting a guide message corresponding to a received status signal in response to dialing of a called party.

la. Important uses of the invention:

Private exchange.

Description

Voice announcement method of called party's status in private exchange {VOICEBROADCAST FOR GUIDING STATE OF CALLED STATION IN PRIVATE EXCHANGE}

The present invention relates to a method for guiding a counterpart side state in a private exchange, and more particularly, to a method for guiding a counterpart side state in voice by a counterpart state signal provided from a local exchange.

In general, when a private exchange calls a recipient through a local exchange, the status guide method of the incoming subscriber made by the local exchange is guided by a specific signal.

Specifically describing the service operation performed in the above manner, the local exchange proceeds with a protocol by register signaling when there is a call from the private exchange. In addition, the private exchange also performs register signaling when the incoming subscriber's telephone number, which is the trunk line subscriber, is dialed by the general subscriber. The register signaling refers to a type of protocol that is performed during a private exchange and a trunk line exchange when performing a call at the request of a general subscriber of the private exchange. The register signaling sequentially transmits a DTMF signal corresponding to a telephone number or a subscriber level according to a request of the local exchange, and receives a status signal indicating a called subscriber state from the local exchange. Typically, the received state signal is a mixture of low and high frequency frequencies.

In a conventional private exchange, a call is attempted to receive a state signal indicating a state of a called subscriber from a national exchange. The private exchange provides a call processing service by connecting a tone to a calling party according to the received state signal. For example, the same exchange tone was provided from a national exchange regardless of the status of various incoming subscribers such as busy, missing, broken, and phone number changed.

As described above, when the originating subscriber receives the ringback tone according to the state of the called subscriber, no problem occurs, but when the normal calling is not made, the calling subscriber did not know the exact reason why the call was not made. In other words, in the case of a general subscriber connected to a conventional private exchange, a call is not normally made, and there is an inconvenience in that the tone provided from the private exchange cannot distinguish the state of the called party.

Accordingly, an object of the present invention is to provide a method for guiding a state of a called subscriber by voice according to a state signal provided from a local exchange.

The present invention for achieving the object as described above requires the call of the incoming subscriber to the trunk line exchange by dialing the extension subscriber, and detects the status signal provided in response to the call from the local exchange to respond to the status signal. By connecting the extension subscriber to a port of an automatic voice guidance unit, a private side voice guidance method is implemented in a private exchange that provides a voice message informing the status of the called subscriber.

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

Figure 2a is a view showing a ram structure according to an embodiment of the present invention.

Figure 2b is a view showing the configuration of the voice guidance message corresponding to each port of the automatic voice guide unit according to an embodiment of the present invention.

3 is a diagram illustrating a control flow for voice guiding a called party state according to an exemplary embodiment of the present invention.

FIG. 4 illustrates signal processing performed in FIG. 3. FIG.

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

The configuration of the private exchange according to the embodiment of the present invention is as shown in FIG. Referring to FIG. 1, a configuration of a private exchange according to an embodiment of the present invention will be described. The controller 110 controls the overall operation of the private exchange according to a control program set in the ROM 130. In particular, in order to implement the present invention, the control unit 110 performs a control for providing a voice guidance message according to the state signal provided from the local exchange in response to the state of the called subscriber. The ROM 130 stores an initial program and an operation program of the controller 110 and uses an EEPROM to protect data for a predetermined time even when the power is cut off. RAM 128 stores the AVA port with the extension number according to the exchange function and the structure of Figure 2a. In addition, it stores data generated by the performance of the functions provided by the private exchange. The time switch 112 is switched under the control of the control unit 110. In particular, the switching operation for connecting the corresponding AVA port to the extension subscriber who has requested the call under the control of the control unit 110 for the implementation of the present invention. Do this. The trunk line circuit 114 connects a plurality of trunk lines (C.O) drawn from a local exchange (not shown) under the control of the controller 110 to the time switch 112. The internal circuit 116 connects a plurality of internal terminals to the time switch 112 under the control of the controller 110. The automatic voice guide unit 118 reproduces the voice guide message under the control of the controller 110 and outputs the voice guide message to the time switch 112. The automatic voice guide unit 118 reproduces and outputs a number guide message, a failure guide message, a phone number change guide message, and the like for each AVA port. The DTMF generation unit 120 generates a DTMF signal under the control of the control unit 110, and the generated DTMF signal is provided to the trunk line circuit 114 through the time switch 112. Typically, the DTMF generation unit 120 is provided inside the trunk line circuit 114. The DTMF receiver 122 converts the DTMF signal received through the internal circuit 122 into predetermined data and provides the DTMF signal to the controller 110 through the time switch 112. Typically, the DTMF receiver 122 is provided inside the internal circuit 116. The state signal detection unit 124 detects a state signal received through the trunk line circuit 114 from a local exchange (not shown) and provides the state signal to the controller 110. The state signal detector 124 may also be integrated with the trunk line circuit 114. At this time, the status signal is a signal for notifying the status of the called party called through the local exchange, the status may be, for example, during a call, missing number, telephone number change. The tone generator 126 generates various tone signals under the control of the controller 110, and the generated tone signals are provided to the internal circuit 116 through the time switch 112.

2A shows the structure of the RAM 128, and the AVA port number of the automatic voice guide unit 118 is stored according to the address. Figure 2b is a structure of the automatic voice guide unit 118, different guide messages are stored corresponding to the AVA port number.

The process for guiding the subscriber's state to voice according to an embodiment of the present invention is as shown in FIG. 3.

Referring to FIG. 3, when there is a call request from a general subscriber, a protocol according to the R2 MFC method, which is a register signaling method, and a voice guidance message corresponding to a status signal received by the protocol process are reproduced. It is a service process.

4 illustrates a protocol progression according to the R2 MFC method, which is a register signaling method performed in FIG. 3.

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

If the controller 110 detects the trunk line call request (typically, input of 9 keys) through the extension circuit 116, the controller 110 occupies the trunk line in a call enabled state and then proceeds to step 310. In step 310, the control unit 110 performs a protocol according to the R2 MFC scheme with the local exchange through the trunk line circuit 114.

For example, if subscriber A of 460-2873 wants to call incoming subscriber B of 52-1234 through trunk line, A hooks off the telephone and presses 9 to occupy trunk, then 5,2,1,2,3 , 4 is dialed sequentially. The private exchange occupies the trunk line by the received 9, analyzes 5, 2, 1, 2, 3, and 4, and then proceeds with the R2 MFC protocol with the local exchange.

A protocol execution process according to the R2 MFC method will be described in detail with reference to FIG. 4. The controller 110 of the private exchange exchanges the DTMF signal Digit d0 corresponding to the first number of the telephone number through the DTMF generator 120 provided therein in step 410. When the next number transmission request A1 is received through the trunk line circuit 114 in step 412, the process proceeds to step 414 and outputs a DTMF signal Digit d1 corresponding to the second number. After outputting the DTMF signal (Digit dn) corresponding to the last phone number in step 416 through the above-described process, the controller 110 determines whether the subscriber class request (A3) is received through the trunk line circuit (114). Detect. In step 418, if a subscriber grade request A3 is received, the process proceeds to step 420 to transmit the subscriber grade. The subscriber class means a class set in the calling party's extension exchange.

On the other hand, if the status signal indicating the incoming subscriber state (Bx) in step 422 is received via the trunk line circuit 114, the control unit 110 proceeds to the next step of Figure 3 to determine the status of the called subscriber according to the received status signal Analyze The recipient state analysis of FIG. 3 is performed by steps 312, 316, 318, and 320.

If it is determined in step 312 that the received status signal is a signal indicating that the call is busy, the controller 110 proceeds to step 314. The controller 110 generates a busy tone by controlling the tone generator 126 in step 314, and the generated busy tone is provided to the internal circuit 116 through the time switch 112.

If it is determined in step 316 that the received status signal is a signal indicating the missing number, the controller 110 proceeds to step 322. In step 322, the controller 110 controls the time switch 112 to connect the extension circuit 116 to the corresponding AVA port of the automatic voice guide unit 118. The operation of connecting the extension circuit 116 to the corresponding AVA port of the automatic voice guide unit 118 is performed by the controller 110 in the corresponding area of the RAM 128 having the structure of FIG. Read by controlling the time switch 112. When the extension circuit 116 and the automatic voice guide unit 118 are connected by the above-described operation, the number guide service is performed by a voice message.

If it is determined in step 318 that the received status signal is a signal indicating a failure, the controller 110 proceeds to step 326. When the controller 110 proceeds to step 326, the controller 110 controls the time switch 112 to connect the extension circuit 116 to the corresponding AVA port of the automatic voice guide unit 118. The operation of connecting the extension circuit 116 to the corresponding AVA port of the automatic voice guide unit 118 is performed by the controller 110 in the corresponding area of the RAM 128 having the structure of FIG. Read by controlling the time switch 112. When the extension circuit 116 and the automatic voice guide unit 118 are connected by the above-described operation, a failure guide service is performed by a voice message.

If it is determined in step 320 that the received status signal is a signal indicating that the telephone number has been changed, the controller 110 proceeds to step 326. When the controller 110 proceeds to step 326, the phone number change guide service using the voice message is performed through the same operation as the steps 322 and 324 described above.

The automatic voice guide unit 118 reproduces and outputs a different guide message for each AVA port as shown in FIG. 2B. For example, a port number notification message is output through the port b0, and a fault information message is output through the port b1, and a phone number change guidance message is output through the port b2. In step 322, step 324 and step 326, the time switch 112 is controlled to connect the extension circuit 116 to the corresponding AVA port, and an output message is automatically provided to the general subscriber through the extension circuit 116.

As described above, the present invention has an effect that the extension subscriber who has requested a call can easily and clearly grasp the state of the called subscriber by serving the state of the called subscriber as a pre-recorded voice.

Claims (2)

Claims [1] A method for guiding a state of a called subscriber by voice in a private exchange having an automatic voice guide unit having a plurality of ports for outputting a voice message corresponding to a called party's status, A first step of requesting a call of a called subscriber to a trunk line switch by dialing an extension subscriber; A second step of detecting a status signal provided in response to the call from the local exchange; Determining whether the voice signal is a state signal capable of providing voice guidance when the state signal is detected; A fourth process of providing a tone corresponding to the status signal to the extension subscriber if it is determined that voice guidance is impossible in the third process; If it is determined that the voice guidance is possible in the fourth process, a fifth process of providing a voice message informing the status of the called subscriber is connected by connecting a port corresponding to the state signal among the plurality of ports to the extension subscriber. Voice guidance method of the called party status in a private exchange. The method of claim 1, wherein the voice signal capable of guiding voice, Voice status method of the called party in a private exchange, characterized in that consisting of a status signal for notifying, a status signal for notifying the failure, and a status signal for changing the telephone number.