KR100190458B1 - Respond message transmitting apparatus in digital telephone - Google Patents

Abstract

The present invention relates to an apparatus for transmitting a response message of a digital telephone. The present invention relates to a data codec for converting an asynchronous data signal input into a digital telephone from a PABX system body into a PCM signal, and receiving a PCM signal converted and outputted by the data codec. An interface providing a connection with a data communication service performing device, a central processing unit for controlling a response procedure of a called digital telephone and transmitting a response message according to an originating call signal input through a PABX system main body, and a central processing unit It consists of a 2x1 multiplexer which selects the data signal of the interface or the response message of the central processing unit according to the control signal of the controller and outputs it to the calling digital phone. The calling digital phone is called to connect the entity of the data communication service. If you do not receive a normal data service By receiving a response message indicating the entity connected to the new party, it is possible to easily recognize what the entity is connected to the called party, thereby allowing the data communication service user to easily connect with the service entity and make the data very convenient. It can be provided with a communication service.

Description

Response message transmitter of digital telephone

1 is a block diagram of a PABX system to which the present invention is applied;

2 is a block diagram of an apparatus for transmitting a response message of a digital telephone according to the present invention.

3 is a flowchart of a data call between digital telephones according to the present invention.

* Explanation of symbols for main parts of the drawings

10: data codec 20: interface

30: central processing unit 40: multiplexer

The present invention provides a data communication service for a user of a calling digital phone when a data communication service is performed using a digital phone in a Private Automatic Branch eXchange (hereinafter, abbreviated as 'PABX') system. By receiving a response message from the called party's digital phone before receiving it, the answering message of the digital phone can be easily distinguished by the user of the calling party's digital phone, and thus can easily use data communication services. It relates to a transmission device.

In general, in the PABX system, when a caller wants to receive a data communication service from a caller's digital phone through a caller's digital phone, the caller's digital phone is conventionally provided by an entity, such as a host computer, that provides caller's data communication service. The communication service was performed by directly connecting to a device that provides services such as fax and printer.

However, in the direct connection between the digital telephone and the data communication service performing device as described above, the calling party does not know which data communication service performing device is connected to the called party, so if the user connects with an unwanted device, There was an uneconomical and inconvenient problem of canceling the connection and continuing to attempt to access the communication service until the desired service performing device is connected.

The present invention has been made to solve the above problems, and its purpose is to inform the user of the calling digital phone what is the entity connected to the called party from the called digital phone before receiving the actual data communication service. By receiving the response message, the calling user can accurately recognize the substance of the data communication service connected to the called party. Accordingly, the user can conveniently use the data communication service to improve the use efficiency of the communication service. To provide a response message transmission device of a digital telephone that can be made.

The present invention for achieving the above object is that when the call signal from the calling digital phone to the called digital phone to notify the incoming state of the called digital phone by the signal processing between the PABX system body and the called digital phone incoming A call processing procedure is performed, and the central processing unit of the called digital telephone transmits a response message indicating to the calling digital telephone what the substance of the data communication service connected to the called party is by controlling the multiplexer. do.

Hereinafter, with reference to the accompanying drawings will be described in detail the response message transmission device of the digital telephone of the present invention.

FIG. 1 is a block diagram of a PABX system to which the present invention is applied. As shown in FIG. 1, a CPU 2 and a digital telephone that perform all call processing and control functions in a PABX system are managed. The PC 6 is connected to the PABX system main body 1, which is composed of a digital phone controller (DPC) 3A for processing a control signal and a DPC 5B used as a data dedicated port. A calling party digital phone 4 connected to the DPC 3A of the PABX system main body 1 to perform voice and data communication, and a called party digital phone connected to the DPC 3B to perform voice and data communication, respectively. 5A, 5B, 5C, and a host computer 7A, a printer 7B, and a modem 7C, which are connected to the digital telephones 5A, 5B, 5C, respectively, and perform a corresponding data communication service.

2 is a block diagram of an apparatus for transmitting a response message of a digital telephone according to the present invention. As shown therein, a data codec 10 for converting an asynchronous data signal input into a digital telephone from a PABX system main body into a PCM signal is provided. And an interface 20 for receiving a PCM signal converted and output by the data codec 10 and providing a connection with a data communication service performing apparatus such as a host computer or a fax machine, and a calling party input through a PABX system body. The central processing unit 30 controls the response procedure of the called-side digital telephone and transmits the response message according to the call signal, and the data signal of the interface 20 or the center according to the control signal of the central processing unit 30. A 2 × 1 multiplex that selects a response message from the processing device 30 and outputs it to the calling digital phone through the data codec 10. It is composed of 40.

The operation of the response message transmission device of the digital telephone configured as described above will be described with reference to the data call flow chart between the incoming and outgoing digital telephones of FIG.

When the user wants to connect with the host computer, for example, of the called party data communication service using the digital phone, the user first calls 31 the called party digital phone via the digital phone.

Accordingly, the CPU 2 in the PABX system main body 1 inputs an outgoing signal 32 from the calling digital phone, and an outgoing signal display 33 is sent to the calling digital phone, and an incoming call 34 is received at the called digital phone. ) Respectively.

Subsequently, the called party's digital telephone, to which the incoming call 34 is input, applies a response 35 corresponding to the incoming call 34 to the CPU 2, and the CPU 2 sends a call to the calling digital phone. Reply 36.

Then, the central processing unit 30 in the called-side digital telephone controls the control terminal S of the multiplexer 40 to respond to the response message 37 of the central processing unit 30 through one terminal of the multiplexer 40. That is, it controls so that a message indicating that the entity of the data communication service desired by the user is the host computer is transmitted to the calling digital phone through the data codec 10.

Subsequently, the user of the calling digital phone receiving the response message confirms that the entity of the data communication service connected to the called party is the host computer, and controls the control terminal S of the multiplexer 40 by the CPU 300. The data signal of the interface 20 that provides a connection with the host computer is applied to the data codec 10 through the 0 terminal according to the input signal of) to perform the data communication service between the user and the host computer using the PABX system. .

As described above, the present invention is connected to the called party by sending a response message indicating the entity connected to the called party before receiving the normal data service when calling the called digital phone to connect the entity of the data communication service. It is possible to easily recognize what the entity, thereby allowing the data communication service user to be provided with the data communication service very conveniently as well as the correct connection with the service entity.

Claims (1)

The data codec 10 converts an asynchronous data signal input from the PABX system into the digital telephone into a PCM signal, and receives a PCM signal converted and output by the data codec 10 to the data communication service performing apparatus. An interface 20 for providing a connection, a central processing unit 30 for controlling a response procedure of a called digital telephone and transmitting a response message according to an originating call signal input through a PABX system main body; A 2x1 multiplexer which selects a data signal of the interface 20 or a response message of the central processing unit 30 according to the control signal of 30 and outputs it to the calling digital telephone through the data codec 10. Response message transmission device of a digital telephone, characterized in that consisting of (40).