KR100227505B1 - Digital telephone having port connected with ordinary telephone - Google Patents

Abstract

It is an object of the present invention to provide a versatile digital telephone equipped with a general telephone port.

A multipurpose digital telephone according to the present invention includes a keypad (21); A liquid crystal screen display section 22 and a light emitting diode section 23; A handset 24; A tone generator 25 for generating a composite frequency tone and a ring signal; A normal telephone ring supply unit 32; A general telephone hook monitoring unit 33; A normal telephone dial monitoring unit 34; The audio signal and the composite frequency signal, which are connected to the handset 24 and the tone generation unit 25 and are connected to the handset 24 and the tone generation unit 25 and input or generated by the handset 24 and the tone generation unit 25, Tone control channel 26 constituting a transmission path of tone; A codec unit 27 connected to the control unit 26 and the tone generation unit 25 to convert the digital signal and the analog signal to each other; A channel separator 35 connected to the codec unit 27 and separating the signal from the signal; A digital communication unit (28) connected to the channel separator (35) for exchanging a signal with the exchange unit; A common telephone CODEC unit 36 connected to the channel separator 35 for converting the PCM signal and the analog signal into each other; A general telephone power supply unit 37 for supplying power to the general telephone codec unit 36 and the like; A processor 29 for controlling the keypad 21 and the like; A memory unit 30 for storing programs, data and the like necessary for the processor 29 to operate; And a clock generating unit 31 for generating and supplying a clock to the codec unit 27 and the like.

Description

A versatile digital telephone equipped with an ordinary telephone connection port

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone, and more particularly, to a versatile digital telephone which exchanges voice signals with a telephone exchange in the form of a PCM signal.

A multipurpose digital telephone is connected to an exchange through two voice channels and one data channel transmitted in the form of a PCM signal.

FIG. 1 is a functional block diagram of a conventional multipurpose digital telephone.

Referring to FIG. 1, a conventional multipurpose digital telephone includes a keypad 1 for a user to input a telephone number; A liquid crystal display (LCI): 2) and a light emitting diode unit 3 for displaying the operating state of the telephone; A handset (4) for outputting or inputting a voice signal; A tone generator 5 for generating a dual tone multi frequency and a ring signal; A voice signal and a composite frequency tone inputted to or generated from the handset 4 and the tone generator 5 are sent to the switchboard connected to the handset 4 and the tone generator 5 and the voice signal from the switchboard is sent to the handset A control unit 6 which constitutes a sending channel; The control unit 6 and the tone generation unit 5 to generate a voice signal and a composite frequency signal which are inputted or generated by the handset 4 and the tone generation unit 5 as an analog signal, A codec unit 7 for converting the tone into a digital signal; A digital communication unit 8 connected to the codec unit 7 for exchanging voice signals and data with the exchange; A processor 9 connected to the keypad 1, the liquid crystal display unit 2, the light emitting diode unit 3, the tone generator 5, the call control unit 6 and the digital communication unit 7 to control them; ; A memory unit 10 for storing programs, data and the like necessary for the processor 9 to operate; A clock connected to the codec unit 7, the digital communication unit 8 and the processor 9 in synchronization with a basic rate interface (BRI) 8) and a processor (9).

The operation of the conventional multipurpose digital telephone will be described. First, when the user inputs the telephone number of the other party through the keypad 1, the tone generator 5 generates a corresponding complex frequency tone.

The composite frequency tone generated by the tone generator 5 is transmitted to the user via the control unit 6 and the handset 4 as a call.

The composite frequency tone generated by the tone generator 5 and the input dial information are converted into a digital signal by the codec unit 7 and then transmitted to the exchange via the digital communication unit 8. [

The processor 9 transmits the dial information input by the user to the digital communication unit 8, and the digital transmission unit 8 transmits the dial information to the exchange.

The exchange analyzes the dial information received from the digital transmission unit 8 to call the called party and transmits the called party's telephone status information via the data channel to the processor 9 of the calling party's telephone via the digital communication unit 8 .

The processor 9 displays the received called party's phone status information on the liquid crystal screen display unit 2 and the light emitting diode 3.

The exchange forms a call path when the called subscriber answers.

The analog voice signal of the caller is converted into a digital voice signal by the codec unit 7 and then transmitted to the exchange via the digital communication unit 8. The voice signal of the digital voice form of the callee is converted by the codec unit 7 into an analog signal And then transmitted to the user through the control unit 6 and the handset 4 as a call.

Conventional multipurpose digital telephone sets have two voice channels and one data channel, which are transmitted in the form of PCM signals, but use only one voice channel and one data channel, .

An object of the present invention is to provide a versatile digital telephone equipped with a general telephone port.

1 is a functional block diagram of a conventional multipurpose digital telephone.

FIG. 2 is a functional block diagram of a multipurpose digital telephone according to the present invention; FIG.

DESCRIPTION OF THE REFERENCE NUMERALS

1, 21: keypad 2, 22: liquid crystal display

5, 25: tone generation unit 6, 26:

7, 27, 36: Codec unit 8, 28: Digital communication unit

9, 29: processor 11, 31: clock generator

10, 30: memory unit 35: channel separator

A multipurpose digital telephone according to the present invention includes a keypad (21) used for a user to input a telephone number; A liquid crystal screen display section (22) and a light emitting diode section (23) for displaying the operating state of the telephone; A handset (24) for outputting or inputting a voice signal; A tone generator 25 for generating a composite frequency tone and a ring signal; A normal telephone ring supply unit 32 for supplying a 20-Hz ring signal transmitted to a general telephone; A general telephone hook monitoring unit (33) for monitoring the hook state of the general telephone set; A normal telephone dial monitoring unit 34 for detecting dial information of a general telephone set; A voice signal and a composite frequency tone inputted to or generated by the handset 24 and the tone generator 25 are sent to the switchboard connected to the handset 24 and the tone generator 25 and the voice signal from the switchboard is sent to the handset 24), a call control unit In the case of being used as a digital telephone by being connected to the control unit 26 and the tone generating unit 25 as a telephone call, the PCM signal transmitted from the exchange is inputted as an analog signal to the handset 24 and the tone generating unit 25, A codec unit 27 for converting the audio signal and the composite frequency tone into a digital audio signal; A channel separator 35 connected to the codec unit 27 for separating the digital signal into a channel for a digital telephone or a channel for a conventional telephone; A digital communication unit (28) connected to the channel separator (35) for exchanging a signal with the exchange unit; A common telephone CODEC unit 36 for converting a PCM signal transmitted from an exchange into an analog signal and converting a voice signal input through a general telephone into a PCM signal when the telephone is connected to the channel separator 35, ; A normal phone power supply unit 37 connected to the general phone codec unit 36, the normal phone ring supply unit 32, the normal phone hook monitoring unit 33, and the normal phone dial monitoring unit 34 to supply power; The keypad 21, the liquid crystal screen display unit 22, the light emitting diode unit 23, the tone generator 25, the call control unit 26, the digital communication unit 27, the general telephone ring supply unit 32, A processor 29 connected to and controlling the hook state monitoring unit 33 and the ordinary telephone dial monitoring unit 34; A memory unit 30 for storing programs, data and the like necessary for the processor 29 to operate; A clock connected to the codec unit 27, the digital communication unit 28, the processor 29 and the general phone codec unit 36 in synchronization with the basic speed interface sent from the exchange, And a clock generating unit 31 for supplying the signal to the communication unit 28, the processor 29, and the ordinary telephone set codec unit 36.

The tone generator 25 is directly connected to the channel separator 35 when a tone is generated in the tone generator 25 in the form of a digital signal.

The operation of the versatile digital telephone according to the present invention will be described.

First, when the user inputs a phone number of the other party through the keypad 21, the tone generator 25 generates a corresponding composite frequency tone.

The composite frequency tone generated by the tone generation unit 25 is delivered to the user via the control unit 26 and the handset 24 in the call.

The composite frequency tone generated by the tone generating unit 25 is converted into a digital signal by the codec unit 27 and then separated into a channel for the digital telephone in the channel separator 35 and then transmitted to the exchange through the digital communication unit 28 .

The processor 29 transmits the dial information input by the user to the digital communication unit 28, and the digital transmission unit 28 transmits the dial information to the exchange.

The exchange analyzes the dial information received from the digital transmission unit 28 to call the called party, and transmits the called party's telephone status information via the data channel to the processor 29 of the calling party's telephone through the digital communication unit 28 .

The processor 29 displays the received called party's phone status information on the liquid crystal screen display unit 22 and the light emitting diode 23.

The exchange forms a call path when the called subscriber answers.

The voice signal of the calling subscriber is transmitted to the codec unit 27 via the handset 24 and the call control unit 6 and the analog voice signal is converted into the PCM signal in the codec unit 27.

The voice signal converted into the PCM signal by the codec unit 27 is separated from the channel separator 35 into the channel for the digital telephone and is transmitted to the exchange through the digital communication unit 28.

The voice signal from the called subscriber is separated from the channel separator 35 by the channel for the digital telephone and is transmitted to the codec unit 27. The codec unit 27 converts the voice signal into the analog voice signal And outputs it to the calling subscriber via the control unit 26 and the handset 24 in conversation.

The processor 29 monitors the hook state of the user of the general telephone through the general telephone hook status monitoring unit 33 and transmits information about the hook state to the digital communication unit 28 through the data channel And then notifies the exchange.

When the user of the general telephone hooks off the telephone, the exchange transmits a dial tone, and the transmitted dial tone is separated from the channel separator 35 into the channel for the ordinary telephone, And then output to the user through a general telephone.

When the general telephone user dials, the processor 29 obtains the dial information through the normal telephone dial monitoring unit 34, and notifies the exchange through the data communication channel 28 via the data channel.

The exchange analyzes the dial information received from the digital transmission unit 28 to call the called party, and transmits the called party's telephone status information via the data channel to the processor 29 of the calling party's telephone through the digital communication unit 28 .

The processor 29 displays the received called party's phone status information on the liquid crystal screen display unit 22 and the light emitting diode 23.

The exchange forms a call path when the called subscriber answers.

The voice signal of the subscriber of the ordinary telephone set is converted into a digital voice signal by the general telephone codec unit 36, then separated into the channel for the normal telephone in the channel separator 35 and transmitted to the exchange through the digital communication unit 28.

The voice signal from the called subscriber to the telephone via the exchange is separated from the channel separator 35 by the channel for the ordinary telephone and is transmitted to the ordinary telephone codec unit 36. The coil telephone codec unit 36 transmits the voice signal, Converts the voice signal into an analog voice signal, and outputs it to a general telephone.

The exchange 29 notifies the processor 29 via the digital communication unit 28 to supply the ring signal to the general telephone so that the processor 29 can transmit the ring signal to the normal telephone ring supply unit 2, So that the ring signal is supplied to the general telephone. When the user of the ordinary telephone hooks off the telephone, the processor 29 notifies the exchange to the telephone ring supply unit 32 and cuts off the supply of the ring signal.

When the exchange forms a call path, the call is made in the same way as when the call is made to the ordinary telephone.

As described above, in the present invention, a multi-function digital telephone includes a channel separator, a general telephone codec unit, a general telephone power supply unit, a general telephone ring supply unit, a general telephone hook monitoring unit, and a general telephone dial monitoring unit, Port and configures a normal telephone conversation using one of the two voice channels allocated to the digital telephone, so that a general telephone can be connected to the versatile digital telephone and a call can be made with the other party.

Claims (1)

A keypad 21 used for a user to input a telephone number; A liquid crystal screen display section (22) and a light emitting diode section (23) for displaying the operating state of the telephone; A handset (24) for outputting or inputting a voice signal; A tone generator 25 for generating a composite frequency tone and a ring signal; A normal telephone ring supply unit 32 for supplying a 20-Hz ring signal transmitted to a general telephone; A general telephone hook monitoring unit (33) for monitoring the hook state of the general telephone set; A normal telephone dial monitoring unit 34 for detecting dial information of a general telephone set; A voice signal and a composite frequency tone inputted to or generated by the handset 24 and the tone generator 25 are sent to the switchboard connected to the handset 24 and the tone generator 25 and the voice signal from the switchboard is sent to the handset 24), a call control unit In the case of being used as a digital telephone by being connected to the control unit 26 and the tone generating unit 25 as a telephone call, the PCM signal transmitted from the exchange is inputted as an analog signal to the handset 24 and the tone generating unit 25, A codec unit 27 for converting the audio signal and the composite frequency tone into a digital audio signal; A channel separator 35 connected to the codec unit 27 for separating the digital signal into a channel for a digital telephone or a channel for a conventional telephone; A digital communication unit (28) connected to the channel separator (35) for exchanging a signal with the exchange unit; A common telephone CODEC unit 36 for converting a PCM signal transmitted from an exchange into an analog signal and converting a voice signal input through a general telephone into a PCM signal when the telephone is connected to the channel separator 35, ; A normal phone power supply unit 37 connected to the general phone codec unit 36, the normal phone ring supply unit 32, the normal phone hook monitoring unit 33, and the normal phone dial monitoring unit 34 to supply power; The keypad 21, the liquid crystal screen display unit 22, the light emitting diode unit 23, the tone generator 25, the call control unit 26, the digital communication unit 27, the general telephone ring supply unit 32, A processor 29 connected to and controlling the hook state monitoring unit 33 and the ordinary telephone dial monitoring unit 34; A memory unit 30 for storing programs, data and the like necessary for the processor 29 to operate; A clock connected to the codec unit 27, the digital communication unit 28, the processor 29 and the general phone codec unit 36 in synchronization with the basic speed interface sent from the exchange, And a clock generating unit (31) for supplying the clock signal to the communication unit (28), the processor (29) and the ordinary telephone set codec unit (36), and a general telephone connection port is formed.