KR19980084885A - ISDN telephone device - Google Patents

Abstract

The present invention relates to an ISDN telephone apparatus suitable for enabling connection between both ISDN subscribers and U / S lines. In the prior art, the conventional technology does not support both the S / U-line and only the S-line and the U-line. -It was impossible to selectively use the two lines by supporting only one of the lines, and although the power was supplied from the network termination device or the exchanger, there was a narrow width of service, but in the present invention, the S / U line matching device It can be configured to use selectively, and by using both the power supply is supplied from the network termination device 110, supplied from the exchanger 100, or when receiving commercial power, the power use is free, S-line U The above-mentioned shortcomings can be improved by enabling connection with either type of service.

Description

ISDN telephone device

The present invention relates to an ISDN telephone apparatus connected to an electronic switchboard and serving an ISDN (Integrated Service Digital Network) service, and more particularly, to an ISDN telephone apparatus capable of connecting both ISDN subscribers and U / S lines.

In the conventional ISDN telephone, a connection method using S-matching through a network terminal is applied for connection between an ISDN subscriber and an exchange.In recent years, an ISDN telephone having a built-in network termination apparatus and a U-matching Used.

However, in the conventional technology, the existing product does not support both S / U-lines and only supports one of the S- and U-lines. Therefore, it is impossible to selectively use the two lines. There is a drawback of narrow service because of being supplied from an end device or exchange.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, to enable the use of the S-line and U-line matching device selectively, and to use both the network termination device, the exchanger and the commercial power supply even when using the power It is an object to provide an ISDN telephone apparatus that makes it possible.

In order to achieve the above object, the present invention, the S-line jack for connecting the line converted from the U-line of the switchboard supporting ISDN (Integrated Service Digital Network) to the S-line via the network termination device and the ISDN telephone and A four-wire signal with a U-line jack that connects the U-line coming from the exchanger directly to the ISDN telephone, a first transformer that converts the voltage coming from the S-line jack, and a two-wire signal received from the U-line jack. A first ISDN channel control unit for matching a second transformer for conversion, an S-line signal received at an S-line jack, a U-line matching transceiver for transmitting / receiving a signal received from a U-line jack, A second ISDN channel control unit for processing a U-matching scheme, a first switch for switching to use one of a 40V power source and a -48V power source, and a power source of one of a 40V power source and a -48V power source from the first switch; + 5V power supply A voltage module for switching to a power supply; a voltage regulator for receiving power from an adapter; switching to a + 5V power; a second buffer for receiving and transmitting a signal from a second ISDN channel controller; and a first ISDN channel. A first buffer for receiving and transmitting signals from a control unit, a second switch for selectively connecting to one of U-line and S-line, and a second buffer from a B channel of a second ISDN channel controller An audio and data processor for processing an audio signal and a data signal, an input / output controller connected to a screen key input unit for controlling output of information received from an exchange and controlling an input from a subscriber, a first ISDN channel controller, A main controller connected to and controlled by a second ISDN channel controller, a first buffer, a second buffer, an audio and data processor, and an input / output controller, and a U / S for selecting a U-line and an S-line To provide the ISDN telephone apparatus which comprises including a selection.

1 is a block diagram showing a connection between an ISDN telephone and an exchange according to the present invention;

2 is a block diagram of an ISDN telephone according to the present invention;

<Description of the code | symbol about the principal part of drawing>

100: switch 110: network termination device

120: ISDN telephone 200: S-line jack

202: U-line jack 210: the first transformer

212: first switch 214: second transformer

220: first ISDN channel control unit 222: U-line matching transmission and reception unit

224: voltage module 226: voltage regulator

228: second ISDN channel control unit 240: first buffer

242: second buffer 244: second switch

250: audio and data processing unit 252: input and output control unit

254: main control unit 256: U / S line selection unit

The above and other objects and various advantages of the present invention will become more apparent from the preferred embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

Looking at the configuration of the present invention, the S-line jack 200 and the switch 100 to connect the line converted from the U-line to the S-line via the network termination device 110 and the ISDN telephone 120, A U-line jack 202 for directly connecting the incoming U-line from the first, a first transformer 210 for converting the voltage coming from the S-line jack 200, and 2 received from the U-line jack 202. A second transformer 214 for converting a line signal into a four-wire type, a first ISDN channel controller 220 for matching with an S-line matching device, and a U-line for transmitting / receiving a signal received from a U-line A matching transceiver 222, a second ISDN channel controller 228 processing a U-matching scheme, a first switch 212 for switching to use one of a 40V power supply and a -48V power supply, and a first switch A voltage module 224 for receiving a power supply of one of a 40V power supply and a -48V power supply from the 212 and switching the power supply to a + 5V power supply; A memory regulator between the voltage regulator 226 that receives power from the power supply and switches to a + 5V power supply, the second ISDN channel controller 228, the U-line matched transceiver 222, and the audio and data processor 250. A second buffer 242, a first buffer 240 serving as a memory between the first ISDN channel controller 220, the audio and data processor 250, and the input / output controller 252, the U-line, and the S buffer. A second switch 244 for selectively connecting to one of the lines and a signal input through the second buffer 242 from the B channel of the second ISDN channel controller 228 to process the audio signal and the data signal. An audio and data processor 250, an input / output controller 252 connected to a screen key input unit to control output of information received from the switch 100 and an input from a subscriber, and a first ISDN channel controller ( 220), second ISDN channel control unit 228, first buffer 240, second burr 242, a main control unit 254 connected to and controlled by the audio and data processing unit 250 and the input / output control unit 252, and a U / S line selection unit 256 selecting U-lines and S-lines. do.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

First, referring to Figure 1 for a block diagram showing the connection between the ISDN telephone and the switch, S-line jack 200 is a network termination device 110 for receiving a U-line signal coming in a two-wire type from the switch 100 ) And converts the incoming signal line, which is converted into four lines, which is an S-line, into the ISDN telephone 120 and a jack, and the signal received from the network termination apparatus 110 in the ISDN telephone 120 in the first ISDN channel controller ( 220) to handle S-matching schemes that meet ITU-T I.430.

The S-line is connected by four wires in the network termination device 110, and the power is included in the signal line and transmitted, and the power line is detected and used therein.

The U-line jack 202 connects the U-line coming from the switchboard 100 with the ISDN telephone 120, and separates power only to the first switch 212, and connects with the subscriber of the ISDN telephone 120. The connection part is connected by BRI (Basic Rate Interface), (2B + D) for ISDN control, and supports U-matching method.

The U-line matching transceiver 222 and the second ISDN channel controller 228 control layers-1, 2, and control U-line matching and transmission of two-way bidirectional lines constituting Layer-1 to 2B + D. It is connected without the network termination device 110.

The first transformer 210 selectively extracts only + 40V power input from the S-line when the + 40V power input from the S-line jack 200 and the -48V power supply supplied from the exchanger 100 are used. 224).

The second transformer 214 receives and converts the two-wire signal received from the U-line jack 202 of the switch 100 into four-wire, thereby making it convenient for signal processing in the ISDN telephone 120.

The first ISDN channel control unit 220 is an ISDN subscriber S-line controller and is connected through the network termination device 110 in the switch 100.

The first ISDN channel controller 220 receives a signal from the first transformer 210, receives a signal from the main controller 254 based on an address, data, and IOM2 signal, and classifies the signals into the first buffer 240. Transmit / receive, depending on the environment where the user of the ISDN telephone 120 can connect, the S-matching method and the U-matching method, respectively, through the control of the main controller 254 in the input / output control unit 252, respectively. ISDN controller 220, 228 is selected and used.

The U-line matched transceiver 222 satisfies 2B + D satisfying ITU-T I.430, uses block coding of 2B1Q scheme, and the U-line matched transceiver 222 of the switch 100 The signal received from the U-line is matched with a signal used by the ISDN telephone 120 to transmit / receive the signal to the exchange 100.

The second ISDN channel controller 228 classifies the signals under the control of the main controller 254 with address, data, and IOM2 signals, respectively, and controls the U-line matching transceiver 222 by controlling the B / D channel. The second ISDN channel controller 228 controls the S-matching method and the U-matching method through the control of the main controller 254 according to an environment in which the ISDN telephone 120 user can connect, respectively. The controllers 220 and 228 may be selected and processed.

The first and second ISDN channel controllers 220, 228 control the B / D channels at each 2B + D, and the D channel controllers provide high speed for detecting and generating flags, zero bit insertion and removal, and error detection. Fast Circuit Switching (FCS) processing and address verification function, the B channel controller is responsible for switching the B channel.

The data of the first ISDN channel controller 220 and the second ISDN channel controller 228 are read by the main controller 254 using interrupts.

When the power is supplied from the switch 100, -48V is input to the U-line, and is supplied to one jack, and + 40V is input to the S-line, and the commercial power is supplied to the DC 9V to 12V using the adapter. We may input.

The first switch 212 selectively uses the + 40V power supplied through the S-line via the network termination device 110 and the one power required by the user of the ISDN telephone 120 of the -48V received from the switch 100. Switch to

The voltage module 224 receives the power of one of the + 40V power supply and the -48V power supply under the control of the main control unit 254 according to the user's request from the first switch 212 described above. Switch to a 5V supply.

The voltage regulator 226 receives the power of 9V-12V transformed from the adapter to the external power supply, converts the power to + 5V power, and provides a constant constant voltage of + 5V.

The second buffer 242 serves as a memory temporary memory of the IOM2 data bus between the second ISDN channel controller 228 and the U-line matched transceiver 222, and the first ISDN channel controller 220 and the audio and data processor. It serves as a memory between the 250 and the input / output controller 252.

The second switch 244 transmits the information of the selected line to the main control unit 254 according to the selection of the input / output control unit 252 U / S line selection unit 256, and the main control unit 254 transmits the corresponding first / first line. 2 Enable or disable the ISDN channel control unit, and enable or disable the corresponding buffers 240 and 242 to selectively connect one of the U-line and S-line.

The audio and data processor 250 converts the digitized voice signal input through the second buffer 242 into an analog signal in the B channel of the second ISDN channel controller 228 or converts the analog signal from the handset into a digital signal. Filter function is performed, and there are various tone generators inside to make ring, buzzer sound, volume adjustment, etc.

The input / output controller 252 is connected to the screen unit and the key input unit to control the output of the information received from the switch 100 and to control the input from the subscriber. For example, the key input unit is composed of 40 keys. The key input unit is used to decode an address and use it as a key scan input, and to search for a pressed key using data input at the address input as a key scan output value.

In addition, the screen display unit uses a 24x4 liquid crystal display as an example, and configures a separate liquid crystal display for displaying a key state.

The main controller 254 is a part for controlling various device functions of the apparatus, and is composed of a processor, a memory, a personal computer connection control apparatus, and the like.

The processor has a serial communication function, timer function, input / output capability, and interrupt control function. In memory, programs are stored and used, and various data are stored in RAM. RAM can use backup power with main power, so data is maintained without loss even when power is turned off. In addition, a personal computer and communication function are provided to manage this data. For this purpose, a port for RS-232 communication is configured. The reset supports a power-on reset and a software reset.

The U / S line selector 256 may be configured by a jumper or other dip switches, and is preferably located outside the ISDN telephone 120 at the user's convenience.

As described above, the present invention is configured to selectively use the S / U line matching device, the power use is applied to both when supplied from the network termination device or supplied from the exchanger 100 or when receiving commercial power. As a result, the use of power is free, and the S-line U-line can be connected to either type of service.

The principles of the invention have been described above in connection with specific devices, which are described by way of example only, and are not limited to the spirit of the invention as described in the appended claims.

Claims (8)

An S-line jack 200 for connecting the line converted from the U-line of the exchange 100 supporting the ISDN (Integrated Service Digital Network) to the S-line via the network termination device and the ISDN telephone 120; A U-line jack 202 for directly connecting the U-line coming from the exchange 100 with the ISDN telephone 120; A first transformer 210 for converting a voltage coming from the S-line jack 200; A second transformer 214 for converting the 2-wire signal received from the U-line jack 202 into a 4-wire signal; A first ISDN channel controller 220 matching the S-line signal received from the S-line jack 200; A U-line matching transceiver 222 for transmitting / receiving a signal received from the U-line jack 202, A second ISDN channel control unit 228 for processing the U-matching scheme, A first switch 212 for switching to use either a 40 V power supply or a -48 V power supply; A voltage module 224 that receives one of a 40V power supply and a -48V power supply from the first switch 212 and converts the power supply into a + 5V power supply; A voltage regulator 226 that receives power from an adapter and switches it to a + 5V power supply; A second buffer 242 for receiving and transmitting a signal from the second ISDN channel controller 228; A first buffer 240 for receiving and transmitting a signal from the first ISDN channel controller 220; A second switch 244 selectively connecting to one of the U-line and the S-line; An audio and data processor 250 for processing an audio signal and a data signal from a B channel of the second ISDN channel controller 228 through the second buffer 242; An input / output controller 252 connected to a screen key input unit for controlling output of information received from the switchboard 100 and controlling input from a subscriber; The first ISDN channel controller 220, the second ISDN channel controller 222, the first buffer 240, the second buffer 242, the audio and data processor 250, and the input / output controller 252. Main controller 254 connected to and controlled), And a U / S line selector (256) for selecting the U-line and the S-line. The method of claim 1, The first transformer 210 selectively pulls only + 40V power input from the S-line when the + 40V power input from the S-line jack 200 and the -48V power supply supplied from the exchanger 200 are used. An ISDN telephone device, characterized in that it is coupled to (224). The method of claim 1, The second transformer 214 receives the two-wire signal received from the U-line jack 202 and converts it into four-wire, thereby converting it into a signal suitable for signal processing in the ISDN telephone 120 ISDN telephone device. The method of claim 1, The first ISDN channel controller 220 receives a signal from the first transformer 210 and is controlled by the main controller 254 with an address, data, and IOM2 signal, respectively, to classify the respective signals and classify the signal. The first ISDN controller transmits / receives to the buffer 240 and controls the S-matching method and the U-matching method through the control of the main controller 254 according to an environment in which an ISDN telephone 120 user can connect. And a second ISDN controller (228) to control the selected ISDN telephone apparatus. The method of claim 1, The second ISDN channel controller 228 classifies the signals under the control of the main controller 254 with address, data, and IOM2 signals, respectively, and controls the U-line matching transceiver 222 by controlling the B / D channel. The second ISDN channel controller 228 controls the S-matching method and the U-matching method through the control of the main controller 254 according to an environment in which the ISDN telephone 120 user can connect, respectively. ISDN telephone apparatus, characterized in that for selecting and processing the control unit (220, 228). The method of claim 1, The voltage module 224 receives one of a + 40V power supply and a -48V power supply from the first switch 212 under the control of the main controller 254 according to a user's request, and is used for the ISDN telephone 120. ISDN telephone apparatus, characterized by switching to a + 5V power source. The method of claim 1, The voltage regulator (226) is an ISDN telephone apparatus, characterized in that for receiving the power of the 9V to 12V transformed from the adapter to the power supply of + 5V, and provides a constant constant voltage of + 5V. ISDN phone power: Power supplied from the switch 100 by inputting -48V and being combined with a U-line to one jack; With + 40V input to the S-line, An ISDN telephone apparatus, comprising: a commercial power supply comprising a power supply receiving DC 9V-12V power using an adapter.