KR100197427B1 - Network synchronization apparatus in tdx-100 full electronic switching system - Google Patents

Abstract

The present invention relates to a network synchronizing apparatus for an electronic switching system suitable for network synchronization with other exchangers in a TDX-100 all-electronic exchanger. In the present invention, a first trunk line matching unit (110) The second relay line matching unit 120 outputs a synchronous reference clock and a frame alarm for allowing the relay line matching to be performed in the T1 mode and outputs the synchronous reference clock and the frame alarm to the transmitting unit 130. [ The synchronous reference clock according to the T1 or E1 scheme is output and the synchronous base unit 140 receives the synchronous reference clock and the frame alarm from the first and second trunk matching units 110 and 120 and the transmitting unit 130, The PCM channel distributor 160 transmits clocks CP and / FP to the spatial division switch unit 150. The spatial division switch unit 150 receives the clock transmitted from the synchronous base unit 140, 0) with the PCM and distributes the channel to the processor of the corresponding device, thereby matching with other blocks.

Description

Network synchronizer of all electronic exchanger

FIG. 1 is a block diagram of a typical switching system; FIG.

FIG. 2 is a block diagram showing an embodiment of a network synchronizing apparatus of an all-electronic exchanger according to the present invention. FIG.

FIG. 3 is a waveform diagram for explaining the output of the motor base according to FIG. 2; FIG.

4 is a circuit diagram for explaining an embodiment of the connection of the metallic base part and the PCM channel distribution part according to FIG. 2;

5 is a diagram depicting one embodiment of a PCM bus connector connection of a metacarpal base according to FIG. 2;

DESCRIPTION OF THE REFERENCE NUMERALS

110, 120: first and second trunk matching unit 130:

140: ridge base part 150: space division switch part

160: PCM channel distributor 200: 41MG

210: 41MF

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a network synchronizing apparatus of an electronic exchanger, and more particularly, to a network synchronizing apparatus of a TDMA-100 electronic exchanger, which is suitable for synchronizing with other exchangers.

In this connection, FIG. 1 shows the construction of a general exchanger system, reference numeral 10 denotes a switching network, reference numeral 20 denotes a subscriber connection, reference numeral 30 denotes an inter-station line connection, reference numeral 40 denotes an operation management saving section, Reference numeral 50 denotes a signal network connection unit, and reference numeral 60 denotes a switching control unit.

In the conventional exchanger system configured as described above, the switching network 10 performs a function of exchanging actual signals, and the subscriber connection unit 20 performs a function of connecting signals of the subscriber to the switching network 10 And the inter-station line connection unit 30 converts the signals coming from the trunk line so that the signals coming from the trunk line are in a proper form to be connected to the switching network 10.

Next, the operation management and maintenance unit 40 performs a function for managing and maintaining the operation of the exchange system, and at the same time provides a connection with the operation assist systems (not shown in the figure) of the communication network and the signal network connection unit 50 (Not shown in the figure) to the signal network and the communication network, and the exchange control unit 60 is connected to each of the switching network 10, the operation management saving unit 40, and the signal network connection unit 50 And performs a control function to perform all the operations as described above.

The exchanger is divided into a space division switching system and a time division switching system according to the type of the switching network 10 and is divided into a wired logic control and a stored program control ; SPC), and classified into a centralized control method and a distributed control method according to the degree of dispersion of control functions.

Also, current electronic exchanges use accumulation programming method, among which it is called an inverse subchannel to use a space division scheme, a time-division scheme is called a digital exchanger or a full electronic exchanger, and recent digital exchanges Most of them have adopted the distributed control method.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a network synchronizing apparatus of a full electronic exchanger suitable for matching with other blocks in a TDX-100 full-duplex exchanger.

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

Referring to FIG. 2, FIG. 2 is a block diagram illustrating an embodiment of a network synchronizing apparatus for an electronic switching system according to the present invention. The synchronizing reference clock and frame alarm A second trunk matching unit 120 for outputting a synchronous reference clock and a frame alarm for matching trunks in a T1 scheme, a synchronous reference clock generating unit 120 for outputting a synchronous reference clock according to the T1 or E1 scheme, (Clock Pulse) and / FP (Frame Pulse) synchronized with the synchronization reference clock and frame alarm from the first and second trunk matching units 110 and 120 and the transmission unit 130, A spatial division switch unit 150 for performing spatial division switching between a subscriber and a synchronous clock applied from the synchronous base unit 140; Code Modulation) And a PCM channel distribution unit 160 for distributing a channel to a processor of the device.

The present invention will now be described in detail with reference to FIGS. 3 to 5. FIG.

3 is a waveform diagram for explaining the output of the motor base 140 according to FIG. 2, FIG. 4 is a waveform diagram of an embodiment of the connection between the motor base 140 and the PCM channel distributor 160 according to FIG. 5 is a diagram illustrating one embodiment of the PCM bus connector connection of the motor base 140 according to FIG.

First, the first trunk line matching unit 110 outputs a 2.048 MHz synchronous reference clock and a frame alarm in order to perform Tr1 line matching using the E1 method (CEPT), and the second trunk line matching unit 120 outputs a 2.048- It outputs a 1.544MHz synchronous reference clock and frame alarm to match.

Next, the transmitter 130 outputs 1.544 MHz according to the T1 scheme or 2.048 MHz synchronous reference clock according to the E1 scheme. The transceiver unit 140 is composed of triplet and connected to the first and second trunk line matching units 110 and 120 and A maximum of three synchronous reference clocks and frame alarms are received from the transmitting unit 130 and a synchronous clock CP of 16.348 MHz (third degree (a)) and / FP 8 kHz (third degree (b)) are transmitted.

The spatial division switch unit 150 receives the clock transmitted from the base unit 140 and performs spatial division switching between subscribers. The PCM channel distribution unit 160 receives the clock transmitted from the base unit 140 through the PCM bus PCM match and distributes the channel to the processor of the device.

In the matching of the transit unit 140 and the PCM channel distribution unit 160, each unit transmits data using the 41 MG 200 as shown in FIG. 4 (a) ) Using the same 41MF (210).

In this case, two resistors 60Ω are connected in series between the input terminals of the 41MF (210), and a resistor 90Ω is connected between the two 60Ω contacts connected in series to the ground and the grounding terminal 140 is connected to the PCM bus connector It is shaped like a tile.

As described above, according to the present invention, in the TDX-100 electronic exchanger, the first trunk line matching unit 110 outputs a synchronous reference clock and a frame alarm for trine line matching in the E1 scheme, and the second trunk line matching unit 120 Outputs a synchronous reference clock and a frame alarm for allowing trine matching to be performed in the T1 system, and the transmitting unit 130 outputs a synchronous reference clock in accordance with the T1 or E1 system, and the synchronous reference unit 140 outputs the synchronous reference clock and the frame alarm, The synchronous reference clock and frame alarm are received from the trunk line matching units 110 and 120 and the transmission unit 130 and the clock CP and the synchronized FP are transmitted from the trunk matching units 110 and 120 and the transmission unit 130, The PCM channel distributor 160 can match the other block by distributing the channel to the processor of the corresponding device by PCM matching with the master synchronizer 140 The.

Claims (2)

A first trunk matching unit 110 for outputting a synchronous reference clock and a frame alarm for matching trunks in the E1 system, a second trunk matching unit 110 for outputting a synchronous reference clock and a frame alarm for trunk matching, A transmission unit 130 for outputting a synchronous reference clock according to the T1 or E1 scheme and a synchronous reference clock and frame alarm from the first and second trunk matching units 110 and 120 and the transmission unit 130 A spatial division switch unit 150 for performing spatial division switching between a subscriber and a synchronous clock applied from the synchronous base unit 140, And a PCM channel distributor (160) for distributing a channel to the processor of the corresponding device by PCM matching with the movable base (140), wherein the movable base (140) Wherein the PCM channel distributor (160) transmits the data using the 41MG (200) in the case of transmission and the 41MF (210) in the case of the reception. 3. The network switch of claim 1, wherein two resistors are connected in series between the input terminals of the 41MF (210) and a resistor (90) is connected between the two 60- Device.