KR100319080B1 - Apparatus for matching transmission lines in a variable speed communications network - Google Patents

Abstract

The present invention provides a relay line matching device in a variable speed transmission system communication network capable of providing a telephone service and a variable speed service in a fixed speed transmission system communication network by accommodating a function of analyzing data of each channel in a relay line of the variable speed transmission system communication network. To this end, the present invention provides a trunk interface for defining the electrical relay and the electrical / physical characteristics to configure a frame for data transmission with the power relay device; A channel controller which separates the grouped channels of the received information, analyzes / combines a channel necessary for transmitting signal information or frames for transmitting signal information, and distributes them in different paths according to the type of data carried in each channel; A communication control unit which monitors an operation state of the system and performs a communication function with an upper processor of the relay line matching device; A CPU that manages data protocol processing / call progress of the relay line matching device and controls the channel control unit based on the channel configuration information and the relay line information received from the upper processor through the communication control unit; A memory unit for storing information generated by the CPU and storing relay line call control or protocol status; A compression CODEC for compressing voice information provided from the channel controller according to the requested call quality and outputting the compressed voice information to the switch matching device; An HDLC control unit for performing layer-2 processing of the No. 7 signal and layer 2 processing of the data signal on the data information provided from the channel control unit; A switch ID control unit for designating a communication path to be called by distinguishing data information and compressed voice information and assigning respective IDs; By including a variable speed switch interface that is matched with the variable speed switch and transmits and receives data information and the compressed voice information with the variable speed switch, the structure of the exchange and the structure of the communication network can be simplified.

Description

Relay line matching device in variable speed transmission system communication network {APPARATUS FOR MATCHING TRANSMISSION LINES IN A VARIABLE SPEED COMMUNICATIONS NETWORK}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trunk line matching device in a variable speed transmission system communication network. In particular, the present invention relates to a relay line matching device in a fixed speed transmission system communication network. It relates to a relay line matching device.

In relation to the present invention, FIG. 2 is a diagram illustrating a configuration of a relay line matching device in a fixed speed transmission system communication network according to the prior art, and includes a trunk interface 210 and a channel controller 220. , A memory unit 230, a CPU 240, a communication controller 250, and a time division switch interface 260.

The conventional relay line matching device configured as shown in FIG. 2 performs a matching function of a fixed speed time switch (not shown) and other switch trunks (not shown). Referring to FIG. A detailed description of the relay line matching device is as follows.

First, the trunk interface 210 performs a function of configuring a frame for data transmission by defining an electrical / physical characteristic with a power relay device, and the channel controller 220 performs a B channel in addition to grouped channel separation such as H channel connection. And analyzing / combining a channel (common channel signaling (CCS)) required for signal information transmission or a frame (in case of R2) for signal information transmission.

In addition, the above-described channel control unit 120 generates and detects R2 MFC (R2 Multi-Frequency Compelled) tones used for CAS (Channel Associated Signaling) trunks, and continuity tones for monitoring the call path status of CCS trunks. It performs interworking with an external tone controller (not shown) that performs generation and detection functions.

In addition, the CPU 240 controls the above-described channel control unit 220 based on channel configuration information and relay line information (CCS / CAS) received from an upper processor (not shown), and at this time, various kinds of information generated from the CPU 240. Is stored in the memory unit 230.

The communication controller 250 monitors a system operation state or plays a role in communication with the upper processor of the relay line matching device. The time division switch interface 260 performs a matching function with a time switch (not shown) to relay the trunk line and the trunk. The information transmitted from the channel controller 220 connected through the interface 210 is transmitted to the time switch, and conversely, the information received from the time switch is transmitted to the relay line.

On the other hand, the conventional fixed speed transmission system relay line matching device configured as described above has a problem that the transmission efficiency of the time switch is lowered when transmitting data at a variable speed, such as rapidly increasing Internet communication.

In addition, another protocol processing unit must be provided in the system for protocol processing. For example, in order to perform CCS processing, a separate No.7 processing unit, a frame relay processing unit for frame relay processing, and a packet processing unit must be provided, respectively, so that frequent system changes are applied to apply a new protocol. There is a problem that is required.

Therefore, the present invention has been made to solve the above problems of the prior art, by devising a relay line matching device that can be accommodated in a variable speed transmission system communication network, the telephone service of the fixed speed transmission system and the data service of the variable speed transmission system In addition, the present invention provides a relay line matching device in a variable speed transmission system communication network that can be matched with an existing relay network.

In order to achieve the above object, the present invention provides a trunk interface in a relay line matching device in a variable speed transmission system communication network, which defines a electrical / physical characteristic with a power relay device and configures a frame for data transmission with the power relay device. ; A channel controller which separates the grouped channels of the received information, analyzes / combines a channel necessary for transmitting signal information or frames for transmitting signal information, and distributes them in different paths according to the type of data carried in each channel; A communication control unit which monitors an operation state of a system and performs a communication function with an upper processor of the relay line matching device; A CPU for managing data protocol processing / call progress of the relay line matching device and controlling the channel controller based on channel configuration information and relay line information received from the upper processor through the communication controller; A memory unit for storing information generated by the CPU and storing relay line call control or protocol status; A compression CODEC for compressing the voice information provided from the channel controller according to the requested call quality and outputting it to a switch matching device, and decompressing the voice information provided from the switch and transmitting the compressed voice information to the channel controller; An HDLC control unit performing layer-2 processing of the No. 7 signal and layer 2 processing of the data signal on the data information provided from the channel control unit; A switch ID control unit for designating a communication path to be received by assigning each ID by dividing the data information and the compressed voice information; A relay line matching device in a variable speed transmission system including a variable speed switch interface that is matched with a variable speed switch and transmits and receives the data information and the compressed voice information with the variable speed switch.

1 is a block diagram showing the configuration of a relay line matching device in a variable speed transmission system communication network according to a preferred embodiment of the present invention;

Figure 2 is a block diagram showing the configuration of a relay line matching device in a fixed speed transmission system communication network according to the prior art.

<Explanation of symbols for the main parts of the drawings>

110: trunk interface 120: channel control

130: memory unit 140: first compression CODEC

150: second compression CODEC 160: HDLC control unit

170: CPU 180: communication control unit

190: switch ID control unit 200: variable speed switch interface

Hereinafter, described in detail by the accompanying drawings, the present invention for achieving the above object is as follows.

1 is a block diagram showing a configuration of a relay line matching device in a variable speed transmission system communication network according to a preferred embodiment of the present invention. The trunk interface 110, the channel control unit 120, the memory unit 130, The first compression CODEC 140, the second compression CODEC 150, the HDLC control unit 160, the CPU 170, the communication control unit 180, the switch ID control unit 190, and the variable speed switch interface 200 are included.

Referring to FIG. 1, the trunk interface 110 defines a electrical relay and physical / physical characteristics to configure a frame for data transmission, and the CO channel controller 120 is grouped such as an H channel connection. In addition to channel separation, a path (L125), which will be described below, is analyzed and combined according to the type of data carried on the channel by analyzing / combining a B channel and a channel (for CCS) or a frame (for R2) for signal information transmission. The first and second compression CODECs 140 and 150 and the HDLC control unit 160 perform separate functions.

In addition, the channel control unit 120 generates and detects an R2 MFC (R2 Multi-Frequency Compelled) ring tone used for a CAS-type trunk, and generates and detects a continuity ring tone for monitoring the status of a call in a CCS-type trunk. Tone) Performs parallel operation with a controller (not shown).

The memory unit 130 is a means for storing information generated by the CPU 170 and relay line call control or protocol state, which will be described later. The first and second compression CODECs 140 and 150 depend on call quality. Compresses / decompresses voice information. Here, the first compression CODEC 140 is a 16 bit compression CODEC and the second compression CODEC 150 is an 8 bit compression CODEC. In the case where the compression / decomposition process of the voice information is not necessary, the processing is performed via the path L125.

On the other hand, the HDLC control unit 160 performs layer-2 (layer-2) processing of the No.7 signal and the layer 2 processing of data in the case of CCS type trunk, and the CPU 170 and the No.7 signal in case of the CCS trunk. Signal and data protocol processing / call progress of the CAS trunk is managed, and the above-described channel control unit 120 is controlled based on channel configuration information and relay line information (CCS / CAS) received from an upper processor (not shown).

In addition, the communication controller 180 monitors a system operation state or performs a transmission function with an upper processor of the relay line matching device, and the switch ID controller 190 distinguishes a communication path to be received by separating data and compressed voice information. The variable speed switch interface 200 performs a data transmission and reception function of a variable speed provided from the switch ID controller 190.

On the other hand, the service provided by the variable speed delivery system relay line matching device of the present invention configured as described above is divided into a data call and a voice call, with reference to Figure 1 will be described in detail the operation of the relay line matching device according to each call; As follows.

First of all, the operation of the relay line matching device starts with a preliminary consultation with the power device about channel operation characteristics (CAS, CCS). Accordingly, the trunk line matching device according to the present invention operates in advance so as to know in advance whether a power exchanger that can be processed with a CAS / CCS type can process a compressed voice signal at the beginning of the system operation or at the beginning of the relay line setup. .

The data received from the other network uses the path L125 because both the voice information and the data information are received in the form of HDLC when the exchange exchange processes the compressed voice, and the exchange exchange does not process the compressed voice. Only voice information in case of failure is processed by compression codec. In addition, the information to be transmitted from the other network is processed by the compression CODEC only when the voice information is transmitted to the power exchange that cannot process the compressed voice. Otherwise, it is processed in the form of HDLC through the path L125.

In general, the transmission and reception of the relay line data is transmitted and received in a frame structure that can be analyzed in the trunk interface 110, the relay line data is divided into voice information, data information, signal information, the voice information and data information after the path is set by the signal information Used for

Meanwhile, in the CAS method, a signal is carried on each channel information. In this case, the path setting is performed by an upper processor (not shown), and the signal information collecting procedure is as follows.

The signal received from the power station through the network divides the frame at the trunk interface 110, and the channel controller 120 analyzes each channel to extract signal information. At this time, the extracted information is transferred to the upper processor (not shown) through the CPU 170 and the communication control unit 180, and the CPU 170 receives a signal from the upper processor through the communication control unit 180 to control the channel control unit ( By controlling 120, signal information transmission is performed.

Meanwhile, in the CCS scheme, a signal is transmitted on specific channel information. At this time, the path setting is performed by an upper processor for processing No. 7 upper layer protocol and an upper processor for call control, and the signal information collecting procedure is as follows.

The signal received from the power station analyzes the frame in the trunk interface 110, and transmits a specific channel preset in the channel control unit 120 to the HDLC control unit 160, and the HDLC control unit 160 analyzes it to signal No. 7 Information will be extracted.

At this time, the extracted information is transmitted to the upper processor (not shown) through the microprocessor 170 and the communication control unit 180, and the CPU 170 again transmits the No. 7 signal information received from the upper processor to the communication control unit 180. Received through and transmitted to the HDLC control unit 160, the HDLC control unit 160 is processed in the corresponding protocol format to be transmitted to the channel control unit 120. In addition, the channel controller 120 transmits the information processed by the protocol to the predetermined channel through the trunk interface 110 to the power station.

The call path is set by this process, and then the information carried on the channel is divided into the voice information or the data information via the CPU 170 and the channel controller 120, and the CPU 170 is located at the point where the call is received. Will recognize the switch ID.

On the other hand, the process of the case where the information received from the power is a protocol-type data with HDLC is as follows.

The trunk interface 110 analyzes a frame of information received from a large power station through a network and transmits the information to the channel control unit 120. The channel control unit 120 separates the information on the transmitted data into the HDLC control unit. 160).

In addition, the HDLC controller 160 analyzes the layer-2 protocol and transmits the data to the switch ID controller 190, calculates the amount of data to be transmitted, and reports the amount of data to the CPU 170, and the CPU 170. Based on this, the data for billing / statistics is calculated and transmitted to the upper processor, not shown, through the communication control unit 170.

On the other hand, the switch ID controller 190 assigns a channel unique value (ID) defined in the path setting procedure to the data provided from the HDLC controller 160 and transmits it to the variable speed switch interface 200, and the variable speed switch. The interface 200 transmits the received data to a variable speed switch (not shown), thereby transmitting the data received from the power station to the destination point.

In addition, the reverse HDLC type data transfer process, that is, the process of receiving and processing the HDLC type data transmitted from the variable speed switch is performed in the reverse order of the above-described forward process.

On the other hand, the process of receiving and processing the voice information received from the power exchange that can not process the compressed voice in the relay line matching device is as follows.

The trunk interface 110 analyzes a frame of voice information received from a power station through a network and transmits the received frame information to the channel controller 120. The channel controller 120 separates a channel for the transmitted voice information and obtains information obtained therefrom. Is transmitted to the first compression CODEC 140 or the second compression CODEC 150 to compress the given call quality or the predetermined call quality in the call processing path setting step. When a high quality call quality is required, the first compression codec 140 is used to process the call. If the station has already transmitted the compressed voice information, it is bypassed to the variable speed switch interface 200 through the path L125.

The voice information compressed by the first compression codec 140 and the second compression codec 150 is transmitted to the switch ID controller 190, and the switch ID controller 190 performs a path setting procedure on the compressed voice information. A predetermined channel unique value ID is assigned to the variable speed switch interface 200. Therefore, the variable speed switch interface 200 transmits the received data to the destination point through an external variable speed switch (not shown), thereby enabling communication with the power station.

On the other hand, the reverse process for this, that is, the process of receiving the voice information from the relay line matching device from the variable speed switch (not shown) is as follows.

First, the information detected by the variable speed switch (not shown) is transmitted to the switch ID controller 190 through the variable speed switch interface 200, and the switch ID controller 190 transmits a channel unique value (ID) included in the received information. ) Is notified to the CPU 170.

The CPU 170 switches whether to use the first and second compression CODECs 140 and 150, the path L125, or the HDLC control unit 160 according to the channel and communication type used by the channel ID. The ID controller 190 is notified. Accordingly, the switch ID controller 190 may recognize the processing path for the corresponding channel unique value ID, and in the case of the device designated by the CPU 170, that is, the voice information, the path L125, the first or the like. The second compression codec 140 or 150 is transferred to the second compression codec 140 or 150. Here, the path L125 is used when the power exchange can process the compressed voice signal, and the first or second compression CODEC 140 or 150 is used when the power exchange cannot process the compressed voice signal. Used.

Therefore, the first or second compression CODEC 140 or 150 decompresses the transmission target information and converts it into general voice data, and transmits the converted data to the channel controller 120. In addition, the channel controller 120 loads the received voice information on the corresponding channel information and transmits the received voice information to the large station through the trunk interface 110 for processing.

As described above, according to the present invention, it is possible to simplify the structure of the exchange and the structure of the communication network by simultaneously receiving voice communication and data service by performing a variable speed matching process that could not be processed in the prior art using a relay line matching device. It has an effect.

Claims (1)

In a relay line matching device in a variable speed transmission system communication network, A trunk interface defining a power relay device and electrical / physical characteristics to configure a frame for data transmission with the power relay device; A channel controller which separates the grouped channels of the received information, analyzes / combines a channel necessary for transmitting signal information or frames for transmitting signal information, and distributes them in different paths according to the type of data carried in each channel; A communication control unit which monitors an operation state of a system and performs a communication function with an upper processor of the relay line matching device; A CPU for managing data protocol processing / call progress of the relay line matching device and controlling the channel controller based on channel configuration information and relay line information received from the upper processor through the communication controller; A memory unit for storing information generated by the CPU and storing relay line call control or protocol status; A compression CODEC which compresses and delivers voice information provided from the channel controller according to a requested call quality, and decompresses and transmits the compressed voice information to the channel controller when compressed voice information is provided from the outside; An HDLC control unit performing layer-2 processing of the No. 7 signal and layer 2 processing of the data signal on the data information provided from the channel control unit; A switch ID control unit for designating a communication path to be received by assigning each ID by dividing the data information and the compressed voice information; And a variable speed switch interface that is matched with a variable speed switch and transmits and receives the data information and the compressed voice information with the variable speed switch.