JP2000261519A - Apparatus of multi-protocol in exchange - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus of multi-protocol for an exchange that can accept all the V5.2 protocol, the integrated services digital network, the primary rate interface PRI protocol, the No.7 protocol and the frame relay protocol and process them. SOLUTION: This apparatus of multi-protocol is provided with an interconnection section 10 that is connected to a multi-protocol processing section 20 and a subscriber matching section 40 so as to match a subscriber device to be connected to the multi-protocol, with the multi-protocol processing section 20 that is connected to the interconnection section 10 and executes E1 physical layer, No.7, V5.2, ISDN, PRT and frame relay functions, and the subscriber matching section 40 that interfaces the interconnection section 10 and a subscriber device to match the subscriber device with the multi-protocol so that the subscriber device can use the multi-protocol function.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a protocol function device for an exchange, and more particularly, to a V5.2 protocol, an ISDN (Integrated Service Digital Network) in an exchange.
twork (Integrated Information Network); hereafter referred to as ISDN) PRI (Pr
The present invention relates to a multi-protocol function device of an exchange capable of accepting and processing both an imary rate access interface (primary rate interface, 2.048 Mbps); hereinafter, a PRI) protocol, a No. 7 protocol, and a frame relay protocol.

[0002]

2. Description of the Related Art A conventional switchboard is provided with respective hardware for processing a V5.2 protocol, an ISDN PRI protocol, a No. 7 protocol, and a frame relay protocol.

In this case, the protocol can be roughly divided into three layers. Layer 1 is a trunk line, layer 2 is a data link, and HDLC (High-l
Layer 3 is a network based on evelData Link Control (hereinafter referred to as HDLC).

In an exchange for processing such protocols, as shown in FIG. 3, an interconnection subsystem (1) and a No. 7 protocol function subsystem
(2) and ISDN PRI protocol function subsystem (3)
And a V5.2 protocol function subsystem (4), a frame relay protocol function subsystem (5), an E1 physical layer function subsystem (6), and a subscriber matching function subsystem (7). It had been.

[0005] However, there is no conventional example for the V5.2 protocol and the frame relay protocol.
In the o.7 protocol, a signal message is received via a trunk line and transmitted to the hardware that processes only the No.7 signal message via the time switch, space switch, and time switch inside the exchange in sequence. In the system, when transmitting a signaling message to the exchange of the partner station, the operation is performed in a direction opposite to the receiving direction.

[0006] During the ISDN primary rate protocol processing, the layer 1 receives the protocol message via the trunk line hardware device, transmits it to another hardware device, and processes only the layer 2 protocol. In the ware, after the protocol processing, it is transmitted to the layer 3.
When transmitting the ISDN primary rate protocol message, the protocol message is transmitted in the reverse direction of the above-described route.

[0007]

However, in such a conventional exchange, the V5.2 protocol, the ISDN PRI
There was an inconvenience that the protocol, the No. 7 protocol and the frame relay protocol could not be processed by one hardware system.

Accordingly, the present invention has been made in view of such a conventional problem, and an object of the present invention is to provide an exchange.
An object of the present invention is to provide a multi-protocol function device of an exchange which can accept and process both the V5.2 protocol, the ISDN PRI protocol, the No. 7 protocol and the frame relay protocol.

[0009]

In order to achieve the above object, in a multi-protocol function device for an exchange according to the present invention, a multi-protocol processing unit and a subscriber coordination unit are connected so that a subscriber is connected. An interconnect unit adapted to connect to multiple protocols, and a multiple protocol processing unit connected to the interconnect unit to perform an E1 physical layer, No. 7, V5.2, ISDN PRI, frame relay function; , A subscriber matching unit that performs an interface between the interconnecting unit and the subscriber and matches the subscriber to use the multiple protocol function.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

According to the present invention, when implementing hardware capable of supporting four types of protocols, it is necessary to implement hardware to support all hardware having some differences, and to execute each protocol. This is realized by software so that only the necessary hardware resources are selected.

FIG. 4 shows No. 7, V5.
2. The table below shows the functions of ISDN PRI and frame relay protocol.

First, in the case of the protocol of No. 7, 16 basic channels are used, and the first to 31st channels can be selected and used. In the case of the ISDN PRI protocol, each E1 physical layer Only the 16th channel can be used, for the V5.2 protocol, the 15, 16, 31st channels of each E1 physical layer can be used, and for the frame relay protocol, each E1 channel Separately use 31 pieces of 64Kbps each,
Six channels can be used as one unit, or 31 channels can be used as one unit.

In the multiplex protocol function device of the exchange according to the present invention, as shown in FIG. 1, the multiplex protocol processing unit (20) and the subscriber matching unit (40) are connected to Is connected so that it can connect to multiple protocols, and is connected to the interconnect (10) to provide the E1 physical layer, No. 7, V5.2, ISDN PRI, frame relay functions. A multiplex protocol processing unit (20) to perform;
And a subscriber matching unit (40) for interfacing between the interconnection unit (10) and the subscriber so that the subscriber can use the multiple protocol function.

The multiplex protocol processing unit (20) controls the execution of the program of the multiplex protocol processing unit (20) as shown in FIG. When an interrupt occurs in a block, the central processing unit (2
1), a clock generation circuit section (22) for supplying a clock to the central processing unit section (21), and the multiplex protocol processing section (2
0) and an address translator (21) which translates the addresses of the blocks to be accessed by the central processing unit (21) so that each block can be accessed without error. 24) and switching each E1 frame of the first to fourth E1 framers and the line matching unit (28 to 31),
A channel for processing the protocol of each E1 frame is switched to the central processing unit (21), and an internal time division switch unit (25) for transmitting and receiving data through an external time division switch matching unit and an audio channel; A multi-channel HDLC processing unit (2) for extracting or synthesizing a channel for processing the HDLC protocol in each E1 frame of the time division switch unit (25) and transmitting the extracted channel to the central processing unit (21).
6), receiving a frame synchronization signal from an external time-division switch, the internal time-division switch section (25), and the first to fourth
An external time division switch, an external time division switch matching unit (27) that supplies a clock and a frame synchronization signal to the E1 framer and line matching unit (28 to 31), and matches each E1 trunk line and voice channel; Generate an E1 frame,
Split the received frame and send it as a bipolar signal level so that it can be transmitted over long distances on the E1 link.
And a 4E1 framer and a line matching unit (28 to 31).

As the central processing unit (21), a 32-bit MC68MH360 manufactured by Motorola can be used to control the execution of a program, access to each resource, and an interrupt generated from each resource. Take charge of function.

Further, the clock generation circuit (22) supplies a clock of 32.384 MHz to the central processing unit (21) as a clock used when the central processing unit (21) approaches each resource. Then, the central processing unit (21) approaches the internal time-division switch unit (25), or supplies a 20 MHz clock to the internal time-division switch unit (25) during the internal operation of the time-division switch, External time division switch matching part (27)
Receiving the 4.096 MHz clock and 8 KHz frame synchronization received from the external time-division switch of
It is supplied to the 4E1 framer and line matching unit (28-31).
Thus, the clock and frame synchronization signal received
The first to fourth E1 framers and line matching units (28 to 31) transmit and receive using E1 frames.

The memory unit (23) can be roughly divided into four. First, a ROM (Read Only Memory) has a size of 256 Kbytes and is used for execution. Second, the local memory can store debug program data that can confirm whether there is an abnormality in hardware resources, and thirdly, a dual port memory. When performing a protocol, communication is performed in the same hardware between the layers 1 and 2 and between the layers 2 and 3, the processing of the layer 3 is performed by other hardware. Fourth, there is a dual-port memory,
In order to perform communication between the host and the layer 2, a shared memory is provided as a buffer memory and a memory area for storing a program and data of an actual protocol.

Further, the address translator (24) is adapted to approach each memory unit (23) from the central processing unit (21), approach an internal time division switch (25), or the 4th
When approaching the E1 framer and line matching part (28-31)
Translate the address so that each resource can be approached without error.

The internal time-division switch unit (25)
A function of switching each E1 frame of the framer and line matching unit (28-31) and the highway of the external time-division switch matching unit (27), and extracting or combining a channel for processing the HDLC protocol in each E1 frame. Perform.

The channel for processing the protocol of each of the E1 frames is controlled by an internal time division switch (25) by a TDM (Time Division Multiplex) of the MC68MH360 of the central processing unit.
iple (time division multiplexing)) port, and the audio channel is transmitted and received by an external time division switch.

Further, the external time division switch matching section (27)
First, a 4.096 MHz clock and an 8 KHz frame synchronization signal are received from an external time division switch, and the internal time division switch unit (25), the first to fourth E1 framers and line matching units (28 to 31) are received. ) Supplies a clock and a frame synchronization signal, respectively, and secondly, has a function of performing matching with respect to an external time division switch, each E1 trunk line, and an audio channel.

The first to fourth E1 framers and line matching units (28 to 31) generate E1 frames, divide received frames, and transmit the E1 link over a long distance so that the E1 link can be transmitted over a long distance. Is transmitted as a sex signal level.

In this case, the MC68MH360 and the MC67360 are distinguished by whether the HDLC controller in the central processing unit (21) can be used based on time division. And the MC68MH
The 360 includes 64 HDLC controllers, including transmission and reception, and there are 32 channels in the E1 physical layer.

Therefore, to perform HDLC control for each channel, the MC68MH360 should be used. However, when the MC67360 is used, since only four controllers are used, the 32 channels of E1 are used. Cannot fully provide HDLC control functions for

Therefore, when supporting the ISDN PRI protocol, an HDLC that supports four E1s in hardware and supports only 16 channels of each E1 on the protocol
It is necessary to provide a controller. The four E1s are input / output to / from the internal time-division switch unit (25), and require a transmission / reception line for transmitting / receiving to / from the MC68MH360.

Therefore, when attempting to transmit ISDN PRI protocol data on the E1 line, first, the internal time-division switch unit (25) is controlled so that the first channel output from the MC68MH360 is the first channel. The internal time-division switch unit (25) is initialized so that the 16th channel of E1 and the second channel are switched to the 16th channel of the second E1, respectively.

However, the 16th channel of each E1 is MC68MH
When inputting to 360, it is performed in a direction opposite to the transmission path of E1 described above.

When data is transmitted and received in this manner, the MC68MH360 is controlled so that actual data is written to the shared memory.
At the time of initialization of the MC68MH360, the address of the shared memory is stored in a register called a buffer explanation device of the HDLC controller of the MC68MH360, thereby enabling actual transmission and reception of protocol data.

When supporting the V5.2 protocol,
Performed in a manner very similar to the ISDN PRI protocol, but because there are more channels available than the ISDN PRI protocol, when using the V5.2 protocol, the 16th channel of each E1 is similar to the ISDN PRI protocol. And the protocol data of the 15th and 31st channels used additionally are as follows.

First, the fifth channel of the time division port of the MC68MH360 is the first E1 of the internal time division switch unit (25).
The 15th channel of the 6th channel is the 15th channel of the second E1, the 7th channel is 3
The 15th channel of the 1st E1, the 8th channel is the 15th channel of the 4th E1, the 9th channel is the 31st channel of the 1st E1, the 10th channel is The internal time-division switch unit (25) is controlled at the time of initialization of the MC68MH360 so as to be switched to the 31st channel of the second E1, respectively.

As described above, in the physical layer of the V5.2 protocol, since three channels are used for each E1 and four E1s exist for each board, the time division port of the MC68MH360 has a maximum of 12 channels. Multi-channel HDLC processor
(26) will be used.

Further, when data is received through E1 of the V5.2 protocol, the data is transmitted through a process in the reverse direction at the time of transmission.

In addition, when supporting the No. 7 protocol, if a large number of channels are used, higher performance is required. Therefore, only 4 channels per board can be used and processed by a 32-bit MC68MH360. It processes only a large number of data.

When supporting the ISDN PRI or V5.2 protocol, a fixed channel is used.
In the case of the No. 7 protocol, at the request of the software, E1 and the channel number to be used are received from the software, and by controlling the internal time division switch, only up to four channels are used. No.7
A protocol can be provided.

Finally, when supporting the frame relay protocol, each channel of each E1 can be used as a data channel, and data can be transmitted using 6 channels or 31 channels as one unit. In this case, the MC68MH360 simply performs the function of executing the program, and the protocol data is actually transmitted to and received from the multi-channel HDLC processing unit (26), and communication with the shared memory is performed.

As described above, according to the present invention, the exchange can receive and process both the V5.2 protocol, the ISDN PRI protocol, the No. 7 protocol, and the frame relay protocol.

Further, the present invention is not limited to such an embodiment, and can be used in various forms without departing from the scope of the claims.

[0039]

As described above, in the multiplex protocol function device of the exchange according to the present invention, the V5.2 protocol, the ISDN PR
By implementing hardware that can be equipped with four protocols, I protocol, No. 7 protocol, and frame relay protocol, compared to the conventional system in which subsystems for each protocol were equipped with other hardware, respectively. One hardware can accept the E1 physical layer and four protocols, and only one subsystem realizes the processing capacity of five subsystems, which is advantageous in terms of system production cost competitiveness. There is an effect that is.

In addition, since four protocols can be supported by one hardware, there is an effect that the manpower and cost for research and development can be reduced as compared with a case where the hardware is implemented by separate hardware.

Further, there is an effect that the production cost can be reduced as compared with the case where the hardware is embodied separately.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a multi-protocol function device of an exchange according to the present invention.

FIG. 2 is a block diagram showing a multiplex protocol processing unit of FIG. 1;

FIG. 3 is a schematic configuration diagram showing a conventional exchange.

FIG. 4 is a table showing functions of No. 7, ISDN, V5.2, and frame relay protocol in a general physical layer.

[Explanation of symbols]

 10: Interconnection unit 20: Multiplex protocol processing unit 21: Central processing unit 22: Clock generation circuit unit 23: Memory unit 24: Address translation unit 25: Internal time division switch unit 26: Multi-channel HDLC processing unit 27: External Division switch matching unit 28-31: 1st-4th E1 framer and line matching unit 40: Subscriber matching unit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Roh Jiao-yu 470 Ansung-dong, Icheon-si, Gyeonggi-do, Republic of Korea

Claims (6)

[Claims] 1. An exchange, connected to a multi-protocol processing unit and a subscriber matching unit, adapted to match a subscriber so as to be able to connect to the multi-protocol, and connected to the inter-connecting unit. , E1 physical layer, No.7, V5.2,
ISDN PRI, a multiplexed protocol processing unit that performs a frame relay function, and performs an interface between the interconnection unit and a subscriber,
A subscriber matching unit for matching so that a subscriber can use the multiple protocol function. 2. The central processing unit controls the execution of a program of the multiple protocol processing unit, and controls an interrupt when approaching each internal block or when an interrupt occurs in each block. A clock generation circuit for supplying a clock to the central processing unit; a memory unit for storing data of the multiplex protocol processing unit; and an address of a block to which the central processing unit approaches. An address translator that enables each block to be accessed without error, and a channel for processing the protocol of each E1 frame by switching each E1 frame of the first to fourth E1 framers and the line matching unit, Switching to central processing unit, data transmission / reception through external time division switch matching unit and voice channel A multi-channel HDLC processing unit for extracting or synthesizing a channel for processing the HDLC protocol in each E1 frame of the internal time division switch unit and transmitting the extracted channel to the central processing unit unit; Receiving the frame synchronization signal from the external time division switch,
A clock and a frame synchronization signal are supplied to the internal time division switch unit and the first to fourth E1 framers and line matching units, respectively, and an external time division switch, an external time division matching each E1 trunk line and an audio channel. The switch matching unit generates an E1 frame, divides the received frame, and
First to fourth E1 framer and line matching unit transmitting as a bipolar signal level so that the link can be transmitted over a long distance,
The multiplex protocol function device for an exchange according to claim 1, characterized by comprising: 3. The central processing unit, when supporting the ISDN PRI protocol, includes an HDLC controller that supports four E1s and supports 16 channels of each E1 on the protocol. E1 controls the internal time-division switch unit to transmit ISDN PRI protocol data on the E1 line in preparation for input / output to the internal time-division switch unit, and outputs the data from the central processing unit. The first channel to be assigned is the 16th channel of the first E1,
The second channel initializes the internal time-division switch unit so as to be switched to the 16th channel of the second E1, respectively, and actual data at the time of transmission / reception is written to the shared memory area of the memory unit. 3. The multi-protocol function device for an exchange according to claim 2, wherein the multi-protocol function device is controlled so as to be controlled. 4. When the central processing unit supports the V5.2 protocol, the first channel output from the central processing unit is the 16th channel of the first E1, and the second channel is the second channel. The second channel is the 16th channel of the second E1, the fifth channel is the 15th channel of the first E1, the sixth channel is the 15th channel of the second E1, The third channel is the third E1
The 15th channel, the 8th channel, the 4th
The internal so that the 15th channel of E1, the ninth channel is switched to the 31st channel of the first E1, and the 10th channel is switched to the 31st channel of the second E1 respectively 3. The apparatus according to claim 2, wherein the time division switch is controlled. 5. The central processing unit, when supporting the No. 7 protocol, receives an E1 and a channel number to be used from software according to a request of the software, and controls an internal time-division switch. 3. The apparatus according to claim 2, wherein control is performed such that only a maximum of four channels are used. 6. The central processing unit, when supporting the frame relay protocol, uses each channel of each E1 as a data channel, and performs data transmission / reception using 6 channels or 31 channels as one unit. The multiplex protocol function device for an exchange according to claim 2, wherein the control is performed in the following manner.