KR100237874B1 - Access apparatus of optical subscriber transmission system - Google Patents

Abstract

The present invention relates to an existing operation system connection device of an optical subscriber transmission system having a point-to-point, linear and ring structure, which is installed and operated in a subscriber network, and in particular, is connected to a dedicated line centralized operation preservation system as well as a subscriber line centralized operation preservation system. Thus, the present invention relates to a device that enables uninterrupted maintenance of general subscriber lines and leased lines.

Description

Connection system of existing operation system of optical subscriber transmission system

The present invention relates to an existing operation system connection device (hereinafter referred to as COIU) of an optical subscriber transmission system (hereinafter referred to as FLC) installed in a subscriber network and having a point-to-point, linear and ring structure, and in particular, a subscriber line centralized operation preservation system (hereinafter referred to as SLMOS). Uninterrupted maintenance of subscriber line and leased line is possible by connecting with dedicated line centralized operation preservation system (LEL: Subscriber Line Maintenance & Operation System / Line Condition Report) as well as dedicated line maintenance & operation system (DELMONS). It is about a device to make it.

Existing general telephone subscribers and dedicated line subscribers are directly connected to the telephone company's switchboard and digital distribution system (DCS: Digital Cross-connect System), and in the case of general telephone lines, centralized telephone lines are remotely centralized in an operating system called SLMOS / LCR. It automatically handles the reception and testing of telephone breakdown reports, and SLMOS / LCR test equipment should be installed in the country for analog test of subscriber line. In case of leased line, the test system for each section is processed by centralizing the leased line in the operation system called DELMONS to determine the fault section. For this purpose, a test device for each line such as voice and data is required. Recently, as the needs of subscriber services have shifted from voice services to more diverse and high-speed broadband services, a new concept of subscriber optical transmission equipment is needed to accommodate these services. This device is installed in the subscriber network and accommodates private lines as well as general telephone lines. Therefore, for the uninterrupted maintenance of the line and the consistent operation system, the circuits accommodated in these optical transmission devices should be centralized under the existing SLMOS / LCR and DELMONS management to enable circuit testing. However, these optical transmission devices are composed of a mother station device (COT: Central Office Terminal) located at the telephone station side and a local station (RT: Remote Terminal) located at the subscriber side. Not applicable In addition, in order to centralize the lines accommodated in the optical transmission apparatus in these operating systems, there is a practical difficulty in that the test apparatus for each line must be installed for each of the COT and the RT.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to connect with a dedicated line centralized operation preservation system as well as a subscriber line centralized operation preservation system to provide uninterrupted maintenance for general subscriber lines and dedicated lines. It is to provide an existing operation system connection device of the optical subscriber transmission system.

1 is a block diagram showing the basic configuration of the optical subscriber transmission system and the existing operating system connection apparatus according to an embodiment of the present invention.

2 is a block diagram showing interconnections within the optical subscriber transmission system of the present invention.

3 is a block diagram of an existing operation system connection apparatus used in the present invention.

* Explanation of symbols for main parts of the drawings

11: mother station (COT: Central Office Terminal)

12: Local station (RT: Remote Terminal)

13: Subscriber line centralized operation preservation system (SLMOS / LCR)

14: Dedicated line intensive operation preservation system (DELMONS)

15: COIU

21: common part 22: mother station device operation unit

23: local station operation unit 24: channel unit

31: central processing unit 32: SLMOS / LCR interface

33: DELMONS interface unit 34: IPC interface unit

35: timer 36: DC / DC converter

37: memory

In order to achieve the above object, the existing operation system connection device of the present invention has an operation unit in the optical subscriber transmission system, the existing operation system connection device in the mother station apparatus in the operating unit, and the test module in the operation unit in the own station apparatus, the general subscriber line In case of SLMOS / LCR and dedicated line, it is connected to DELMONS, receives test commands from these operating systems, performs the test, and then transfers the test results back to the operating system.

In order to achieve the above object, the existing operating system connection device of the present invention receives the SLMOS / LCR command in the form of ASCII data input through RS232C, converts it into a unique command code, and transfers it to the central processing unit. The SLMOS / LCR interface unit receives the result of the command from the register and converts it into ASCII data of the promised output form, and then transfers the SLMOS / LCR at a transmission rate of 1200bps, and the TL1 interpreter for processing the DELMONS command input / output through RS232C. Built-in function converts TL1 command of ASCII data into internal command code when receiving and transfers it to central processing unit, and converts data from central processing unit to TL1 message and transmits to DELMONS at 1200bps transmission speed. Central processing of commands received from the DELMONS interface unit and the SLMOS / LCR interface unit or the DELMONS interface unit Under the control of the tooth part, the IPC interface part performs the function of transmitting to the main process module of the common part and vice versa to the SLMOS / LCR interface part or the DELMONS interface part, and the module as a real time clock. The timer unit is used for transmission rate control and scheduling, and a DC / DC converter for supplying power to the unit by receiving -48V and GND signals and outputting 5V and GND.

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

1 is a block diagram showing the basic configuration of the FLC and COIU according to the present invention. FLC has a mother station located at a telephone station and a local station located at a large-sized building on the subscriber side. It is a device that transmits light between COT and RT by accommodating. In addition, for efficient network operation, it is used when the subscriber buildings are separated from each other and it is difficult to configure the network in connection with other buildings, or when the transmission capacity of the subscriber buildings is close to STM-1 (155Mbps) and other RTs cannot be placed. Point-to-point configuration, the transmission capacity of RTs connected to COT is small, and it is a device that can be configured in various networks such as linear or annular which can be installed even in areas where small-capacity buildings are scattered. As shown in Fig. 1, subscribers connected to RT (general line, leased line) are connected to the exchange or line distribution device of the company directly without COT and RT in the existing operating environment. DELMONS's test device directly tested the fault line, but the same test method cannot be applied to the subscriber through the optical transmission device such as FLC. In order to do this, the SLMOS / LCR (14) should be equipped with SLMOS / LCR test equipment in the RT subscriber building. Also, in the linear (B) or annular (C) network structure, a large number of RTs (up to 16) are installed. As a result, these test devices should be installed at every RT. In case of DELMONS (13), since there are separate test devices for each line such as voice level and data level, several DELMONS test devices should be installed for each RT. In order to solve this problem, in the present invention, the COIU device 15 in the operation unit of the COT 11 is connected to the existing operation system. In other words, when the existing operation system gives a test order for a specific subscriber line through the COIU, the FLC performs the test on the corresponding line and sends the test result of the specified type to these operating systems. FLC has a built-in tester that can test regular telephones and leased lines in the RT operation section to perform the tests on the line.

2 is a block diagram illustrating the interconnection within the FLC of the present invention, which basically consists of a common part, an operating part and a channel part. The operating unit's COIU device is mounted only in the COT to provide the interface function to centralize subscriber lines connected to multiple RTs in SLMOS / LCR and DELMONS. In other words, when a test command is received from SLMOS / LCR and DELMONS, it is converted into an FLC internal command and transmitted to the common part through IPC (Inter Processor Communication) between the common part and the operating part, and the common part is a DCC which is a data communication channel in 155Mbps synchronous signal overhead. It is delivered to RT through Data Communication Channel. The RT common part transmits the test line information to the channel part and the operation part through IPC, and the test module in the operation part connects to the subscriber access part through the test bus and performs the test on the corresponding line. The measurement result is transmitted again through DCC between COT and RT, and the COIU converts the result into message type required by SLMOS / LCR or DSLMONS. As shown in FIG. 1, DN (Directory Number: subscriber number) when connecting with SLMOS / LCR and AID (Access) when connecting with SLMOS / LCR to accurately distinguish the test line connected to each RT in linear or annular structure as shown in FIG. Identifier) In order to connect with these operating systems, serial interfaces with electrical characteristics of RS232C are provided on the rear panel of the operation unit, and data is exchanged at a transmission rate of 1200bps. The data format used is defined as ASCII for SLMOS / LCR and TL1 (Tranaction Language-1) format for DELMONS.

3 is a block diagram of the COIU device 15 used in FIG. Basically, the CPU 31, the memory 37, the SLMOS / LCR interface 32, the DELMONS interface 33, the IPC interface 34, the timer 35 and the DC / DC converter 36 7 blocks). The central processing unit 31 controls all peripheral devices in the COIU, and the SLMOS / LCR interface unit 32 receives the SLMOS / LCR commands in the form of ASCII data input through RS232C, converts them into unique command codes, It transfers the result of the command from the central processing unit to the processing unit, converts it into ASCII data of the promised output form, and delivers it to the SLMOS / LCR at a transmission speed of 1200bps. The DELMONS interface unit 33 has a built-in TL1 interpreter function for processing DELMONS commands inputted and outputted through RS232C.When received, the DELMONS interface unit converts the TL1 command of ASCII data into an internal unique command code, and transmits it to the central processing unit. The data from the central control unit is converted into TL1 message and transmitted at the transmission speed of DELMONSFH 1200bps. The IPC interface unit 34 transmits the command received from the SLMOS / LCR interface unit 32 or the DELMONS interface unit 33 to the main control unit of the common unit under the control of the central processing unit unit, and conversely, the SLMOS receives the result received from the main control unit. It performs the function of transmitting to the / LCR interface unit 32 or the DELMONS interface unit 33. The timer unit 35 is a real time clock and is used for transmission rate control and scheduling between modules. Finally, the DC / DC converter 36 receives the -48V and the GND signals and outputs the 5V and the GND to provide power to the unit.

If the existing operation system connection apparatus of the present invention described above is used, it is possible to manage the general line accommodated in the optical transmission apparatus such as FLC and the voice level and data dedicated line of DS0 level (64bps) in the existing operation system. It is effective in constructing a maintenance system, and it is also very effective in overcoming the limitation of applying existing line measuring method to the line section and providing an efficient maintenance structure that can be tested for subscriber lines in various network structures.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the scope of the claims below You will have to look.

Claims (6)

In the existing operating system connection device of the optical subscriber transmission system, the operation unit in the optical subscriber transmission system, the existing operation system connection device in the mother station apparatus, the test module in the operation unit in the own station, and the SLMOS in the general subscriber line. / LCR and the dedicated line is connected to the DELMONS connected to the existing operating system of the optical subscriber transmission system, characterized in that after receiving the test command from these operating system to perform the test and transfer the test results back to the operating system. The apparatus of claim 1, wherein the operating unit has a connection terminal on a rear panel of the operating unit so as to be connected to the SLMOS / LCR and the DELMONS. 2. The optical subscriber according to claim 1, wherein the subscriber station is composed of at least two and the common unit is connected to a DCC channel of a synchronous signal so that maintenance of a general subscriber line or a dedicated line accommodated by each station device is possible. Existing operating system connection device of transmission system. 2. The general subscriber circuit or dedicated circuit according to claim 1, wherein the at least two own station apparatuses are constituted and connected to each other by a DCC channel of a synchronous signal in an annular structure with the common part of the master station apparatus. Connection system of existing operation system of optical subscriber transmission system to enable maintenance of The apparatus of claim 1, wherein the transmission speed is 1200bps when connected to the SLMOS / LCR or DELMONS. In the existing operating system access device of the optical subscriber transmission system, the SLMOS / LCR command in the form of ASCII data input through RS232C is received, converted into a unique command code, transferred to the central processing unit, and the command from the central processing unit. Built-in SLMOS / LCR interface unit that transfers the result of ASCII data of the promised output type to the SLMOS / LCR at 1200bps transmission rate, and TL1 interpreter function to process DELMONS command input / output through RS232C. DELMONS converts TL1 command of ASCII data into internal command code at the time of reception, transfers it to central processing unit, converts data from central processing unit to TL1 message at transmission, and transmits to DELMONS at transmission speed of 1200bps. Command received from the interface unit and the SLMOS / LCR interface unit or the DELMONS interface unit; The IPC interface unit performs the function of transmitting to the main process module of the common part and vice versa to the SLMOS / LCR interface or the DELMONS interface unit, and the transfer speed between modules as a real time clock. Connection to the existing operating system of the optical subscriber transmission system comprising a timer unit used for control and scheduling, and a DC / DC converter which receives -48V and GND signals and outputs 5V and GND to supply power to the unit. Device.

Images