CN101127577A - A device and method for using transmission monitoring information of dense wave division multiplexing device - Google Patents
A device and method for using transmission monitoring information of dense wave division multiplexing device Download PDFInfo
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- CN101127577A CN101127577A CN 200610089270 CN200610089270A CN101127577A CN 101127577 A CN101127577 A CN 101127577A CN 200610089270 CN200610089270 CN 200610089270 CN 200610089270 A CN200610089270 A CN 200610089270A CN 101127577 A CN101127577 A CN 101127577A
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Abstract
The utility model provides a device and method for transmitting monitoring information by means of DWDM (density wavelength division multiplexing) device; wherein, a protocol converting unit and a main TSIU (time slot interchange unit) are arranged in the input and the output websites. While working, the protocol converting unit of the input website captures the monitoring information from the acquisition equipment and converts the captured monitoring information into E1 time slot data, which are then transmitted to the main TSIU; the main TSIU selects a specific light path according to the transmission terminal website of the E1 time slot data and outputs the E1 time slot data to the output website through the transparent transmission channel of DWDM equipment. The main TSIU of the output website receives E1 time slot data from specific light paths, which are converted into monitoring information by the protocol converting unit and output to the monitoring equipment. The utility model fully utilizes the transparent user channels of DWDM equipment, without requiring any changes on the DWDM equipment , thus realizing the transparent transmission of monitoring information between the acquisition equipment and the monitoring equipment.
Description
Technical field
The method that the present invention introduced is applicable to the management for environment monitor information such as temperature of concentrating monitoring communication equipment unattended operation website by the transparent subscriber channel of DWDM (Dense Wavelength DivisionMultiplexing, dense wave division multipurpose) equipment.
Background technology
DWDM equipment generally is used for the long distance line transmission, and a lot of websites are positioned at the remote mountain areas, and these websites are had inconvenient traffic, and environment is abominable, the veneer of generally some reliability height only being installed all, not being needed complicated business to dispose, for example light amplification plate, relay plate etc.For reducing maintenance cost, these websites generally do not need to be not suitable for sending someone residing to safeguard that these websites are exactly so-called unattended operation website yet.
Environmental conditions such as the general temperature of unattended operation website, humidity are more abominable, although machine room generally all is equipped with devices such as air-conditioning, dehumidifying, but for guaranteeing contingency, still need to install some equipment and gather management for environment monitor information in real time, by DWDM equipment these information remotes are sent in the set of sites of Attended mode and monitor.Management for environment monitor information general data amount is very little, and collecting device and monitoring equipment may be provided by third party producer, data format may adopt the self-defining agreement of producer, way in the past is to adopt DWDM equipment webmaster to transmit management for environment monitor information, the shortcoming of this way be need be according to third party producer in collection terminal and monitoring side different, protocol conversion plate between watch-dog and the DWDM equipment is provided and develops corresponding software, cost is high and dumb.
Summary of the invention
For addressing the above problem, the objective of the invention is to propose a kind of apparatus and method of utilizing dense wave division multipurpose device transmission monitor message, to realize the monitoring of multi-site monitor message.
For achieving the above object, the present invention proposes a kind of device that utilizes the transparent channel transmission monitoring information of dense wave division multipurpose equipment, be arranged on the master control borad of input website of monitor message, be used for the monitor message that input website collecting device obtains is exported, or be arranged on the master control borad of output website, be used for described monitor message is downloaded to watch-dog, wherein, comprise:
One conversion unit of protocol is connected with described collecting device or watch-dog, is used for when being connected with described collecting device, receives the monitor message that described collecting device sends, and described monitor message is converted to E1 time slot data, is sent to main TSIU time slot interchange unit; When being connected with described watch-dog, receive E1 time slot data from described main TSIU time slot interchange unit, be converted to monitor message and be sent to described watch-dog;
One main TSIU time slot interchange unit is connected with described conversion unit of protocol, is used for according to the specific light path of described E1 time slot transfer of data point of destination point selection described E1 time slot data being exported when being arranged at the input website; When being arranged at output during website, receiving from the E1 time slot data of input website light path output and be forwarded to described conversion unit of protocol.
The device of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose equipment wherein, also comprises:
One from TSIU time slot interchange unit, be arranged at the input website or output website from monitor board, be connected with main TSIU time slot interchange unit on the described main supervisory panel by backboard E1 bus, be used for exporting described E1 time slot data according to the purpose website choice of location light path that described E1 time slot data send; Or receive from the E1 time slot data of other website light paths outputs and be forwarded to described main TSIU time slot interchange unit.
The device of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose, wherein, described main TSIU time slot interchange unit and comprise the input and output light path of two kinds of different directions from TSIU time slot interchange unit respectively.
The device of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose equipment, wherein, described conversion unit of protocol also comprises:
Serial ports is connected with collecting device or watch-dog, is used for when being connected with described collecting device, receives the monitor message of serial ports form from described collecting device; When being connected with described watch-dog, the serial ports form monitor message that described conversion unit of protocol conversion is generated exports described watch-dog to.
The device of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose equipment, wherein, described input website also comprises:
Multiplexer, be connected respectively with serial ports with described collecting device, be used for obtaining the monitor message that described input website receives from described serial ports, carry out the monitor message of described reception and the monitor message of described collecting device collection multiplexing, generate new monitor message, described new monitor message is sent to described conversion unit of protocol by described serial ports.
The device of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose equipment, wherein, described serial ports is specially two serial ports, all be connected with conversion unit of protocol with described multiplexer, a serial ports is used for the monitor message that described receiving station receives is sent to described multiplexer with the serial ports form, and another serial ports is used for the new monitor message of the multiplexing generation of described multiplexer is transferred to described main TSIU time slot interchange unit with the serial ports form; And/or
Be arranged on the output website, all be connected, be used for the monitor message that receives from the different light paths direction to described watch-dog transmission with described watch-dog.
For achieving the above object, the invention allows for a kind of method of utilizing the transparent channel transmission monitoring information of dense wave division multipurpose, wherein, may further comprise the steps:
The method of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose, wherein, described step 2 also comprises:
Described E1 time slot data are passed through the step that one or more intermediate stations are transmitted.
The method of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose wherein, when middle website has the monitor message of collection to transmit, specifically may further comprise the steps:
Step 91, the main TSIU time slot interchange unit of described intermediate stations receives described E1 time slot data from described specific optical path direction, and is converted to monitor message by the agreement crosspoint;
Step 92 is sent to multiplexer with described monitor message, and described multiplexer carries out the monitor message of the collecting device collection of described monitor message and described intermediate stations multiplexing, generates new monitor message, inputs to described conversion unit of protocol;
Step 93, described conversion unit of protocol is converted to new E1 time slot data with described new monitor message, and selects specific light path to export by described TSIU time slot interchange unit according to the transmission destination website.
The method of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose wherein, when middle website does not have monitor message to transmit, leads directly to processing to E1 time slot data, specifically comprises:
The main TSIU time slot interchange unit of described intermediate stations or receive described E1 time slot data from TSIU time slot interchange unit from specific optical path direction after, directly described E1 time slot data are exported to the step of next website from identical specific optical path direction;
After the main TSIU time slot interchange unit of described intermediate stations receives described E1 time slot data from specific optical path direction, described E1 time slot data are switched to the described step of exporting from the optical path direction of TSIU time slot interchange unit; And/or
Described intermediate stations receive described E1 time slot data from TSIU time slot interchange unit from specific optical path direction after, described E1 time slot data are switched to the step of the optical path direction output of described main TSIU time slot interchange unit.
The method of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose, wherein, when monitor message need specifically may further comprise the steps when selecting specific optical path direction to export next website to from TSIU time slot interchange unit:
Step 111, the conversion unit of protocol of input website is obtained monitor message from collecting device, described monitor message is converted to E1 time slot data, and transfers to main TSIU time slot interchange unit;
Step 112, described main TSIU time slot interchange unit directly with described E1 time slot data by by backboard E1 bus transfer to described from TSIU time slot interchange unit, described from the time slot unit according to described E1 time slot transfer of data purpose website, selects specific optical path direction to export.
The method of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose wherein, when E1 time slot data need be passed through from TSIU time slot interchange unit from the input website or export the serial ports output of website, specifically comprises:
Step 121 describedly receives described E1 time slot data from TSIU time slot interchange unit from specific optical path direction, with described E1 time slot data through backboard E1 bus transfer to main TSIU time slot interchange unit;
Step 122, described main TSIU time slot interchange unit directly is sent to the agreement crosspoint with described E1 time slot data, is converted to serial ports form monitor message and output by described agreement crosspoint.
The method of the above-mentioned transparent channel transmission monitoring information that utilizes dense wave division multipurpose wherein, also comprises:
The conversion unit of protocol of input website receives monitor message with the serial ports form from collecting device, and the serial data that receives is converted to the step of E1 time slot data; With
Output website conversion unit of protocol is converted to behind the serial data step by serial ports output with the E1 time slot data that receive.
The present invention make full use of that DWDM equipment 2M monitoring and controlling channels provides transparent subscriber channel, do not need DWDM equipment is made any modification, realizing the transparent transmission of monitor message between collecting device and monitoring equipment on the transmission equipment.
Description of drawings
Fig. 1 is the E1 frame structure of monitoring path;
Fig. 2 is a DWDM equipment chain network structure;
Fig. 3 is a DWDM equipment right-angled intersection network structure;
Fig. 4 is serial ports and main supervisory panel E1 time slot exchanges data schematic diagram;
Fig. 5 be serial ports with from monitor board E1 time slot exchanges data schematic diagram;
Fig. 6 is the straight-through schematic diagram of monitor board E1 time slot;
Fig. 7 is the E1 time slot exchanges data schematic diagram between the master and slave monitor board;
Fig. 8 is that right-angled intersection network configuration site information is concentrated the monitoring schematic diagram.
Embodiment
Describe the embodiment of the invention in detail below in conjunction with accompanying drawing.
Realize the point-to-point transparent transmission of monitor message by DWDM equipment 2M monitoring and controlling channels, the E1 multi-frame structure that the frame structure of monitoring and controlling channels adopts ITU-T G.704 to advise, as shown in Figure 1.Can distribute 8 bytes to be used for transparent subscriber channel in the frame structure at most.
DWDM equipment is supported the networking mode of chain and cross type structure, and schematic network structure is distinguished as shown in Figures 2 and 3, and in the chain network configuration, all only need join a main supervisory panel can realize bidirectional monitoring to each website.For the right-angled intersection network configuration, we can think the cross type of 2 chain structures, different is that the right-angled intersection website is except will joining main supervisory panel, also to join from monitor board, and to pass through the core bus swap data between the master and slave monitor board, could realize the monitoring of four direction, and a plurality of right-angled intersection websites can be set in one network, form a plurality of right-angled intersection network configurations, a chain that will link with main supervisory panel among the present invention is a main chain, with a chain that links from monitor board for from chain.
Monitor message is by after the serial ports input DWDM equipment, need exchange in the corresponding E1 time slot according to network management configuration by main supervisory panel, could transmit in DWDM monitoring of tools channel, the E1 timeslot number reportedly is passed to and reaches after the destination, exchanges to serial ports output by monitor board again and gets final product.On DWDM equipment, the backboard serial ports only has physically annexation with main supervisory panel, and the backboard serial ports is realized with need transmitting by main supervisory panel from communicating by letter of monitor board.For non-right-angled intersection website, the exchange schematic diagram between serial ports and the main supervisory panel E1 time slot as shown in Figure 4.
Fig. 4 is the structural representation of main supervisory panel.As shown in Figure 4, comprising: conversion unit of protocol 401 and main TSIU time slot interchange unit 402.The data that serial ports receives are at first imported conversion unit of protocol 401, through serial ports-＞the E1 protocol conversion after the input main supervisory panel main TSIU time slot interchange unit 402, then according to data purpose website choice of location A to or B export to light path, if from other website A to or B need road output under this website serial ports to the E1 data of light path input, the main TSIU time slot interchange unit 402 that then needs to dispose main supervisory panel exchanges to conversion unit of protocol 401 with corresponding E1 input signal, through being exported by the backboard serial ports after E1-＞serial port protocol conversion; For the right-angled intersection website,, then need carry out the E1 time gas exchange according to method shown in Figure 5 if serial data needs transparent transmission to arrive from the chain website.
Fig. 5 be serial ports with from monitor board E1 time slot exchanges data schematic diagram.As shown in Figure 5, the data that serial ports receives are at first through input conversion unit of protocol 401, through serial ports-＞exchange to the output of backboard E1 bus by the TSIU time slot interchange unit 402 of main supervisory panel after the E1 protocol conversion, the input of this signal from monitor board from TSIU time slot interchange unit 501, then according to purpose website choice of location from the A of monitor board to or B export to light path, if from monitor board A to or B need road output under the serial ports of right-angled intersection website to the E1 data of light path input, then need to dispose and from TSIU time slot interchange unit 501 corresponding E1 input signal is exchanged to the output of backboard E1 bus from monitor board, this signal exchanges to conversion unit of protocol 401 by the main TSIU time slot interchange unit 402 of main supervisory panel again, through being exported by the backboard serial ports after E1-＞serial port protocol conversion.
E1 time slot data may be transmitted through one or more intermediate stations before arriving the purpose website, and the monitor board of these websites will be done straight-through the processing for E1 time slot data, and as shown in Figure 6, Fig. 6 is the straight-through schematic diagram of monitor board E1 time slot.Monitor board A to or B to the E1 data of light path input by the monitor board TSIU time slot interchange unit be switched directly to A to or B get final product to light path output.If will carry out E1 time slot data forwarding between the master and slave chain, implementation as shown in Figure 7, the main chain data will be forwarded to from chain, exchange to backboard E1 bus by main supervisory panel master TSIU time slot interchange unit 402 earlier, are exchanged to from chain by the main TSIU time slot interchange unit 501 from monitor board and export.Will be forwarded to main chain from the chain data, earlier by 501 exchanging to backboard E1 bus from monitor board from TSIU time slot interchange unit, the main TSIU time slot interchange unit 402 by main supervisory panel exchanges to main chain output again.
Be example with a relatively complicated right-angled intersection network configuration below, come the method for labor site information centralized monitor.
Fig. 8 is the schematic diagram that right-angled intersection network configuration site information is concentrated monitoring.As shown in Figure 8, network configuration, have 9 websites, be numbered NE1～NE9 respectively, at first selected NE8 is as the centralized monitor website, and the two ends NE1 of main chain and NE9 are connected with collecting device 801 respectively as point of termination station, the serial ports 1 of other input websites is connected with multiplexer 802 respectively with serial ports 2, and multiplexer 802 is connected with collecting device 801.Output website NE8 is connected with watch-dog 803, and two serial ports of NE8 insert the serial ports 1 and the serial ports 2 of NE8 frame backboard respectively.Requirement can receive the site monitoring information that other any one websites send from NE8, NE1 and NE9 are set to point of termination station, initiate the continuous transmission of two-way monitor message from these two websites, the monitor message of NE1 is by serial ports 1 input, A is to serial ports 1 output of transparent transmission to NE2, with of serial ports 2 inputs of the multiplexing back of the monitor message of NE2 by NE2, A is to serial ports 2 outputs of transparent transmission to NE3, with of serial ports 1 input of the multiplexing back of the monitor message of NE3 by NE3, C is to serial ports 1 output of transparent transmission to NE4, with of serial ports 2 inputs of the multiplexing back of the monitor message of NE4 by NE4, D arrives NE5 (NE3 to transparent transmission, two websites of NE6 are transmitted for corresponding E1 time slot and are handled) serial ports 2 outputs, with of serial ports 1 input of the multiplexing back of the monitor message of NE5 by NE5, C is to serial ports 1 output of transparent transmission to NE6, with of serial ports 2 inputs of the multiplexing back of the monitor message of NE6 by NE6, the C of NE6 output is after the E1 signal arrives NE3, NE3 does not do road processing up and down, just A is to serial ports 2 outputs that are forwarded to NE7, with of serial ports 1 input of the multiplexing back of the monitor message of NE7 by NE7, A is to serial ports 2 outputs of transparent transmission to NE8, import centralized supervisory and control equi at last, one tunnel monitor message is transmitted end continuously, another road monitor message does not need continuous transmission, need only be from serial ports 2 inputs of NE9, B is to serial ports 2 outputs of transparent transmission to NE8, and the input centralized supervisory and control equi gets final product.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; being familiar with those of ordinary skill in the art ought can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (13)
1. device that utilizes the transparent channel transmission monitoring information of dense wave division multipurpose equipment, be arranged on the master control borad of input website of monitor message, be used for the monitor message that input website collecting device obtains is exported, or be arranged on the master control borad of output website, be used for described monitor message is downloaded to watch-dog, it is characterized in that, comprising:
One conversion unit of protocol is connected with described collecting device or watch-dog, is used for when being connected with described collecting device, receives the monitor message that described collecting device sends, and described monitor message is converted to E1 time slot data, is sent to main TSIU time slot interchange unit; When being connected with described watch-dog, receive E1 time slot data from described main TSIU time slot interchange unit, be converted to monitor message and be sent to described watch-dog;
One main TSIU time slot interchange unit is connected with described conversion unit of protocol, is used for according to the specific light path of described E1 time slot transfer of data point of destination point selection described E1 time slot data being exported when being arranged at the input website; When being arranged at output during website, receiving from the E1 time slot data of input website light path output and be forwarded to described conversion unit of protocol.
2. the device that utilizes the transparent channel transmission monitoring information of dense wave division multipurpose equipment according to claim 1 is characterized in that, also comprises:
One from TSIU time slot interchange unit, be arranged at the input website or output website from monitor board, be connected with main TSIU time slot interchange unit on the described main supervisory panel by backboard E1 bus, be used for exporting described E1 time slot data according to the purpose website choice of location light path that described E1 time slot data send; Or receive from the E1 time slot data of other website light paths outputs and be forwarded to described main TSIU time slot interchange unit.
3. the device that utilizes the transparent channel transmission monitoring information of dense wave division multipurpose according to claim 1 and 2 is characterized in that, described main TSIU time slot interchange unit and comprise the input and output light path of two kinds of different directions from TSIU time slot interchange unit respectively.
4. the device that utilizes the transparent channel transmission monitoring information of dense wave division multipurpose equipment according to claim 1 is characterized in that described conversion unit of protocol also comprises:
Serial ports is connected with collecting device or watch-dog, is used for when being connected with described collecting device, receives the monitor message of serial ports form from described collecting device; When being connected with described watch-dog, the serial ports form monitor message that described conversion unit of protocol conversion is generated exports described watch-dog to.
5. the device that utilizes the transparent channel transmission monitoring information of dense wave division multipurpose equipment according to claim 4 is characterized in that, described input website also comprises:
Multiplexer, be connected respectively with serial ports with described collecting device, be used for obtaining the monitor message that described input website receives from described serial ports, carry out the monitor message of described reception and the monitor message of described collecting device collection multiplexing, generate new monitor message, described new monitor message is sent to described conversion unit of protocol by described serial ports.
6. the device that utilizes the transparent channel transmission monitoring information of dense wave division multipurpose equipment according to claim 5, it is characterized in that, described serial ports is specially two serial ports, all be connected with conversion unit of protocol with described multiplexer, a serial ports is used for the monitor message that described receiving station receives is sent to described multiplexer with the serial ports form, and another serial ports is used for the new monitor message of the multiplexing generation of described multiplexer is transferred to described main TSIU time slot interchange unit with the serial ports form; And/or
Be arranged on the output website, all be connected, be used for the monitor message that receives from the different light paths direction to described watch-dog transmission with described watch-dog.
7. a method of utilizing the transparent channel transmission monitoring information of dense wave division multipurpose is characterized in that, may further comprise the steps:
Step 1, the conversion unit of protocol of input website is obtained monitor message from collecting device, and described monitor message is converted to E1 time slot data, and transmits described E1 time slot data to main TSIU time slot interchange unit;
Step 2, described main TSIU time slot interchange unit select specific light path to export described E1 time slot data to the output website according to the transmission destination website of described E1 time slot data;
Step 3, the main TSIU time slot interchange unit of output website receives described E1 time slot data from described specific light path, and after being converted to described monitor message by the agreement crosspoint, exports watch-dog to.
8. the method for utilizing the transparent channel transmission monitoring information of dense wave division multipurpose according to claim 7 is characterized in that described step 2 also comprises:
Described E1 time slot data are passed through the step that one or more intermediate stations are transmitted.
9. according to claim 7 or the 8 described methods of utilizing the transparent channel transmission monitoring information of dense wave division multipurpose, it is characterized in that, when middle website has the monitor message of collection to transmit, specifically may further comprise the steps:
Step 91, the main TSIU time slot interchange unit of described intermediate stations receives described E1 time slot data from described specific optical path direction, and is converted to monitor message by the agreement crosspoint;
Step 92 is sent to multiplexer with described monitor message, and described multiplexer carries out the monitor message of the collecting device collection of described monitor message and described intermediate stations multiplexing, generates new monitor message, inputs to described conversion unit of protocol;
Step 93, described conversion unit of protocol is converted to new E1 time slot data with described new monitor message, and selects specific light path to export by described TSIU time slot interchange unit according to the transmission destination website.
10. according to claim 7 or the 8 described methods of utilizing the transparent channel transmission monitoring information of dense wave division multipurpose, it is characterized in that, when middle website does not have monitor message to transmit, E1 time slot data led directly to processing, specifically comprise:
The main TSIU time slot interchange unit of described intermediate stations or receive described E1 time slot data from TSIU time slot interchange unit from specific optical path direction after, directly described E1 time slot data are exported to the step of next website from identical specific optical path direction;
After the main TSIU time slot interchange unit of described intermediate stations receives described E1 time slot data from specific optical path direction, described E1 time slot data are switched to the described step of exporting from the optical path direction of TSIU time slot interchange unit; And/or
Described intermediate stations receive described E1 time slot data from TSIU time slot interchange unit from specific optical path direction after, described E1 time slot data are switched to the step of the optical path direction output of described main TSIU time slot interchange unit.
11. according to claim 7 or the 8 described methods of utilizing the transparent channel transmission monitoring information of dense wave division multipurpose, it is characterized in that, when monitor message need specifically may further comprise the steps when selecting specific optical path direction to export next website to from TSIU time slot interchange unit:
Step 111, the conversion unit of protocol of input website is obtained monitor message from collecting device, described monitor message is converted to E1 time slot data, and transfers to main TSIU time slot interchange unit;
Step 112, described main TSIU time slot interchange unit directly with described E1 time slot data by by backboard E1 bus transfer to described from TSIU time slot interchange unit, described from the time slot unit according to described E1 time slot transfer of data purpose website, selects specific optical path direction to export.
12. according to claim 7 or the 8 described methods of utilizing the transparent channel transmission monitoring information of dense wave division multipurpose, it is characterized in that, when E1 time slot data need be passed through from TSIU time slot interchange unit from the input website or export the serial ports output of website, specifically comprise:
Step 121 describedly receives described E1 time slot data from TSIU time slot interchange unit from specific optical path direction, with described E1 time slot data through backboard E1 bus transfer to main TSIU time slot interchange unit;
Step 122, described main TSIU time slot interchange unit directly is sent to the agreement crosspoint with described E1 time slot data, is converted to serial ports form monitor message and output by described agreement crosspoint.
13. according to claim 7 or the 8 described methods of utilizing the transparent channel transmission monitoring information of dense wave division multipurpose, it is characterized in that, also comprise:
The conversion unit of protocol of input website receives monitor message with the serial ports form from collecting device, and the serial data that receives is converted to the step of E1 time slot data; With
Output website conversion unit of protocol is converted to behind the serial data step by serial ports output with the E1 time slot data that receive.
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| CN113452469A (en) * | 2021-06-18 | 2021-09-28 | 深圳恒通未来科技有限公司 | 100G incoherent DWDM optical transmission system |
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| CN1127234C (en) * | 1999-12-02 | 2003-11-05 | 深圳市中兴通讯股份有限公司 | Light monitoring channel equipment, system and implementation for wavelength division multiplexing light transmission system |
| CN100393014C (en) * | 2002-06-13 | 2008-06-04 | 中兴通讯股份有限公司 | Apparatus and method for implementing optical monitoring channel of dense wavelength division multiplex system |
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| CN113452469A (en) * | 2021-06-18 | 2021-09-28 | 深圳恒通未来科技有限公司 | 100G incoherent DWDM optical transmission system |
| CN113452469B (en) * | 2021-06-18 | 2022-08-05 | 深圳恒通未来科技有限公司 | 100G incoherent DWDM optical transmission system |
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