CN101742367A - Optical network unit equipment - Google Patents
Optical network unit equipment Download PDFInfo
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- CN101742367A CN101742367A CN200910243469A CN200910243469A CN101742367A CN 101742367 A CN101742367 A CN 101742367A CN 200910243469 A CN200910243469 A CN 200910243469A CN 200910243469 A CN200910243469 A CN 200910243469A CN 101742367 A CN101742367 A CN 101742367A
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Abstract
The invention discloses optical network unit equipment, which comprises a first power conversion unit, a second power conversion unit, a swinging cross unit and an ONU, wherein the first power conversion unit is electrically connected with an external AC power supply to convert an inputted AC voltage signal into an operating voltage needed by the ONU and then to output the operating voltage to the ONU; the second power conversion unit is used for inputting the AC voltage signal from the input end of the external AC power supply, converting the AC voltage signal into the operating voltage needed by the ONU and outputting the operating voltage to the swinging cross unit; the swinging cross unit is used for receiving an operating voltage signal which is outputted by the second power conversion unit and is needed by the ONU, loading the operating voltage signal on a pair of stranded wires which are arranged redundantly in an Ethernet cable and outputting the operating voltage signal to the ONU with a data signal from a user; and the ONU is used for receiving a signal transmitted by the swinging cross unit through the Ethernet cable to separate the operating voltage signal needed by the ONU, and receiving the operating voltage which is inputted by the first power conversion unit and needed by the ONU and selecting a direct-current voltage needed by one path of ONU to supply power to each module in the ONU. By applying the optical network unit equipment, the power supply flexibility and safe power distribution reliability can be improved.
Description
Technical field
The present invention relates to the optical-fiber network power supply technique, particularly a kind of device of optical network unit.
Background technology
Along with the paces of the integration of three networks are accelerated, the effect of network terminal EPON (PON, Passive OpticalNetwork) in optical access network is also more and more important.Along with user's requirement more and more higher to service bandwidth, quality of service, the PON node also moves down gradually, had both at home and abroad at present operator in deployed fiber to family (FTTH, Fiber To The Home) technical scheme, be that optical fiber is registered one's residence, in order to multiple business and service to be provided.The PON system is made up of optical network unit (ONU, Optical NetworkUnit), optical line terminal (OLT, Optical Line Terminal), optical distribution (ODN, OpticalDistribution Network).
In the FTTH technical scheme, ONU is placed on user's family, and the first line of a couplet optical interface of business interfaces such as user's voice, data and video and PON can be provided.
ONU at work, need external power source, in the prior art, power supply for ONU, the mode of general present employing ONU power supplied locally, power conversion unit promptly is set outside ONU, power conversion unit is connected with mains supply, by power conversion unit with alternating current (AC, AlternatingCurrent)/alternating voltage (AV, Alternating Voltage) line voltage of 220V is transformed to the required direct current (DC of ONU, Direct current) operating voltage, for example, DC 5V or DC 12V etc., DC operating voltage with its conversion flows to ONU again, and ONU is provided operating voltage.
Fig. 1 is the structural representation of existing ONU and external power conversion unit.In below describing, the ONU of external power supply converter unit is referred to as ONU equipment, referring to Fig. 1, this ONU equipment comprises: ONU and power conversion unit, wherein, ONU comprises ustomer premises access equipment (CPE, CustomerPremises Equipment) module, power devices module and Ethernet transformer module again
Power conversion unit is used for being electrically connected with civil power, and the civil power of input is transformed to the operating voltage of ONU, exports the power devices module to;
The power devices module is used for the ONU operating voltage of input is transformed to the required voltage of CPE module, exports the CPE module to;
In ONU, may comprise a plurality of CPE modules, the required voltage of each CPE module work may be different, and the power devices module is according to the CPE module that is connected with self, the ONU operating voltage is transformed to the required voltage of this CPE module, and exports this CPE module to.
The CPE module, the voltage that is used for providing according to the power devices module carries out the processing of data-signal and the processing of procotol, is connected with local side apparatus;
The Ethernet transformer module, receive the data-signal of external communication device output by ethernet line, carry out analog-to-digital conversion (ADC, Analogue to Digital Converter) and rectification and isolation, export the CPE module to and handle, the data-signal after the reception CPE resume module carries out digital-to-analogue conversion (DAC, Digital to Analogue Converter) and the modulation with the isolation, export external communication device to.
External communication device comprises user side equipment, for example personal computer (PC, PersonalComputer) etc., and network equipment.For instance, data interaction for user and network, the user exports data to the Ethernet transformer module by Ethernet, the Ethernet transformer module carries out analog-to-digital conversion, export the CPE module to and handle, after the CPE resume module, export the Ethernet transformer module to, the Ethernet transformer module carries out digital-to-analogue conversion, exports network equipment to.
In the prior art, for the register one's residence ONU equipment of mode of above-mentioned employing optical fiber, generally adopt two kinds to lay mode, a kind of is that direct cloth is placed on user study desktop, the i.e. mode of power supplied locally; Another kind is that cloth is placed in the light current case that the user reserves within the walls, i.e. the mode of remote power feeding.For the situation that lays at user study desktop, ONU equipment can directly obtain supply power voltage from AC 220V, and AC 220V voltage signal is exported to each CPE module for power supply among the ONU by power conversion unit; And the situation of putting for the light current case lining of reserving within the walls the user, often because do not have AC 220V power supply in this light current case, need be connected to power conversion unit by the AC 220V power supply that power line is located study desktop etc., cause trouble for the ONU power devices, the power supply flexibility is low, can not adapt to different applied environments; Simultaneously, the mode of employing power line also is easy to generate potential safety hazard, the safe power supply reliability is lower.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of device of optical network unit, improves power supply flexibility and safe power supply reliability.
For achieving the above object, device of optical network unit provided by the invention comprises: ONU, first power conversion unit, second source converter unit and swinging cross unit, wherein,
First power conversion unit is used for being electrically connected with outside AC power supplies, and the AC voltage signal of importing is transformed to the required operating voltage of ONU, exports ONU to;
The second source converter unit is used for the AC power supplies input input AC voltage signal from the outside, is transformed to the required operating voltage of ONU, exports the swinging cross unit to;
The swinging cross unit is used to receive the required operating voltage signal of ONU that the second source converter unit is exported, and is carried on the twisted pair wire of redundant configuration in the ethernet line, with exporting ONU to from users'data signals;
ONU, be used to receive the signal of swinging cross unit, isolate the required operating voltage signal of ONU by the ethernet line transmission, and the required operating voltage of ONU that receives the input of first power conversion unit, select the required direct voltage of one road ONU, give each module for power supply among the ONU.
Described ONU comprises CPE module, power devices module, Ethernet transformer module, feed extraction module and power supply selection module, wherein,
The feed extraction module, be used for according to predefined separation strategy, from the ethernet line of swinging cross unit output, isolate d. c. voltage signal and data-signal, export d. c. voltage signal to power supply and select module, export data-signal to the Ethernet transformer module;
The Ethernet transformer module receives the data-signal that the feed extraction module is exported by ethernet line, carries out the rectification and the isolation of data, exporting the CPE module to handles, receive the data after the CPE resume module, modulate and isolate, export outside network equipment to;
Power supply is selected module, be used to receive the feed extraction module and/or, the d. c. voltage signal of first power conversion unit output is selected the required direct voltage of one road ONU, exports the power devices module to;
The power devices module, the required dc voltage conversion of ONU that is used for input is the required voltage of CPE module, exports the CPE module to;
The CPE module, the voltage that is used for providing according to the power devices module carries out the processing of data-signal and the processing of procotol, is connected with local side apparatus.
Described predefined separation strategy is: the twisted pair wire that is used to carry d. c. voltage signal according to setting in advance in the redundant configuration, extract d. c. voltage signal from the twisted wire of this carrying d. c. voltage signal that sets in advance.
Described feed extraction module be further used for to isolated d. c. voltage signal carry out circuit go disturb to handle.
Described feed extraction module is further used for receiving the data-signal of Ethernet transformer module output, exports the swinging cross unit to;
The swinging cross unit receives the self feeding extraction module by the ethernet line data signals transmitted, exports user communication device to.
Described swinging cross unit links to each other by the RJ45 interface with the feed extraction module, links to each other by the RJ45 interface with user communication device, links to each other by the DC power supply interface with the AC power supplies input.
Commutator and complementary metal oxide semiconductors (CMOS) CMOS that described power supply is selected module to comprise and had controlled function manage switch.
Described switch
The feed extraction module has direct voltage and first power conversion unit does not have direct voltage detecting, conducting feed extraction module and power devices module;
First power conversion unit has direct voltage and the feed extraction module does not have direct voltage detecting, conducting first power conversion unit and power devices module;
Detecting first power conversion unit and the feed extraction module all has direct voltage, according to conducting strategy conducting first power conversion unit that sets in advance and power devices module or, conducting feed extraction module and power devices module.
The described conducting strategy that sets in advance is: the stability of the d. c. voltage signal that first power conversion unit that obtains according to detection and feed extraction module provide, select stability preferably d. c. voltage signal export the power devices module to.
The required operating voltage of described ONU is 5V or 12V.
As seen from the above technical solution, the device of optical network unit of the embodiment of the invention, comprise: ONU, first power conversion unit, second source converter unit and swinging cross unit, wherein, first power conversion unit, be used for being electrically connected, the AC voltage signal of importing is transformed to the required operating voltage of ONU, export ONU to outside AC power supplies; The second source converter unit is used for the AC power supplies input input AC voltage signal from the outside, is transformed to the required operating voltage of ONU, exports the swinging cross unit to; The swinging cross unit is used to receive the required operating voltage signal of ONU that the second source converter unit is exported, and is carried on the twisted pair wire of redundant configuration in the ethernet line, with exporting ONU to from users'data signals; ONU, be used to receive the signal of swinging cross unit, isolate the required operating voltage signal of ONU by the ethernet line transmission, and the required operating voltage of ONU that receives the input of first power conversion unit, select the required direct voltage of one road ONU, give each module for power supply among the ONU.Like this, can satisfy power supplied locally and remote power feeding demand simultaneously, improved power supply flexibility and safe power supply reliability, reduced ONU equipment the power supply difficulty, provide cost savings.
Description of drawings
Fig. 1 is the structural representation of existing ONU and external power conversion unit.
Fig. 2 is an embodiment of the invention device of optical network unit structural representation.
Fig. 3 is the device of optical network unit structural representation of embodiment of the invention power supplied locally.
Fig. 4 is the device of optical network unit structural representation of embodiment of the invention remote power feeding.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
In the practical application, for the ethernet line in the ONU equipment, it is used for data mutual between transmission user and the network, if ONU equipment cloth is placed in the light current case that the user reserves within the walls, then the ethernet line in the ONU equipment links to each other with user study desktop communication equipment such as PC by the passage that sets in advance within the walls, thereby, in the embodiment of the invention, consider utilizing be the passage of netting twine reservation too within the walls, like this, can improve the reliability of safe power supply.
Further, consider the operating characteristic of existing ethernet line: the existing Ethernet line generally has four twisted pair wires, wherein, transmission of data signals has only used two twisted pair wires wherein, other two twisted pair wires are as redundant configuration, thereby, in the embodiment of the invention, consider that cloth is placed on ONU equipment and the user side communication apparatus communication that needs communicate by letter in the light current case that the user reserves within the walls apart from shorter, the probability that communication failure all takes place for the two pairs of twisted-pair feeders is minimum, utilizes a pair of twisted-pair feeder of ethernet line redundant configuration that remote power feeding is provided, like this, not only improve the flexibility of power supply, also improved the reliability of safe power supply simultaneously.
Fig. 2 is an embodiment of the invention device of optical network unit structural representation.Referring to Fig. 2, this device of optical network unit comprises: ONU, first power conversion unit, second source converter unit and swinging cross unit,
Power conversion unit structure among first power conversion unit and Fig. 1, function are identical.
First power conversion unit is used for being electrically connected with AC power supplies, is the required operating voltage of ONU with the AC voltage transformation of importing, and exports ONU to;
The second source converter unit is used for the AC power supplies input input AC voltage signal from the outside, is transformed to the required operating voltage of ONU, exports the swinging cross unit to;
The swinging cross unit is used to receive the required operating voltage signal of ONU that the second source converter unit is exported, and is carried on the twisted pair wire of redundant configuration in the ethernet line, with exporting ONU to from users'data signals;
ONU, be used to receive the signal of swinging cross unit, isolate the required operating voltage signal of ONU by the ethernet line transmission, and the required operating voltage of ONU that receives the input of first power conversion unit, select the required direct voltage of one road ONU, give each module for power supply among the ONU.
Wherein, ONU comprises CPE module, power devices module, Ethernet transformer module, feed extraction module and power supply selection module, wherein, Ethernet transformer module, power devices module and CPE module are identical with structure, the function of Ethernet transformer module, power devices module and CPE module among Fig. 1 respectively, different with Fig. 1 is that variation has taken place its annexation.Be specifically described below.
First power conversion unit is used for being electrically connected with AC power supplies, is the operating voltage of ONU with the AC voltage transformation of importing, and exports power supply to and selects module;
The second source converter unit is used for the AC power supplies input input AC voltage signal from the outside, is transformed to the operating voltage of ONU, exports the swinging cross unit to;
In the practical application, the operating voltage of ONU is generally 12V or 5V.
Certainly, first power conversion unit and second source converter unit can be same physical location.
The swinging cross unit is used to receive the d. c. voltage signal that the second source converter unit is exported, and is carried on the twisted pair wire of redundant configuration in the ethernet line, with export the feed extraction module to from users'data signals;
In the present embodiment, the swinging cross unit also is used for receiving the self feeding extraction module by the ethernet line data signals transmitted, exports user communication device to.
In the practical application, ethernet line can be category-5 cable, d. c. voltage signal is mixed the back to be transmitted in same category-5 cable with the Ethernet data signal, a side that links to each other with the feed extraction module is the RJ45 interface, a side that links to each other with user PC equipment is the RJ45 interface, and what link to each other with the AC power supplies input is the DC power supply interface.
The feed extraction module is used for isolating d. c. voltage signal and data-signal according to predefined separation strategy from ethernet line, exports d. c. voltage signal to power supply and selects module, exports data-signal to the Ethernet transformer module;
Predefined separation strategy can be according to a twisted pair wire that is used to carry d. c. voltage signal that sets in advance in the redundant configuration, extracts d. c. voltage signal from the twisted wire of this carrying d. c. voltage signal that sets in advance.
In the present embodiment, the feed extraction module also is used to receive the data-signal of Ethernet transformer module output, exports the swinging cross unit to.Just say that also for the signal flow that is sent to user communication device, transparent transmission is carried out in feed extraction module and swinging cross unit.
The feed extraction module also is further used for going to disturb the performance of processing with further raising main flow voltage to what isolated d. c. voltage signal carried out circuit.
The Ethernet transformer module receives the data-signal that the feed extraction module is exported by ethernet line, carries out the rectification and the isolation of data, exporting the CPE module to handles, receive the data after the CPE resume module, modulate and isolate, export network equipment to;
Power supply is selected module, be used to receive the feed extraction module and/or, the d. c. voltage signal of first power conversion unit output is selected the required direct voltage of one road ONU, exports the power devices module to;
In the practical application, it can be commutator, the complementary metal oxide semiconductors (CMOS) (CMOS that has controlled function that power supply is selected module, Complementary Metal Oxide Semiconductor) pipe switch or other switches, the feed extraction module has direct voltage and first power conversion unit does not have direct voltage detecting, conducting feed extraction module and power devices module; First power conversion unit has direct voltage and the feed extraction module does not have direct voltage detecting, conducting first power conversion unit and power devices module; Detecting first power conversion unit and the feed extraction module all has direct voltage, according to conducting strategy conducting first power conversion unit that sets in advance and power devices module or, conducting feed extraction module and power devices module.
The conducting strategy that sets in advance can be the stability of the direct voltage that provides of first power conversion unit that obtains according to detection and feed extraction module, select stability preferably voltage export the power devices module to.Certainly, also can be according to the other technologies index, for example.Scope range of the fluctuation of voltage is judged voltage, and selection performance voltage preferably exports the power devices module to.
In the foregoing description, detect whether have the stability of direct voltage and judgement and comparison direct voltage, belong to prior art, specifically can not repeat them here referring to the correlation technique document.
The power devices module is used for the ONU operating voltage of input is transformed to the required voltage of CPE module, exports the CPE module to;
The CPE module, the voltage that is used for providing according to the power devices module carries out the processing of data-signal and the processing of procotol, is connected with local side apparatus.
Fig. 3 is the device of optical network unit structural representation of embodiment of the invention power supplied locally.Referring to Fig. 3, AC power supplies exports first power conversion unit to, after first power conversion unit is transformed to d. c. voltage signal, exports power supply to and select module, and the feed extraction module is by the data-signal of communication equipments such as ethernet line reception user PC.
Fig. 4 is the device of optical network unit structural representation of embodiment of the invention remote power feeding.Referring to Fig. 4, selecting module to carry out this locality with power supply links to each other, select the direct voltage input signal end of module unsettled the input power supply, long-range AC power supplies exports the second source converter unit to, after the second source converter unit is transformed to d. c. voltage signal, export the swinging cross unit to, the swinging cross unit mixes the back with d. c. voltage signal to be transmitted in same category-5 cable with the Ethernet data signal, being about to d. c. voltage signal is carried in the twisted wire of redundant configuration in the ethernet line, export the feed extraction module to, the feed extraction module from ethernet line, isolate d. c. voltage signal and carry out circuit go export power supply to after disturb handling and select module.
By as seen above-mentioned, the device of optical network unit that the embodiment of the invention provides, by the swinging cross unit is set, feed extraction module and power supply are selected module, the swinging cross unit is carried on the d. c. voltage signal of power conversion unit output on one twisted pair wire of redundant configuration in the ethernet line, transfer to the feed extraction module, the feed extraction module is isolated d. c. voltage signal from ethernet line after, exporting power supply to selects module that remote power feeding is provided, power supply selects module to judge the voltage of feed extraction module output and the d. c. voltage signal of directly importing from this locality, selects one road d. c. voltage signal.Like this, this ONU equipment can satisfy power supplied locally and remote power feeding demand simultaneously, and the user can be according to the condition of actual physics environment, when inconvenient power supplied locally, can select remote power feeding, improve the power supply flexibility, reduce the power supply difficulty of ONU equipment; Simultaneously, the ethernet line of passage carries out remote power feeding by being reserved with within the walls, has improved the safe power supply reliability, provides cost savings.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an optical network unit ONU equipment is characterized in that, this ONU equipment comprises: ONU, first power conversion unit, second source converter unit and swinging cross unit, wherein,
First power conversion unit is used for being electrically connected with outside AC power supplies, and the AC voltage signal of importing is transformed to the required operating voltage of ONU, exports ONU to;
The second source converter unit is used for the AC power supplies input input AC voltage signal from the outside, is transformed to the required operating voltage of ONU, exports the swinging cross unit to;
The swinging cross unit is used to receive the required operating voltage signal of ONU that the second source converter unit is exported, and is carried on the twisted pair wire of redundant configuration in the ethernet line, with exporting ONU to from users'data signals;
ONU, be used to receive the signal of swinging cross unit, isolate the required operating voltage signal of ONU by the ethernet line transmission, and the required operating voltage of ONU that receives the input of first power conversion unit, select the required direct voltage of one road ONU, give each module for power supply among the ONU.
2. ONU equipment as claimed in claim 1 is characterized in that, described ONU comprises CPE module, power devices module, Ethernet transformer module, feed extraction module and power supply selection module, wherein,
The feed extraction module, be used for according to predefined separation strategy, from the ethernet line of swinging cross unit output, isolate d. c. voltage signal and data-signal, export d. c. voltage signal to power supply and select module, export data-signal to the Ethernet transformer module;
The Ethernet transformer module receives the data-signal that the feed extraction module is exported by ethernet line, carries out the rectification and the isolation of data, exporting the CPE module to handles, receive the data after the CPE resume module, modulate and isolate, export outside network equipment to;
Power supply is selected module, be used to receive the feed extraction module and/or, the d. c. voltage signal of first power conversion unit output is selected the required direct voltage of one road ONU, exports the power devices module to;
The power devices module, the required dc voltage conversion of ONU that is used for input is the required voltage of CPE module, exports the CPE module to;
The CPE module, the voltage that is used for providing according to the power devices module carries out the processing of data-signal and the processing of procotol, is connected with local side apparatus.
3. ONU equipment as claimed in claim 2, it is characterized in that, described predefined separation strategy is: the twisted pair wire that is used to carry d. c. voltage signal according to setting in advance in the redundant configuration, extract d. c. voltage signal from the twisted wire of this carrying d. c. voltage signal that sets in advance.
4. ONU equipment as claimed in claim 3 is characterized in that, described feed extraction module be further used for to isolated d. c. voltage signal carry out circuit go disturb to handle.
5. ONU equipment as claimed in claim 3 is characterized in that, described feed extraction module is further used for receiving the data-signal of Ethernet transformer module output, exports the swinging cross unit to;
The swinging cross unit receives the self feeding extraction module by the ethernet line data signals transmitted, exports user communication device to.
6. ONU equipment as claimed in claim 5 is characterized in that, described swinging cross unit links to each other by the RJ45 interface with the feed extraction module, links to each other by the RJ45 interface with user communication device, links to each other by the DC power supply interface with the AC power supplies input.
7. ONU equipment as claimed in claim 2 is characterized in that, commutator and complementary metal oxide semiconductors (CMOS) CMOS that described power supply is selected module to comprise and had controlled function manage switch.
8. ONU equipment as claimed in claim 7 is characterized in that, described switch
The feed extraction module has direct voltage and first power conversion unit does not have direct voltage detecting, conducting feed extraction module and power devices module;
First power conversion unit has direct voltage and the feed extraction module does not have direct voltage detecting, conducting first power conversion unit and power devices module;
Detecting first power conversion unit and the feed extraction module all has direct voltage, according to conducting strategy conducting first power conversion unit that sets in advance and power devices module or, conducting feed extraction module and power devices module.
9. ONU equipment as claimed in claim 8, it is characterized in that, the described conducting strategy that sets in advance is: the stability of the d. c. voltage signal that first power conversion unit that obtains according to detection and feed extraction module provide, select stability preferably d. c. voltage signal export the power devices module to.
10. ONU equipment as claimed in claim 1 is characterized in that, the required operating voltage of described ONU is 5V or 12V.
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| CN 200910243469 CN101742367B (en) | 2009-12-23 | 2009-12-23 | Optical network unit equipment |
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| CN 200910243469 CN101742367B (en) | 2009-12-23 | 2009-12-23 | Optical network unit equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023663A (en) * | 2012-12-07 | 2013-04-03 | 中兴通讯股份有限公司 | Router power supply device and router power supply device method |
| CN104579700A (en) * | 2014-12-12 | 2015-04-29 | 博为科技有限公司 | Intelligent optical network terminal and optical network system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100605926B1 (en) * | 2004-04-30 | 2006-08-01 | 삼성전자주식회사 | Optical transceiver for compensating the loss and optical network using the same |
| CN100359851C (en) * | 2005-01-28 | 2008-01-02 | 飞博创（成都）科技有限公司 | Optical network unit powered device based on Ethernet power supply mode |
| KR100765471B1 (en) * | 2006-05-30 | 2007-10-09 | 주식회사 다산네트웍스 | Optical line termination and optical network unit |
| CN101436786B (en) * | 2007-11-14 | 2011-02-09 | 环旭电子股份有限公司 | Power supply switching device and network appliance |
| CN101409626B (en) * | 2008-12-01 | 2011-04-20 | 北京格林伟迪科技有限公司 | Optical network unit and method for controlling power supply user terminal access thereof |
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2009
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023663A (en) * | 2012-12-07 | 2013-04-03 | 中兴通讯股份有限公司 | Router power supply device and router power supply device method |
| CN104579700A (en) * | 2014-12-12 | 2015-04-29 | 博为科技有限公司 | Intelligent optical network terminal and optical network system |
| CN104579700B (en) * | 2014-12-12 | 2018-03-02 | 博为科技有限公司 | A kind of ASON terminal and optical network system |
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Address after: 100085 Beijing, Haidian District on the basis of information industry on the West Road, No. 38 Patentee after: GW DELIGHT TECHNOLOGY CO, LTD. Patentee after: Gelin Weier Sci-Tech Development Co., Ltd., Beijing Address before: 100085 Beijing, Haidian District on the basis of information industry on the West Road, No. 38 Patentee before: Beijing GW Delight Technology Co., Ltd. Patentee before: Gelin Weier Sci-Tech Development Co., Ltd., Beijing |
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