business broadband network, the broadband access network is undergoing profound changes. On the one hand, xDSL technology gradually from adsladsl2adsl2+ to provide a higher bandwidth VDSL2 upgrades, which also requires vdsl2dslam closer to the user side. With the increase of the number of VDSL2 Zhi, the requirement of efficient aggregation of large quantities of dslam is put forward. On the other hand, fiber is rapidly replacing copper wire as an ide
At present, the GPON Access Technology in China has developed very rapidly. Many people may not know the characteristics and advantages of the GPON access technology and EPON. It does not matter. After reading this article, you will certainly have a lot of GAINS, I hope this article will teach you more things. The arrival of the 3G era will greatly promote the demand for network bandwidth, while the second
gigabit passive optical Network (GPON) can provide the path of the network evolution and the bandwidth needed to transfer the new business in the current market technology.
Advantages of PON structure
Compared with the traditional network structure, PON has the following advantages:
Since PON is called passive, it does not require the installation of traditional active devices between central bureaus and user stations. These active devices typical
With the development of China's access industry, optical fiber access technology has become one of the mainstream technologies, and many branch technologies have emerged. GPON can meet the requirements of optical fiber access network. The increasing popularity of the optical fiber access market brings a rapid developme
the loop, 24 ports of data flow all from 2 SFP ports out;Main uses: LAN set up (hotel, company, internet cafes, etc.), building network and so on.650) this.width=650; "Src=" https://img.alicdn.com/imgextra/i3/681541042/tb2kwincxxxxxxcxpxxxxxxxxxx_!! 681541042.jpg "width=" 720 "height=" 541 "alt=" tb2kwincxxxxxxcxpxxxxxxxxxx_!! 681541042. "/>C) fool switch function, 24 ports can communicate with each other;Main purpose: Used for data sharing between PC and PC.D) VLAN switch, 24 electrical ports
I will not go into details about the advantages of EPON and GPON. The main points are as follows:
1. Saving money. This is an absolute principle.
2. high bandwidth, with a bandwidth of 1 to 25 GB
3. High Reliability. Optical splitter can be used in the middle, and no switch is required.
Why do I save money by using EPON?
PreviousArticleLet's talk about saving optical fiber for the moment. Let's talk ab
Requirements Description:Since the use of telecom 200M fiber, the resolution card into a dog. Open the domain name around 3 seconds, the less common domain name is around 8s. Suspected telecommunications gateway has a problem, so want to let the router dial authentication , and then set the DNS resolution domain namemodified for the router Dial authentication, the domain name resolution is still unresolved, continue to follow! (Set Ali's DNS 223.5.5.5
The recent testing process has encountered a case of system AES and FEC, here is a brief introduction to their principles and applications in the Gpon system.Aesfor the gpon system, the downlink data is sent by broadcast to all ONU, involving a malicious user to eavesdrop on all broadcast frames, so the system introduces the AES encryption algorithm. It is a packet encryption algorithm, that is, the plainte
As the industry-leading optical module device manufacturer, WTD has recently released the Triple-play GPON series.
GPON three-way device is completely based on the ITU-T G.984.2 Class B + standard design, to meet the-40-+ 85 deg C Industrial temperature requirements, the uplink rate is 1.25 Gbps, the downlink rate is 2.5 Gbps. The device has passed the reliability test.
At the same time, WTD for the three
We have introduced the SNMP protocol and the entire Technical System in the GPON technology. If you have any questions, you can refer to "SNMP protocol technology application example". Next we will discuss the software design in this regard. First, let's take a look at the SNMP protocol proxy.
OLT-side SNMP protocol proxy
To complete ONU control on the Management end, ONU must be managed on the OLT end. SNMP has good support for MIB and is simple, it
GPON protocol StackFirst, the Gpon protocol stack is divided into two parts1. c/m plane----A, embedded OAM B, Ploam C, OMCI2, U (user) plane----A, high-level B, GTC layer C, physical layerSecond, c/m planeThe management control plane is divided into 3 parts:1, ploam Physical layer OAM, the main management delay requires low management, ONU registration, ranging, the establishment of OMCC, alarm information
Q A on knowledge of optical fiber coupler, optical fiber fuse box and optical fiber fuse box Integrated Wiring
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The optical fiber coupler is used for two optical fiber or pigtails.Active connection,Flange.
Optical
telephone access, and achieve triple play in the access network; -- Support for foreseeable new businesses in the future: videophone, VOD, digital cinema, remote office, Online exhibition, TV education, telemedicine, data storage and backup, etc; -- the network structure is simple, the technology is mature, and the access cost is low; -- only the data center in the residential area is an active node, And the wiring of the data center is centralized to reduce the maintenance cost and improve the
, Online exhibition, TV education, telemedicine, data storage and backup, etc; the network structure is simple, the technology is mature, and the access cost is low. Only the data center in the residential area is an active node, And the wiring of the data center is centralized to reduce the maintenance cost and improve the port utilization rate of the equipment. Users are allowed to select operators freely, it is conducive to the competition between telecom operators. It effectively saves the o
, and they hope to implement FTTH access technology in one step. We believe that it is ideal to support broadband Internet access, limited TV CATV access, and ordinary fixed telephone access, but this actually has a huge technical risk.
At present, more than 5 million of FTTH users on the global 97% line only provide Internet broadband access services, because the cost of traditional fixed telephones provided by FTTH is much higher than the technical cost of existing fixed telephones, in additio
In this paper, the measurement methods of optical fiber and optical fiber communication system are briefly introduced, this paper mainly introduces optical fiber measurement: single-mode fiber Mode field diameter, optical fiber loss, fib
replace the traditional TDM return network. A key technical requirement is high-quality transmission of reference clock signals, to ensure the stability of clock signals.
The ON technology can meet the technical requirements of traditional base stations. First, the GPON platform can transmit the reference clock in the physical layer in NTR mode, and secondly, GPON can meet the latency and jitter requiremen
Most of the integrated City Line systems are installed using traditional optical fiber systems; In this case, the appropriate optical installation should be done using the design methods already discussed. The system proved to be feasible through countless successful cases, reliable, stable, mature and excellent.
Another recent installation technology, known as "gas-blown fiber," has been developed in the
1. Preface
A cylindrical media waveguide consists of three parts: Core, package layer, and coating layer. Generally, the diameter of the core of a single-mode or multi-mode optical fiber is 5 ~ 15 μm and 40 ~ 100 μm, with a diameter of about 125 ~ 600 μm. The processed optical fiber end face is ideally a smooth plane. However, in reality, the processing of the optical f
Forty-five traditional knowledge of optical fiber and optical fiber cables
1. Briefly describe the composition of optical fiber.
A: The optical fiber consists of two basic parts: the core, package layer and Coating Layer Made of transparent optical materials.
2. What are the basic parameters used to describe the trans
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