vdsl2 30a

addition, the VDSL2 also has the perfect PSD control, the loop diagnosis and the on-line reconfiguration and so on function. Current situation of VDSL2 technology Through the analysis of VDSL2 chip and equipment, the current VDSL2 technology is not mature enough, the present situation is as follows: --The support f

as follows: the maximum cutoff frequency of 8a, 8b, 8c, and 8d is 8 MHz; the maximum downlink transmit power of 8a is 17.5dBm; 8b is 4505dbm; and 8c is 11.5dBm; 8d is 14.5dBm. The cutoff frequency of 12a and 12b is 12 MHz, while 12a requires US0 and 12b does not. The end frequency of 17a is 17.6 MHz, and the end frequency of 30a is 30 MHz. The transmit power of these profiles is 14.5dBm. VDSL2 Spectrum Man

communication quality of leased line users; other users can flow to GE upstream DSLAM equipment. 2) For DSLAM with FE upstream, if the number of users is less than 200, or in remote areas, the uplink resources are limited, the original uplink mode can be retained; if the number of users exceeds 200, you can merge multiple DSLAM users into one DSLAM device based on the actual situation, and use GE uplink. 3) the original use of STM-1, E1 and FE cascade DSLAM, can be removed according to the spec

, on the other hand, VDSL technology has unparalleled advantages in bidirectional symmetry and high bandwidth within a short distance, so people may look forward to VDSL technology. It can be said that the choice of the two technologies is very contradictory. In the long run, Using DMT modulation is the only way to develop VDSL technology. The compatibility between VDSL2 and ADSL2 + gives the industry a clear idea of DSL technology development: prior

resources are limited, the original uplink mode can be retained; if the number of users exceeds 200, you can merge multiple DSLAM users into one DSLAM device based on the actual situation, and use GE uplink. 3) the original use of STM-1, E1 and FE cascade DSLAM, can be removed according to the specific circumstances, and according to the above principles using different uplink networking. Because DSLAM will provide access to TriplePlay, apart from the main factor of uplink bandwidth, DSLAM also

availability and sustainable development capability. The cost is relatively low, the scale effect is obvious. The network runs stably and is not affected by the objective environment. High safety performance, strong maintenance capability. The equipment has simple structure and less intermediate links. As can be seen from the above points, wired technology has more advantages than wireless technology, especially in terms of bandwidth delivery capabilities, so the mainstream of wired techno

is the number of records, W = SQRT (U ^ 4-25v ^ 4), D = u ^ 4 + 25v ^ 4,We can obtain a group of solutions A = D/(2uvw ). In addition, if we can find all the solutions of the equation 5u ^ 2 = 4 * s ^ 4 + t ^ 4, we can find all possible a through this algorithm.TopReply to: mathe () (one star (intermediate) Credit: 105 19:32:28 score: 0? Equation: 5u ^ 2 = 4 * s ^ 4 + t ^ 4I got two more solutions.T = 892225, S = 2493275AndT = 11045611921S = 5822032439Through these solutions, we can get two oth

: Thread-1 Current Thread object: Thread-1 Current Thread object: Thread-1 Current thread object: thread- 1 Current Thread object: Thread-1Code Demo: (3. Determine if the thread is started)Package Com.yeqc.thread;class Runabledemo implements Runnable{private string Name;public Runabledemo (string name) { THIS.name = name;} @Overridepublic void Run () {for (int i = 0; i Operation Result:falsetruea:0a:1a:2a:3a:4a:5a:6a:7a:8a:9a:10a:11a:12a:13a:14a:15a:16a:17a:18a:19a:20a:21a:22a:23a:24a:25a:26a :

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, fib

There are many things worth learning about broadband access technology. Here we mainly introduce how to achieve bidirectional symmetric transmission speed of Mbps, which can be upgraded from ADSL, this section describes the use of broadband access technology to achieve stable transmission quality. Recently, NEC and NEC Magnus Communications announced that they will provide communication operators with the latest "AM3150R2" product of the "AM3100 series" Integrated

three-band standard has defined either the QAM or DMT modulation methods, as a result, there has been a long debate over the two standards, facing the choice of the two modulation methods. The QAM method is simple and easy to develop, and the DMT method is more complex. Although with the development of ADSL2 + technology, many people have doubts about the application prospects of VDSL technology, on the other hand, VDSL technology has unparalleled advantages in bidirectional symmetry and high b

than 250 M away from the end user, with a target bandwidth of 500-1000 M per household. As you are closer to the user, you can get a relatively higher bandwidth, and G. fast will be used as a gigabit access solution comparable to FTTH. Unlike previous technologies, G. fast introduces user-defined concepts at the initial stage of standard design. Traditional copper wire access technologies, both ADSL2 and VDSL2, are fixed upstream and downstream bandw

optimize the broadband access network according to the "FTTx + ADSL2 +/VDSL2" construction model. They believe that the "light-to-copper retreat" is not only time-ordered, but also space-oriented. In the early days, PON technology can target some high-end users with high bandwidth business needs, or, as a supplement to xDSL, xDSL is provided in areas with intensive SMEs to make up for the shortcomings of xDSL in these fields. After a step-by-step con

After installing Catia2013 and connecting to SQLServer, the following ERROR occurs: Errorstack: Errorcode: Type: Error, ERROR: 1, Owner: 30a. The problem is resolved after the OFFICE is installed. What is IBM's explanation: www-01.ibm.comsupportdocview.wss? Uidswg1HE09464ProblemsummaryWhentryingto After you install Catia 2013 and connect to SQLServer, the following Error occurs: Error stack: ERROR code: Type: Error, Error: 1, Owner:

frequency greater than 50Hz, the output torque of the motor will be reduced. Generally, a motor is designed and manufactured at a voltage of 50Hz, and its rated torque is also provided within this voltage range. Therefore, the speed regulation at the rated frequency is called the constant torque speed regulation (t = tE, P When the inverter output frequency is greater than 50Hz, the torque generated by the motor will decrease linearly in inverse proportion to the frequency.When the motor runs a

landing that set the 3.7V alarm, the alarm can support 2 minutes or so 2. Motor: 2212 KV980 recommended Sunnysky A2212 (with more people, cheaper, good after sale) Yinyan 2212 (new, Looks good). Come out to fly, always want to fry, do not buy too good, first with cheap equipment practice technology. But Xxd really does not recommend 3. ESC: If there is no plan to upgrade the large motor, good surplus Skywalker 20A is enough. You can also brush the Blheli firmware and finish the platinum explosi

public,private and protected can be used before the method is constructed.If a class does not have a constructor defined for the class, the system automatically creates a default constructor for the class that is null for the constructor parameters and methods.Parameters are passed:There are two types of parameters passed: Basic type ParametersAll of the basic data types are passed, including numeric, Boolean, and so on. In this case, all parameter passing takes the form of a value pass. Th

The formulas and rules between A, B and the result are solved by the known conditions and results. A=qwayma,,b=6A=qweyma,,b=7A=qwjhmw,,b=21A=qwjomw,,b=28A=qwzkmw,,b=64A=qwzlmw,,b=65a=qwzmmw,,b=66a=qwzpmw,,b=69a=qwdmmw,,b=76a=qwhjmw,,b=83a=qwlnmw,,b=97Result =6003 A=qwwymq,,b=5A=qwaymq,,b=6A=qwfina,,b=12A=qwfkna,,b=14A=qwjjna,,b=23A=qwjnna,,b=27A=qwnjna,,b=33a=qwnpna,,b=39A=qwrlna,,b=45a=qwrona,,b=48A=qwvlna,,b=55a=qwdjna,,b=73a=qwdona,,b=78A=qwlgna,,b=90a=qwlhna,,b=91a=qwvona,,b=58Result =6004 A

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, the system automatically creates a default constructor for the class. The constructor parameters and methods are empty. Parameter transfer: There are two types of parameters passed: Basic type parametersAll data types are passed, including numeric and Boolean. In this case, all parameters are passed by value. That is, when a parameter is passed to the method, the method obtains only a copy of the parameter value. Therefore, the method does not change the value of the parameter variable and