CATV Broadband Integrated Information network based on 3COM company CATV Access Network platform is a successful implementation of cable TV, data communication and network telephone "three nets in one" on the 750MHz bandwidth fiber-optic coaxial hybrid network (HFC). The open television, telephone, computer line of the public Information network, the main technical indicators to reach the world's advanced level. Now, there are 35 sets of TV programs d
According to the specification for the management system of equipment in the HFCs, the communication physical layer of Class I responder is established on the RF channel, therefore, an Ethernet device manager needs a device that acts as a "Router"
the development of IP telephony has become a new business growth opportunityOther value-added services-distance education, E-commerce, electronic fees, telemedicine, online games, etc.3. HFC Network data communication technologyThe HFC network, as the network that transmits image information, has a bandwidth of 5MHz---1000MHz, and usually a TV channel uses 6MHz or 8MHz, such as PAL and NTSC. Data transmiss
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An example of an MVC version:
Controller code
public class Homecontroller:controller
{public
actionresult Index ()
{return
View ()
}
Public ActionResult Upload ()
{
httpfilecollection HFC = System.Web.HttpContext.Current.Request.Files;
String imgpath = "";
if (HFC. Count > 0)
{
Imgpath = "/testupload" +
+" ', Imgurl: ' "+ Imgurl +" '} ";
Response.Write (res);
Response.End ();
}
This example complete code download
An example of an MVC version:
Controller code
public class Homecontroller:controller
{public
actionresult Index ()
{return
View ()
}
Public ActionResult Upload ()
{
httpfilecollection HFC = System.Web.HttpContext.Cu
();
}
An example of an MVC version:
Controller code
public class Homecontroller:controller
{public
actionresult Index ()
{return
View ()
}
Public ActionResult Upload ()
{
httpfilecollection HFC = System.Web.HttpContext.Current.Request.Files;
String imgpath = "";
if (HFC. Count > 0)
(hybrid fiber-coaxial cable HFC).
DSL
By limiting the distance between the user and the ISP modem, the DSL can transmit and receive data at a much higher rate, its data transfer rate is usually asymmetric in two directions, and the ISP is routed to the home at a higher rate than the home-to-ISP router. Because home users are more likely to be consumers of information.The actual download and upload rate available to the user is a function of the dista
community properties.The Intelligent Community Information system can be divided into two parts of information network subsystem and control network subsystem from function.The Information network subsystem is composed of data system, voice system, CATV system, on the one hand realizes the comprehensive access of data, voice and image, on the other hand provides the transmission channel for the control network subsystem, its transmission way is flexible, can be FTTB +lan, ADSL,
, c no sendS. D= (+1+1+3-1+1+3+1-1)/8= 1, D send 1
2-17 try to compare the advantages and disadvantages of xDSL, HFC and FTTX access technology.
For:XDSL technology is to use digital technology to transform the existing analog telephone subscriber line, so that it can carry the broadband service. Low cost, easy to achieve, but the bandwidth and quality of the large difference.The biggest advantage of
For jquery1.11.1 ajaxfileupload. js, jquery1.11.1
Ajaxfileupload source code
Solve the problem that success is not taken after the upload is successful.
Solve compatibility problems of jquery in later versions
JQuery. extend ({ CreateUploadIframe: function (id, uri){// Create frameVar frameId = 'juploadframe '+ id;Var iframeHtml = '
# Region Upload File Read imported contentPublic JsonResult Upload (){HttpFileCollectionBase HFCs = Request. Files;String Path = "";List String PhysicalPath = "
can be divided into two types of wired access and wireless access, access to the user's environment and needs, it can be broadly divided into home access, campusAccess, institutions and enterprise access.From the perspective of implementation technology, the current broadband access technology is mainly the following: Digital subscriber line xDSL, optical fiber coaxial cable mixed network HFC technology, optical fiberAccess technology, wireless acces
Cable Modem is developed in recent years, mainly for CATV network data transmission. Most new cable networks now use fiber-optic coaxial hybrid (HFC) networks, and their huge bandwidth and relative economics make them attractive to cable companies and newly established telecoms companies. Because cable modem is a kind of equipment that provides data service on HFC network, it is usually equated with
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Here's a quick review of the issue:
What is net neutrality all about?
The principle generally means that content isn' t prioritized above others, so that a user can go where he wants and do what he wants on the Internet without the interference of his broadband provider. supporters of net neutrality protections say that without the rules, Internet service providers like Comcast and Time Warner wil
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