In this paper, several popular access network technologies are described in detail, and the advantages and disadvantages of different technical schemes are analyzed and compared.Key words: Access XDSL ADSL VDSL Cable Modem LMDS
With the rapid popularization of Internet and the opening of many new services on the Internet, the demand for data transmission rate is increasing. However, the current access to IP network technology is still based on dial-u
The following is the ADSL Router installation on Datang Telecom A-400 to open the routing and UT Kang ADSL Router installation of detailed introduction, read the article today, you will be familiar with Datang Telecom A-400 to open the routing and UT Kang ADSL Router installation method.
In the edit box, enter the Ethernet port IP address of the adsl modem. If this item is not changed during the first configuration or configuration, the default value
We should be familiar with PPP protocols, so here we will focus on the content of multiple PPP connection protocols. First, let's review the concept of PPP. The acronyms of Point-to-Point Protocol. A data link protocol used for dial-up telephone connection, for example, between a computer and the Internet. compared with SLIP (Serial Line Interface Protocol), PPP provides better protection for data integrity and security at the cost of additional costs.
Do you think the speed of dial-up Internet
①. 1483B: refers to the 1483 bridging protocol. This function is implemented based on the Basic bridging protocol and on the first layer of the network physical layer, when this solution is used, the MODEM only acts as a bridge device and does not provide any protocol conversion or address filtering functions. Generally, after the MODEM can be synchronized with DSLAM and the VPI/VCI is set, basically, users
Specification entity (entityspecification) defines a certain type of entity;
Characteristicspecification defines attributes of one or more types of entities;
Characteristicspecvalue defines the possible values of feature types;
You can define attributes for productspecification, product, and customer.
So how can we apply Sid's "Specification mode" and "feature mode?2. Introduction of specification mode and feature Mode
The following uses the most common product display page of an e-commerce
The first task is to drive the 3G Nic of China Telecom on a small board. The new thing is to run the network card on the PC first. The driver with the card is not available in Linux, so there are two ways to do that: Google: Is there a Linux open-source driver with the card; the other is to check whether the kernel itself can be supported. Later, it was confirmed that the USB-serial part of the kernel could be driven.
This is a CDMA card, so I searched for something related to the CDMA
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Author: Holy Hall wizards reply date: 10:54:54
Method http://www.cnitsc.com/adsl/share/jiben/share.htm for Internet sharingAuthor: RicoADSL is a fast and inexpensive broadband access method. You can allow multiple computers in the LAN to share an ADSL line to access the Internet. Generally, there are two ways to connect to the Internet by sharing the ADSL line in the LAN:1. Method 1: c
How to connect your computer to the Internet through a mobile phone
I. Mobile phone1. The mobile phone must have a data line interface or an infrared interface to support the GPRS internet access function.2. Machine Settings (taking nakia7610 as an example, let's take a look at it) 6f] isA) choose "menu"> "Settings"> "Data Connection"> "GPRS"> "GPRS connection", and select "when necessary ", if you want to prove that your cell phone battery is good enough, you can also choose "always online", so
Computer 678 error Code resolution
Broadband connection error Code 678 workaround
1, check whether the modem signal is normal, computer network card lamp is normal, and try to restart the modem and computers 5 minutes after the connection.
2, check the cable connection status and unplug the network cable, consider whether the network cable or telephone line reasons.
3, consider the use of a variety of
At present, wireless router has become a home wireless sharing and Internet application of the mainstream, about the use of wireless router is also a lot of users are very interested in, we will pick some of the more representative of the wireless router problem, for you one by one to explain its fault solution, I hope you can analogy.
The wireless router's red diagnostic or power light has been flashing. Wireless router does not work properly, how to solve?
A: This is generally because the wi
Most of ADSL hardware faults are caused by connection looseness, network cable disconnection, Hub damage, and computer system faults. Generally, you can locate the problem by observing the indicator. In addition, the voltage is abnormal, the temperature is too high, and lightning strikes are also prone to faults. If the voltage is unstable, it is best to provide small-Power UPS for the equipment. The MODEM should be dry and ventilated to avoid water f
Option1 (comx-1). value = true
Exit sub
Error_form_load:
Option1 (c-1). Enabled = false
Resume form_load_1Exit sub
Exit subWhy:Msgbox err. DescriptionEnd sub
'Check the serial port
'Check whether the modem command is complete
Private sub chk_modem ()On Error goto why
Dim t as single
Dim L as integer
T = Timer
Do
Combuf = combuf + mscomm1.input
L = instr (1, combuf, "OK ")
Loop until l
If l = 0 thenNo modem
communication protocol operation. The MAC address is expressed in three bits, that is, eight devices can be addressable in one micro-network (the number of connected devices is actually unlimited, but only eight devices can be activated at the same time, one of them is primary, and seven are slave ). Figure 1 shows the topology of a Master/Slave Device in the micro-network. In addition, the Bluetooth system supports point-to-point communication to form a distributed network, that is, one master
Analysis of the problem: Why is the ADSL connection disconnected? Web pages cannot be opened, downloads are interrupted, or online video and audio streams are interrupted. These problems may cause many users to access the Internet through ADSL. However, when you carefully check the status of the adsl modem, you will find that the dial-up login is successful. So what exactly is the problem? How Should ADSL users troubleshoot?
ADSL Network disconnection
save investment; it can enjoy ultra-high-speed network services to provide users with asymmetric upstream and downstream transmission bandwidth; it saves costs, you can call the Internet at the same time without affecting each other, and you do not need to pay additional phone fees when accessing the internet. The installation is simple, and you do not need to apply for additional lines. You only need to install an ADSL Modem on a common telephone li
provider) for advice, or you can make a quick decision with the way you purchased your router's previous network connection.There are several common ways to connect hardware:1, telephone line-> ADSL modem-> Computer2, twisted pair (Ethernet cable)-> computer3, cable TV (coaxial cable)-> Cable modem-> Computer4, optical fiber-> Photoelectric Converter-> proxy server-> PCADSL/VDSL PPPoE: A computer running a
Cause of failure
This problem may occur if one of the following conditions is true: • Line noise is present on the telephone line connected to the modem.
• The modem appears to behave abnormally.
• A timing problem occurs between the computer and the modem.
Warning: If you modify the registry incorrectly by using Registry Editor or other methods, you may have
At present, wireless router has become a home wireless sharing and Internet application of the mainstream, about the use of wireless router is also a lot of users are very interested in, we will pick some of the more representative of the wireless router problem, for you one by one to explain its fault solution, I hope you can analogy.
The wireless router's red diagnostic or power light has been flashing. Wireless router does not work properly, how to solve?
A: This is generally because the wi
Website design is one of the most important parts, but the color matching in web design is more important.
Today, I have collected 55 color tools, which are all truly useful color combinations.
1. Color grab
2. colorzilla
3. Color rotate
4. stripe Generator
5. colors on the Web
6. colormod
7. Daily Color Scheme
8. Color hunter
9. Color Scheme designer
Webpage palette addressColor Palette creatorThis is one of my favorites, which generates 10 identical colors of different gray levels through basic tones and can generate PNG files.Http://slayeroffice.com/tools/color_palette/4096 color wheel version 2.1A very beautiful natural color capture tool. It is very convenient to use the mouse to pick up the color.Http://www.ficml.org/jemimap/style/color/wheel.htmlTechnicolorDrag the slider with the mouse, and then generate the recommended color based on
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