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Archive for the ‘Modem’ Category

The modem is an essential piece of equipment for Internet connectivity. The full term is modulator-demodulator and simply means that the piece of equipment demodulates frequencies into digital data. Without the modem a computer cannot communicate with other computers connected to the Internet.

The original 300 baud modem of the 1970s was used for connecting the computers in the network with bulletin boards. It could transmit 30 characters in a second. This was good enough for text, but when users started to share graphics it simply couldn’t do the job any longer. From there we see extreme improvements in the modem to the ones we use today.

Within two decades it developed to the point where it could transmit 56kbps and could be used for dial-ups, but the ADSL modem was the new term of the 2000s. ADSL stands for Asymmetric Digital Subscriber Line. The new technology made it possible to download and upload at the same time and at a very fast speed. Instead of someone only browsing the Internet or only using the phone, it was now possible to do both at the same time.

For some businesses however, upload and download data at equal speed is important. To create the same bandwidth for upload and download, the SDSL modem had to be developed. The “S” stands for Symmetric. Voice communication is not possible while it is connected and as such most businesses using such has a dedicated modem for the purpose.

The sat-modem is a satellite type of modem which converts digital data into radio waves. The radio waves are needed for communication with the satellite dish. It is a more expensive option, but well suited for businesses in remote areas where DSL connectivity is not offered.

The wireless modem connects a wireless network instead of the conventional telephone operation. The user computer or device is thus directly connected to a wireless ISP providing Internet access. Technology has come a long way over the past few decades and one can only wait in anticipation to see how improvements in modem-technology will affect future data communication.

Toronto, Canada – GAO Research Inc. has recently updated its fax modem software supporting commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs and OS such as Windows and Linux. It implements the ITU-T V.29 Recommendation, which provides full-duplex data transmission at rates of 9600, 7200, and 4800bps over four-wire leased lines. The soft modem software is also modulation technique used in Group 3 fax for fax data transfer at 9600bps and 7200bps on 2-wire lines. It consists of transmitting functions and receiving functions which are called to transmit/receive bits in groups of 2 or 3 at rates of 1200 or 1600 symbols per second respectively.

GAO Research’s V.29 modem data pump software operates in either half or full duplex modes and has a “quick connect” feature. It uses amplitude and phase modulation for synchronous transmission. The V.29 soft fax modem solution operates within a multi-tasking environment or as a stand-alone task and is optimized for fixed-point arithmetic. It can be integrated with other data modems, telephony, speech compression, and fax relay solutions for use in various applications.

All GAO’s software are subject to the most stringent quality control procedures, which is reflected in its well structured code, detailed design documentation, and well-defined design and test plans. This ensures ease of integration into the user’s system, easy maintenance, and a smooth upgrade path for next-generation products.

About GAO Research Inc.

GAO Research Inc. is a recognized international leading provider of communications software to telecom and electronics companies and provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

Toronto, Canada – GAO Research Inc. has recently updated its fax modem software supporting commonly used processors such as TI C5000 & C6000 series DSPs, ARM processors and ADI DSPs and OS such as Windows and Linux. It implements the ITU-T V.29 Recommendation, which provides full-duplex data transmission at rates of 9600, 7200, and 4800bps over four-wire leased lines. The soft modem software is also modulation technique used in Group 3 fax for fax data transfer at 9600bps and 7200bps on 2-wire lines. It consists of transmitting functions and receiving functions which are called to transmit/receive bits in groups of 2 or 3 at rates of 1200 or 1600 symbols per second respectively.

GAO Research’s V.29 modem data pump software operates in either half or full duplex modes and has a “quick connect” feature. It uses amplitude and phase modulation for synchronous transmission. The V.29 soft fax modem solution operates within a multi-tasking environment or as a stand-alone task and is optimized for fixed-point arithmetic. It can be integrated with other data modems, telephony, speech compression, and fax relay solutions for use in various applications.

All GAO’s software are subject to the most stringent quality control procedures, which is reflected in its well structured code, detailed design documentation, and well-defined design and test plans. This ensures ease of integration into the user’s system, easy maintenance, and a smooth upgrade path for next-generation products.

About GAO Research Inc.

GAO Research Inc. is a recognized international leading provider of communications software to telecom and electronics companies and provides the most comprehensive and unique suite of modem, fax, telephony, speech software, VoIP, FoIP, fax relay and fax/modem/voice relay software for embedded applications for DSP and microprocessors.

You may be in for a surprise if you’re planning to sign up for dial-up Internet. Although dial-up modems were always installed on computers in the past, many computers are now being sold without them. In order to avoid having problems once you’re paying for Internet services, you should check whether your computer has a dial-up modem installed. There are two areas to look for a dial-up modem. First, look at the back of your system unit, or tower. There should be a port that looks just like the telephone jack in the back of a telephone and in the wall. You can use a regular phone cord to test whether the port is the right size (if it’s too big, it’s not the right port). You will find one of these three scenarios:

There is only one a port, but it is slightly larger than a regular phone port. This is the Ethernet port used for broadband connections, like cable and DSL. If this is the only port you have, you do not have a dial-up modem. There is one telephone port (often along the bottom, but not always) and a telephone cord fits in it snugly. You have a dial-up modem! If you are planning to use a telephone on the same phone jack your computer is using, plug a splitter in the wall jack, then plug in two phone cords into the splitter for each device. There is two ports side by side that fit the telephone cord. You found your dial-up modem! The reason you have two ports is because one is to plug a phone cord coming from the wall and the other is to connect a telephone to use when you are not online. The port marked “line” or showing a picture of a phone jack is for the cord coming from the jack in the wall. The port reading “phone” or showing a picture of a telephone is where you plug a phone cord leading to your telephone.*Note: You do not need to use the “phone” port. Also, keep in mind that if you accidentally plug the wall jack line into the “phone” port instead of the “line” port, you will not be able to connect!Open Control Panel, then make sure you are in classic view if you have XP or Vista. Open your modem options. On older versions of Windows, you’ll see “Modems”, and on 2000 or newer, you’ll see “Phone and Modem Options”. Click on the “Modems” tab (skip this step if you have an older computer). Here is a box listing the modem(s) installed on your computer. Beside the modem it lists where it is connected. It will either have “not present”, or “COM” and a number. (On older computers, click properties for the modem in question and look for “Port:” Your modem must be listed as attached to one of the COM ports, or you modem has been removed or corrupted. If this is the case, you must either reinstall, repair, or replace the modem. If you have a modem both installed in the tower and listed as properly installed, you are ready to sign up for dial-up. Other minor issues could occur once you try to connect, however, you will be better prepared and less likely to have connection issues upon starting your new service. If you do not have a modem, you need to buy one. If you do, the following steps will show you how to check if your modem software is installed properly.

3G Modem – Characteristics and Benefits

Modems are one of the most important technological inventions. Without the modems, the internet would still unknown to us. The modem has undergone several innovations and in this era, we have a third generation modem – the 3G modem. Wireless technology followed the trend in technology and again, models of modems were updated. The 3G modem is common to computer savvy person who is always on the go.

Characteristics of an ideal 3G modem

They are compatible with any PC, laptop or Mac.
The speed of the broadband is fast.
It has a 99% AU coverage.
It can be used with multiple computers.
It would not require a telephone line.

Simple steps in setting up a 3G modem

The first step is to insert the sim card into the USB modem. Then find the computer port and plug the USB connection. Insert the USB modem into your computer. The software for the use of the modem will be downloaded automatically from the same USB modem, and the 3G modem is ready to use.

There are 3 kinds of 3G modems. These are USB 3G modem, the USB dongle and the PC data card. Many service providers allow access to their mobile networks with the use of the 3G wireless modem. Choice of the 3G modem is relevant to choosing the service provider. Many service providers include the 3G modem in the package. The 3G USB and 3G dongle are more common than the PC cards. It is important that the compatibility is established; otherwise the modem cannot be useful. PC data card modems are only applicable for laptop use. Most 3G modems already have pre-loaded software.

Benefits from the 3G modem

The 3G modem gives you unlimited freedom to access the internet anywhere and anytime. Unlike the traditional fixed-line broadband, the 3G modem does not restrict your location. It is space savings. If you have very limited space and work area, the 3G modem is best for you, even if you only work from home. Places where no fixed-line broadband connection can benefit from the internet by using the 3G modem.

This fast-paced life benefits a lot from the 3G modem. Internet can be accessed anywhere and anytime and there is a continuity of working environment. With the current market competition, the price of a 3G modem has become very competitive to become affordable.

So you need a dial-up modem. Don’t let the task of finding and installing the right one overwhelm you. If you are looking for a way to save money, but not get stuck with something cheap, you don’t want to hire a technician to install one for you. It might be easier, but it’s not necessary. If you get the right modem, it’s easy to install and won’t cost a fortune. But first you need to understand some things about dial-up modems in general.

Never buy a used modem. For one thing, you won’t know if its actually going to work, and it could be also missing the installation instructions and driver software CD you need. A new modem may be more expensive, but money you save getting a used modem is not worth the frustration it not installing correctly or wearing out much sooner than a new one.

Not all modems are the same. All Internet services require that you have a modem or some similar equipment, but there’s a big difference between a broadband modem and a dial-up modem. Any broadband modem will not connect to dial-up—it would be like trying to fix a tractor with car parts! Most modems say “Dial-up” “Cable” or “DSL” in their name, however, if you aren’t sure, check the description on the box before you put it in your cart, or ask an attendant or friend to help you find the right modem.

Check it’s compatibility to your computer. What version of Windows is operating your computer? Or is it a Mac? Do you have a desktop or a laptop? Make sure the modem you have chosen will be able to install on your computer. External modems, the type of modem that plugs into the outside of your computer are usually compatible with almost all computer types.

Make installation simple. Keep in mind that external modems will be much easier to install than internal modems (which require you to unscrew the cover from your computer tower, etc.) Also, external modems can easily be moved if you want to use it on more than one computer. If you have a laptop, you basically have to install it externally. Even on a desktop, installing an internal modem takes much longer and involves the risk of damaging other computer parts in the process. With an external modem, all you have to do is plug in the modem into a USB port and run an installation CD.

Get the latest standard. This is another reason not to get a used modem. Modems are constantly being improved over the years with compression technology that can dramatically improve your connection speed. V.92 was introduced in 2004. It has the fastest upload speed yet (improved from 33K to 48K), an Internet Call-Waiting feature that allows you to put the Internet on hold to take calls while online, and improved connection speed (both while connecting and once connected).

Try looking online. If you need to get connected right away, you probably want to buy your modem locally. However, if you have access to the Internet elsewhere, it might be worthwhile to look online. You can find websites that show the prices of several competitors, read about different types of modems, and have more modems brands to choose from. Many stores either don’t offer or offer very few types of dial-up modems, because the demand for them has decreased. Don’t forget to calculate shipping costs when you are looking for the best price, and make sure you understand the seller’s return policy.