A modem converts your computers data packets into an analogue signal (sounds a bit like a fax machine) and uses the normal telephone network to pass this to your ISP (Internet Service Provider) who then turns the signal back into data and thus enabling your computer to communicate on the Internet. ISDN also uses the telephone network to transmit data to the ISP but does not convert the data to analogue signals; instead it uses digital equipment at the exchange and on your computer.

DSL is Faster: ISDN provides two voice/data channels, each at speeds of 64 Kbps, while DSL is predominantly a data service providing up to 1.5 Mbps downstream and up to 512 kbps upstream. Business DSL offers T1-like speeds of up to 1.5 Mbps-more than 10 times faster than ISDN! DSL is "always on": ISDN is a dial-up service (like a regular telephone line) that's digital and carries both data and voice; Business DSL is "always connected"

Xecunet DSL provides high-speed internet access directly to you over your telephone line, whereas cable modem offers high-speed internet access over a cable television line which means the bandwidth would be shared with everyone in the local loop. This then means that cable-modem access may slow down if there are too many people using it.

When considering an ISDN or DSL line, know the pros and cons. Cost: ISDN through the telephone company costs an average of $60 / mo., plus a connection fee, and DSL is usually about $45 / mo. Sometimes connection fees are discounted when signing a one year term agreement (check with your provider). With ISDN, you should get 2 to 3 times faster downloads, and DSL is generally 10 - 20 times faster than dial up.

i. Webopedia defines this Broadband as ? "A type of data transmission in which a single medium (wire) can carry several channels at once. ii. There are several forms of DSL service ? ADSL being the most popular in the consumer or home market. ADSL refers to asynchronous DSL where the download speed differs from the upload or upstream transmission rate. iii. The Federal Communication Commission in its biannual report last year placed Broadband in the United States as having 16.2 millions lines.

The most important difference is that we offer and guarantee your high-speed Internet access all the time at a price that is affordable. Most other services do not. In fact, it's right there in our contract agreement. While DSL (digital subscriber lines) and ISDN (integrated services digital network) connections transmit information over telephone lines at rates ranging from 32 Kbps, 128 Kbps, and much faster, these speeds are not provided to customers 24 hours a day.

That all depends upon the telephone companies offering both services. The two services are not the same -- ISDN provides two voice channels or a 128 Kbps data channel while DSL is predominantly a data pipe providing an asymmetrical bandwidth of up to 8 Mbps downstream and 1 Mbps upstream under good conditions. However, an DSL access network will be an overlay network and therefore will not require the expensive and time-consuming switch upgrades that held ISDN back for so long.

A DSL Modem is not a true modem (which stands for Modulator/DEModulator). It is actually a state-of-the-art all-digital device that communicates using 10BaseT network protocols and provides an "always on" connection to your ISP (Internet Service Provider). What this means is that you will be ready to "surf" the net as soon as you turn on your computer. It does not require an additional phone line, and you can use the Internet while talking on the phone.

The main difference between cable modem and DSL technology is the network underlying the service. DSL service uses the public telephone network for transmission while cable modems use a completely separate broadband, high-speed network. Telephone solutions tend to degrade and slow down the further away your home is from the telephone company's central office.

You can have either a dedicated analogue line or ISDN or ADSL as required there are small monthly charges for extra lines.

No. DSL and Wireless services give you greater "bang for the buck", and come in speeds up to 3.0M, but you may not be able to get DSL or Wireless at your location. We recommend ISDN for locations where DSL and Wireless are not available and T-1 is not needed or affordable.

DSL is even faster than ISDN. And DSL sends data and voice over the same line so you talk on the phone while you connect to the Internet.

Your ISDN line will not support both DSL and ISDN; this means that you must have one set of wires for each service. If you want to drop ISDN service in favour of DSL you can use the wires that were installed for the ISDN line. DSL needs a few important hardware items for it to correctly work. In order to separate your voice transmissions from data over the copper line you will need to install a simple and small splitter (available from us for $ 95.00).

option is now available in the order process to migrate your ISDN line to a normal phone line, if your line is DSL suitable. Something to consider is that your ISDN line will normally have two phone numbers and two lines attached to it. When downgraded, the second line and number will be lost ? make sure you check this out fully before ordering as it cannot be readily reversed. As there is an extra step or two involved, ISDN line to DSL orders may take slightly longer.

DSL will be the cause of ISDN's demise for several reasons: - ISDN is only available in two speeds: 64 Kbps and 128 Kbps, both of which are significantly slower than most DSL connections. - ISDN sometimes offers dedicated, always on access but not always. Furthermore, ISDN is subject to additional per-minutes fees in many locations. ISDN fees can easily be in the hundreds of dollars on a monthly basis. -ISP's will charge between $30-150 a month to provide Internet access to ISDN customers.

ISDN is only available in two speeds: 64 Kbps and 128 Kbps, both of which are significantly slower than most DSL connections. ISDN is subject to additional per-minute fees in many locations. ISDN fees can easily range into the hundreds of dollars on a monthly basis. Internet service providers often charge $30-$150 a month to provide Internet access to ISDN customers.

Sure, you could do that, but it's not a good idea for several reasons. First, a vast majority of ISPs won't let you legally use a residential cable modem or a DSL line to host a public server. You would have to get a more expensive business package. Second, ADSL and cable lines usually have lower upstream bandwidth than downstream bandwidth, so your site may appear to be sluggish under heavy traffic. Third, DSL and cable lines have a much lower reliability than dedicated T1 or better lines.

If you plan on connecting only one computer to your DSL connection, a DSL modem will simplify the installation procedure. Use a DSL router connected to an Ethernet switch or an Ethernet hub. Ethernet switches and hubs are often called network switches and hubs. Click here for an example. Use a DSL modem connected to a Cable/DSL router. Cable/DSL routers are basically Ethernet switches (or wireless gateways) with routing functionality built-in, but still lacking an actual ADSL port.