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.

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.

Most telephone lines in your home will be analog lines which are safe for amplified phones and ring signalers. However, if you are using an ISDN line for your internet connection, do not use any assistive device on this line. ISDN is a digital technology and may damage your assistive equipment. If you have DSL service for your internet connection, this is analog technology and is safe for use with assistive equipment.

The system should not influence a DSL or ISDN at all. Because the internet traffic is on a different frequency, it is not perceived by the phone as being a phone call.

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.

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"

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).

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 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.

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

We have ISDN connectivity available through the dialup service. An ISDN line is just like an external phone line and is not part of the campus network. You need to contact the Telecoms Team who will discuss your needs and arrange for installation.

While this is a matter of choice, an ISDN line can serve as the only phone line to your home and business -- if you have a backup power supply (as mentioned above) in the event of a power failure. You may want to keep your existing lines and add ISDN for specific purposes that cannot be accommodated by your present line (e.g., higher transmission speed).

Single Line ISDN Service (SLS) is a platform based switched digital service offering fast, flexible, highly reliable, and digitally clear connections with the simplicity of dialing a telephone. Based upon international communications standards, ISDN provides users access to the powerful capabilities of today's Public Telephone Network for communicating across town, or around the world.

These are two completely different services. DSL is a dedicated connection usually to an Internet service provider (ISP) while ISDN is by definition switched. An example of when ISDN would be appropriate would be for video conferencing to different locations at different times. Another example would be if the addition phone line is more valuable to your or your business than only intermittent use of the higher speeds. TOP Your computer will connect to the DSL modem via Ethernet.

Yes. If the service is available in your area, you can cancel the ISDN line and use the same wire for DSL.

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.