Fast T1
If you want a fast internet connection, you should keep in mind getting a T1 line. This might mean getting a T1 cable and even a t1 card. A T1 line operates much like any other high-speed connection, and will connect into your LAN via a router just as a cable modem would. Most of the time a special router is needed to connect via cable, and then you can take that into another router that will feed all of your machines in the network. You should be able to wire it right into your main router and have connectivity. You can keep your cable connected separately if you desire.
You should be aware of not connecting any of the devices. Therefore, T1 should come in and hit your router and then go out to the machines you want on your T1, and cable should come in through the cable modem and connect to your other machine that way.
In addition, you should make sure that whoever is installing your T1 does a good job and make sure that when they are finished, what you have left is a port in the wall that you can simply plug your router into with a t1 cable, and your life should be simple. Also, you may or may not have to configure static IP addresses into the router for it to work, so be sure to ask them if they support DHCP.
The vast majority of vendors will either provide the equipment for free, or tie them into the monthly pricing. Certain setup fees may also be waived based on the length of a contract. Reliability becomes critical when customers or employees depend on your connection for immediate responses.
If your customers use your connection to access your databases or your server or the internet then reliability of your connection is critical. If your employees depend on your connections because you host the e-mail server in house or host web servers, your connections is considered critical.
A critical connection can be viewed much like a life line, without which your business would be negatively impacted. Your monthly savings of having a sub-par connections will not make up for the loss in productivity of your employees or loss of customers when your DSL connections gets bogged down or cut off.
Several customers are extremely price sensitive and cannot afford the cost of a T1, which can be much more expensive than a full T1 connection. Consequently, there is a finite amount of bandwidth available and a customers speed can drop if other customers in the neighborhood decide to use their service. SDSL is a business class DSL and is ranked as a higher priority than residential DSL or ADSL.
Therefore, it is not oversubscribed to the extent than ADSL and is subject to fewer bandwidth restrictions. In short, if price is your critical factor go with DSL. Customers at home who are most sensitive to price should not consider a T1 circuit unless then have a business reason to pay for such a circuit and cannot access DSL service.

