SDSL stands for Symmetrical Digital Subscriber Line and it runs at the same speed in both directions and is capable of much higher speeds than IDSL or most of the other DSL variants. Larson said IDSL makes a great solution for a business because it is a dedicated circuit that is always connected so it never gets a busy signal from a modem bank. SDSL is similar to IDSL, but is much faster. It also costs more to install. He said SDSL is great for businesses that have many users that need to have Internet access.
Wireless speeds vary, depending on how many people are using it at the same time.
It will run as fast as 140 kbps, but will average about 20-30 kbps during peak usage times, Larson said. Couch also said that rainfall could interfere, depending on the density of the rain. Larson said the wireless can potentially run over longer distances than any of the DSLs, depending on the equipment being used. Under ideal conditions and with extra equipment, their company has had wireless running at distances of up to 12 miles. Several others are already using either the ISDN or DSL connections.