Beyond ISDN
Digital Subscriber Link (DSL)
- High-speed digital access offered by telephone companies over the ordinary local loop
- Requires equipment at telephone company switch
- User needs DSL modem (really, a DSU)
- 128 kbps to perhaps 8 Mbps downstream
- ISDN-like rates upstream are common
- Several versions: Asymmetric (ADSL), etc.
- Microsoft, Intel, Compaq, and others join Telcos
- Keep yourself informed: ADSL Forum