Summary
SLAC has remote access requirements which must be met
- need to provide secure, fast access
- solution for local and distant users
ISDN good for local users but expensive for non-local
xDSL is becoming available but is still not standardized
xDSL is distance independent, fast
SLAC would save about $19K/year by moving its top users to xDSL
There are some risks: management costs, standards changing, possible over-subscription.