Jon Stanley wrote: In my view of the world, a burstable circuit is defined as one where the customer can send us as much data as they would like (for example, an entire DS3's worth on a consistent basis), and we would bill them for usage above the contracted amount via some method (we use 90th percentile reporting) In someone else's view inside the company, the customer should be prohibited from sending above the contracted rate for any extended period of time by policing at the ATM layer. Both views are viable, but I believe (nearly religously) that the former view is correct. ------ The largest ISP with which I'm familiar uses your definition for burstable, and your co-worker's definition for a "tiered" circuit. IMO it's sales, rather than engineering. -David Barak "Quis custodes ipsos custodiet?" - Juvenal __________________________________________________ Do You Yahoo!? Make international calls for as low as $.04/minute with Yahoo! Messenger http://phonecard.yahoo.com/