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To: Dan S. who wrote (1621)	7/21/1998 8:37:00 AM
From: MikeM54321	Read Replies (1) \| Respond to of 12823

"Our wireless service has a guaranteed bandwidth AT ANY GIVEN TIME of 1.5 Mbps but it is definitely a shared bandwidth. Can you expand on this.... thanks. BTW: Our system is wireless MMDS." Dan, Can you tell us what system you are on? And how does weather effect it? You must be located in a bigger city for MMDS service. Is this correct? And the uplink on your MMDS system is the telephone, right? Thanks, MikeM(From Florida)

To: Dan S. who wrote (1621)	7/21/1998 9:04:00 AM
From: Frank A. Coluccio	Respond to of 12823

Dan, that was a good observation, although it needs some further definition. It 'could' support the stipulated speeds at, or near, 1.5 Mbps, let's say, on the loop side. But a problem with this picture could come into focus on a statistical basis, if the combination of CPE-loop-edge-WAN (Internet) resources are not tuned properly. If the loop activity is sufficient to overwhelm the high speed side of the DSL access multiplexer (DSLAM) facing the routers, say, (AND/OR) if the router resources and the uplink to the Internet are not adequate, there will undoubtedly be contention on the ports facing the Internet side (next tier up the Internet chain), which could present throttling on the low speed DSL side. This would have the effect of reducing the realized throughput levels on the loop, itslef, and therefore the premises CPE. ( CPE = Customer Premises equipment.) So, while the argument in favor of DSL does hold true on the access portion of the equation, alone, it still depends on network tuning and actual traffic loading for it to be realized. HTH, and Regards, Frank C.

To: Dan S. who wrote (1621)	7/21/1998 1:36:00 PM
From: DenverTechie	Respond to of 12823

Dan - I will refer you to Frank's response 1623, which deals with some of the network issues that come into play. Yes, the 1.5 Mb/s is dedicated and guaranteed for ADSL, but because of the cost to provide the Internet backbone connections to support multiple dedicated T1s to the customers, this access is usually not offered to individual home subscribers (but it fairly typical for business customers). If you look at offerings like from US West, their speeds for residential use are much lower than 1.5 Mb/s, like 64 kb/s, 384 kb/s.