VDSL Demoed

coaxial writes "According to Techweb, STMicroelectronics and Telia Research AB demonstrated VDSL (Very-High-Bit-Rate DSL). Supposedly it will allow 60Mbps and be available by 2001. " I've heard rumours of demonstrations to be down at Comdex in couple weeks. Need to keep my eyes open for that.

Comments

Re:AGGH!

[Jordy]

What is a decent overcommit for high-speed users anyway? I've been hearing anywhere from 5:1 to 100:1 but nobody has good solid evidence one way or the next.

Nationwide the average ISP pays roughly $1000 per megabit for bandwidth to their upstream provider. There's additional costs involved in the circuit between the CO and the ISP, the circuit to their upstream provider, and tech support and what not.

But you can figure out for yourself roughly what the ISP needs to overcommit just to break even on bandwidth. 1.5 Mbps ADSL in Bell Atlantic territory averages about $40/month which means the ISP must overcommit 37.5:1 to break even on bandwidth.

Subtract roughly $5 per customer in tech support costs, 15% profit margin and it comes out to about 40:1 overcommit rate.

Of course that still doesn't include equipment, adminstrative costs, software development costs, management costs, etc.

It also doesn't take into account the 'free' outbound bandwidth which ADSL users can't use which you can use for web hosting and what not in attempt to recoup some money.

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