-----BEGIN PGP SIGNED MESSAGE----- Getting to something more operational, we've been deploying DSL here and there in onesies and twosies (well, even a dozen) alongside the dialup POPs, and not bothering a lot about adding more capacity. I've been keeping the number of modems to about 8 customers per modem, and 200 modems per T1 (roughly 8 per 56K channel), just as a rule of thumb. In our experience, this keeps the dialin lines busy at no more than 20 minutes per day at peak, and the T1s average 70% utilization at peak. Customers seem reasonably happy. We just got a bid on DSL service saying they provision at 200 DSL per T1. That seems awfully high to me, since DSL potentially runs a lot more traffic than 56Kbps modems. I was planning at 24 per T1. Who's right? We don't have enough aggregate experience with DSL, even though we've been offering it for about a year now. Individually, the chicken plant (our first installation), car parts factory, jeans factory, bookstores, etc, don't give a very consistent usage pattern. Any of the bigger folks have a rule of thumb? -----BEGIN PGP SIGNATURE----- Version: PGPfreeware 7.0.3 for non-commercial use <http://www.pgp.com> iQCVAwUBOq7NtNm/qMj6R+sxAQEAfQP/VsU6X6lJ8HbAFw4N73ThML5jXDvCZE6G AfO12mLxSWNyigxGkkf/nvsDWVFFnoMgs2v+yIxm/l+ec11i3EG3P3x0efYAyAX6 Xet28KyNx335kkT+WI1dz06nVfeWqUlldS+lgQPgODV8KlJms6T8fbkCT09As3t3 cORbWFxG6mw= =Nqoi -----END PGP SIGNATURE-----
> We just got a bid on DSL service saying they provision at 200 DSL per > T1. That seems awfully high to me, since DSL potentially runs a lot > more traffic than 56Kbps modems. I was planning at 24 per T1. This was hashed out on the ISP/C mailing list about a month ago. Most providers are putting in between 200 and 250 DSL users per T1 of outbound bandwidth. Think about it: $2K/200 is $10/user/month of bandwidth. $2K/24 is $85/user/month of bandwidth. If you're selling your DSL lines for $300-$400/month, it's fine to give people $85 of bandwidth, but if your DSL costs the same as everybody else who's losing money on it, you need to keep that cost down in the $8-$10 range. -Bill
On Tue, Mar 13, 2001 at 08:49:10PM -0500, William Allen Simpson wrote:
We just got a bid on DSL service saying they provision at 200 DSL per T1. That seems awfully high to me, since DSL potentially runs a lot more traffic than 56Kbps modems. I was planning at 24 per T1.
At 24 per T1, how are you going to make any money?
participants (3)
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Bill Woodcock
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Shawn McMahon
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William Allen Simpson