(Note: Prices are per NYNEX quotes in Portland, Maine area.)
PM3/PRI Alternative
-------------------
Price per port: $9500/23 = $413
Per Port NYNEX Install: $1900/23 = 83
----
Total One-Time cost per port: $496
Monthly NYNEX Cost per port: $1943/23 = $85
PM2/BRI Alternative
-------------------
Price per port: Current street for PM2e-30, $2000/30 = $67
US Robotics ISDN I-modem = 290
Per Port NYNEX Install: ISDN BRI 141
---
Total One-Time cost per port: $498
Monthly NYNEX Cost per port: ISDN BRI = $56 (no measured service
charge when hosting calls)
Conclusions
-----------
At 2/3 the ongoing monthly cost per "line", a PM2 equipped with USR
I-Modems can provide on each "line" ISDN connections to 115K or USR's
"x2 56K" connections. The "per port" one-time costs are about the same,
but the PM2/BRI approach allows speeds to 115kb on any single line,
while the PM3/PRI approach allows speeds to 128kb if 2 lines are used.
Another way of looking at it is: 128kb max speeds possible using
resources costing $170/month in the PM3/PRI approach compared to 115kb
max speeds using resources costing $56/month in the PM2/BRI approach.
Of course, the PM2/BRI approach outlined is not going to do a thing
for cleaning up the cable monster and piles of modems in the NOC.
The PM2/BRI approach outlined above also offers a scaleable approach with
far less required up front for the Mom & Pop ISP to start dabbling in
digital connection offerings.
- Jack
Jack Kilday * jkilday@nlis.net | Maine's Premier ISP & Oldest IBM BBS
Northern Lights Internet Services | * * Telnet to 'nlbbs.com 6000' * *
207-761-1991 * http://www.nlbbs.com | The Home of ZipNews -==- ftp.nlbbs.com