Someone needs to flog the marketing people at Sprint ..
http://www.sprintbiz.com/ip/backbone.html
"Sprint's Internet backbone includes redundant equipment and diverse
routing to ensure the highest reliability. Leveraging Sprint's advanced
SONET network, we have specially engineered our network to take full
advantage of SONET reliabiliity. In addition, Sprint uses the Cisco Gigabit
Switch routers in its backbone, which translates into greater response time
and reliability for your users"
oops.