Hello everyone, I apologize for putting this out to everyone, but I don't know the answer to this question and I feel it's best to go to the source. My company is forcing me to do a Frame vs. ATM cost-benefit comparison. The Frame-Relay connection would be PVC's connecting 3 sites, Chicago, West-Coast, East-cost (offices). I am attempting to do video-on-demand, voice-over-IP, and data over these pipes, and would like to ability to do Internet+private LAN connecting all 3 sites for file-sharing, email sharing, etc without having to do VPN over the Internet. My question? What is the benefit of Frame-Relay from say, Sprint or AT&T versus an ATM connection for all 3 sites from Savvis or Broadwing? I'm trying to find the technical details and merits behind both these methods/technologies. Any replies would be appreciated off-list, and I will send a aggregate report to anyone interested. Thank you much everyone for answers in advance, Ralph M. Los Asst. Vice-President, Internet Systems and Security EnvestNet Advisory Corp. rlos@envestnet.com (312) 827-3945 (direct) (312) 296-9003 (wireless w/voicemail)