We have a site with a quirky FRelay burst pattern. Although they burst very rarely, the uers seem to all be all too aware of the times when it is happening. Our usage numbers dont justify bumping up their CIR so I've been investigating alternatives. I was wondering if anyone out there uses ISDN backup to provide more bandwith when the FRelay circuits get saturated. This seems like it might be a good solution since it could help out during episodes of bursting. But is it practical financially? How much more expensive if an ISDN connection than a Frame Relay....at 128k CIR? This particular site would be calling from Boston to Santa Clara. Any insights, comments, etc are greatly appreciated. If I get enough responses, I'll post a summary. **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]