We have an IPO 500 at 4.1.15 - will move to 5.0 when needed for this project. We have several off-site locations that we need to provide analog service to, for fax lines, SLP's and analog trunks into older PBX's (Avaya Partner). Can we do this with SIP and or VoIP endpoints? Has anyone had success doing something like this? What endpoints did you use? Also, we do not want to have a bank of FXS equipment at the IP Office location, just analog terminal equipment at the distant end. Thanks!