We need to get the UL-1950 spec. certification for one of our products. We are in the process of purchassing the specs but it would be greatly apreciated if meanwhile anyone of you could give us some information on what design rules to follow on the pcb (spacing needed for ring voltage, ring start, -48v, etc.). Again, we appreciatte all the help. Thanks. Stephan Renaud Product Designer --------------------------------------------------------------------------------- DesignerCouncil Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF DesignerCouncil. To set a vacation stop for delivery of DesignerCouncil send: SET DesignerCouncil NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------