The Hipath manuals seem to cover all manner of connection for SIP trunking to other Siemens systems but I find nothing that details SIP trunking to the public network. I have a few customers who are eager to convert to this for $$ savings. Is there some secret documentation out there any where that covers the basics for installing this and troubleshooting issues as I am sure there will be when trying to bring one of these into operation. I am sure Siemens training offers some insight into this but sadly that is not an option for me. Thanks for any info or reference.