In-Reply-To: <[log in to unmask]> re. ISDN versus PSTN A techie colleague reliably informs me that just one of reasons for using Windows NT version 4 (which it looks new Gpass will do) is that it can send data along two PSTN lines at once, thereby effectively doubling speed. Useless Fact # 43? Alan Hyslop Computing & IT Strategy Management Executive, NHS in Scotland. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%