All previous versions of NetWaiting were problematic with my Broadxent V.92 PCI Modem (HSF) running on Windows 98. I believe this was the last version written that works with Windows 98.
VERY hard to find!
This is the best Modem-on-Hold utility I have yet found. Vendor, subvendors, subsubvendors all disagree about who should support this so none of them do. (BVRP, Broadxent, Creative, Conexant).
Last version that works with Windows 98. There are later versions of NetWaiting for later Windows versions.