Due to the non-standard ways in which different brands of voice modem interact with Windows Operating Systems, Trihedral has created a How-to guide to help VTS developers select, install and replace these devices.
These procedures are intended only for those with high-level skills in VTS and Windows operating systems. Proper modem installation and configuration can be difficult and time consuming. If you experience difficulties during this process, you should contact Trihedral Technical Support (1-800-463-2783) right away.
This guide is available from the VTScada software Internet forum.
www.trihedral.com/forum/showthread.php?95-Voice-Modem-Installation-and-Removal-Procedure-VTS-Alarm-Dialer