VTScada should work with any standard voice modem. Though we cannot guarantee the compatibility of third-party modems across all Windows operating systems, our engineers have provided the following comments on modems that they have used or have been used by our customers.
We provide this list simply as a place to start when researching modems. We have no relationship with these manufacturers. This list periodically changes.
- Multitech MT9234MU-CDC-XR – Built for industrial applications, this modem has high voice quality and DTMF detection is consistent. This brand has the most expensive options. Ensure model number does not contain ‘NV’ (no voice).
- US Robotics 5637 – The voice quality was good however of the two tested, one was hit-or-miss when detecting keypresses. This is the lowest cost option.
For more information, see the VTScada help file entitled, "Modem Configuration and Use."