TopView uses modems and call-out devices for delivery of notification messages. Cellular modems/devices can be used for SMS/text notification, and call-out devices for Voice notification.
The following is a list of online vendors for some of our recommended devices. If you notice an errors in this list or would like us to add a vendor or device, please contact sales@exele.com
Yeastar TG200 LTE device (SMS and Voice calls over cellular)
VOIP Supply
Note: as of April 8, 2025 the TG200 (2 SIM support) is currently on backorder through VOIP Supply with estimated stock at the end of May 2025. One alternative device is the TG400 LTE (4 SIM support) TG400 LTE device at PC Liquidations