Modems and Call-out devices
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.
Recommended/Supported devices
Learn more about our recommended devices and configuration details:
- Recommended cellular modems/devices for SMS Notification
- Recommended phone call devices for Voice Notification
Where to buy
Where to buy devices online
Yeastar customers: please see the link to the recommended vendor to ensure you get the LTE device
TAPI: TopView no longer supports TAPI for voice calls. Existing TAPI users can access our TAPI information page
Quick links
- Voice notification:
- Grandstream UCM6200/6300 configuration document (VOIP to analog line)
- Yeastar TG200L configuration document (also supports SMS in v6.37 and later)
Note: Verizon SIMs are not supported by this device - Using a hosted VOIP provider (Twilio, SIP.US, and others)
- Softphones (VOIP and VOIP/SIP Instant Message):
- SMS notification:
- MultiTech rCell 100 configuration document
- Yeastar TG200L configuration document (SMS in v6.37 and later, also supports VOIP to cellular)
Note: Verizon SIMs are not supported by this device
- Use Twilio to send SMS messages (supported in v6.33 and later)
- Free email-to-text is no longer supported by carriers!
Device and feature comparison
| Modem | Carrier support | Notifications |
| MultiTech rCell 100 | Wide support for US, Canada, and International carriers | SMS |
| Yeastar | Wide support for US, Canada, and International carriers
Note: does not support Verizon |
SMS + Voice |
| Sierra Wireless (Semtech) | Wide support for US, Canada, and International Carriers Supported carriersSupported models: LX40, RV55, (LX60 & MP70 should also work but have not been tested in-house)Pending release – early 2026 |
SMS |
| Grandstream | POTS line | Voice |
Ready to get started?
Contact Exele today or download a free trial version of TopView