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.

Learn more about our recommended devices and configuration details:

Where to buy devices online

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)
- Using a hosted VOIP provider (Twilio, SIP.US, and others)
- Softphones (VOIP and VOIP/SIP Instant Message):
  - Windows: Configure MicroSIP softphone for Windows
  - Mobile: Configure Linphone softphone for Android and iOS
- VOIP Server Connection issues: run the firewall checker
SMS notification:
- MultiTech rCell 100 configuration document
- Yeastar TG200L configuration document (SMS in v6.37 and later, also supports VOIP to cellular)
- Use Twilio to send SMS messages (supported in v6.33 and later)
- How will the end of 3G affect your TopView cellular modem?
  - AT&T users may experience a disruption to service when AT&T ends 3G support in early 2022 and should apply firmware 5.3.5 or later
    - October 2021: PCN for firmware 5.3.5 which will fix the issue for MTR-LAT1 and MTR-LNA7
    - March 2021: PCNs that describe the issue with manual instructions for fix (prior to firmware 5.3.5 release)
      - Model MTR-LAT1
      - Model MTR-LNA7

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