Cannot send voice or SMS through Yeastar TG200L - common issues

Cannot send voice or SMS through Yeastar TG200L - common issues

Here's a wrap-up of common issues experienced when setting up the Yeastar for notifications through TopView.

Ensure you have the correct model

The TG200 device has a few models. Older models may not work with the latest 4G LTE carriers. There is a module/radio in the device that will tell you what is supported (2G/3G/4G). This information is only available through a terminal session to the device but is the best method to verify that the radio is LTE.

The 4G/LTE device is listed as model “TG200L” or “YST-TG200LTE-A”. The description should state that it supports 3G/4G/LTE. If the description does not say “supports LTE” then you should assume that it does not.

We do not sell this hardware, see our Yeastar configuration guide for purchasing options.

Try to send an SMS message from the TG200 web interface

If the SIM(s) used in the device support SMS, you can try to send a test message from the web interface to verify that the SIM is registered and working correctly.
  1. Log into the TG200 device using a web browser
  2. Select "SMS" from the top menu
  3. Select "Send SMS" from the left menu
    1. Destination: enter the phone number to send the SMS message to
    2. Port: select the SIM port to use
    3. Content: enter a test message
    4. Click [Send]
  4. Select "Outbox" from the left menu.
    Each sent message is listed along with status of the send attempt.

How to locate the IMEI number

The TG device has multiple cellular radios, one for each trunk/SIM. The IMEI number is unique number identifying the cellular radio. Your carrier may request the IMEI number of the device. You will need to give them the IMEI number of the trunk using the carrier’s SIM.

There are two methods to inspect the IMEI number. Go to STATUS > TRUNK STATUS. Then, either:
  1. Hover your mouse over the Trunk Name. A pop-up will display the IMEI number, or
  2. Click on the trunk, then the Advanced Settings tab. The IMEI number is displayed. 

Calls from TopView not connecting - Voice over LTE (VoLTE)

Voice calls on your mobile phone can use a traditional voice network or the cellular carrier’s LTE network (Voice over LTE). VoLTE will provide superior call quality as long as your LTE signal is strong.

If your calls are not reaching the connected state, try to enable or disable VoLTE for the SIM/radio.
Go to STATUS > TRUNK STATUS
Click on the Trunk (e.g., Trunk1) > Advanced Settings > Enable VoLTE
Most users will need to enable VoLTE
You should reboot the Yeastar device after changing this setting

Voice calls failing due to voicemail box not being set up - AT&T/FirstNet

Many users report failing voice calls when setting up devices with SIM cards from AT&T/FirstNet.
Reason: If voicemail is active for the account, voicemail needs to be set up before calls can be made.
Another option is removing voicemail support from the account.
You may need to put the SIM card into a phone to set up voicemail.


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