Configure Cellular Network on 4G Module

Set your 4G module to cellular network and set the module mode to Voice and Data.

Note that Yeastar S-Series VoIP PBX V4.0 does not support the Cellular Network feature.
  1. Check if your 4G module is installed in the correct slot:
    • S412 Lite: Slot3
    • S412: Slot3
    • S20: Slot1
    • S50: Slot1
    • S100: Slot1 on Expand Board1
    • S300: Slot1 on Expand Board1
  2. Log in the PBX web interface, go to Settings > PBX > Trunks, edit your 4G trunk.
    • Mode: Select Voice and Data.
    • Network Type: Select the network type according the network environment of the PBX.

      For example, if the 4G network is better than 3G network in the PBX location, select LTE Only.

  3. Click Save, reboot the PBX to take effect.