DWR-921 4G LTE Router
User Manual
Configuring via Web-based Interface
5. On the VoIP page, select the Is an IP phone connected to the device checkbox. 
Figure 50. The page for selecting a LAN port to connect a VoIP phone.
6. Select a free LAN port for connecting your IP phone.
7. If the VoIP service is provided via a VLAN channel, select the  Use VLAN ID checkbox
and fill in the VLAN ID field.
8. Click the NEXT button to continue or click the BACK button to specify other settings.
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