Configuring GrandStream HandyTone 386 for 3CX Phone System

Follow these steps to set up a GrandStream HandyTone 386 VoIP ATA with 3CX Phone System:

  1. Connect the device’s LAN port to your computer with a straight network cable.
  2. The device is preconfigured with IP Address 192.168.2.1. Configure your computer to have static IP Address 192.168.2.10, with subnet mask 255.255.255.0.
  3. Launch a browser and go to http://192.168.2.1. The default username is “Admin”.



  4. Select the “Basic settings” tab.
  5. If your network has a DHCP Server, then select the radio button labeled “dynamically assigned via DHCP”.
  6. If your network does NOT have a DHCP Server, then set up static IP Addressing. From this point onwards, we will assume that the IP Address of the 3CX PBX Server on the network is 10.172.0.2, the IP Address of the device will be 10.172.0.225, the IP Address of the default gateway is 10.172.0.253, and the IP Address of the DNS Server for the subnet is 10.172.0.1.
  7. Scroll to the bottom of the page and click the “Update” button. You will be prompted to reboot the device. Click the “Reboot” button. After the device has finished rebooting, you may consult the DHCP Server’s administrative tools to retrieve the device’s new IP Address.
  8. Now that you have access to the web configuration you can start configuring it against the 3CX Phone System. Launch a browser and point it to device’s new IP Address.
  9. Ensure that you have already created the extension in 3CX Phone System. Take note of the Authentication ID field and the Authentication password that you have entered for the extension connected to the ATA device.



  10. Go to “FXS PORT 1” tab.
  11. Set the “SIP Server” field to the IP Address or FQDN of the server on which 3CX Phone System is installed – in this example 10.172.0.2.
  12. Set the “Outbound Proxy” field to the same value as in step 13 above.
  13. The “SIP User ID” field should match the “Extension Number” field of the extension created for this phone in the 3CX Phone System Management Console.
  14. In the “Authenticate ID” and “Authenticate Password” fields enter the ID and Password that you entered for the extension in the 3CX Phone System Management Console. These fields must match the Authentication ID and Password set for that extension in the 3CX Phone System Management Console.
  15. The “Name” field is optional. A suitable value would be the name of the user using this phone.
  16. Set “User ID is phone number” to “Yes”
  17. Set “Sip Registration” to “Yes”
  18. Set “Unregister on Reboot” to “Yes”
  19. Set the “Register Expiration” field to a suitable value. For testing purposes you may want to use 60 seconds, but once the configuration is tested a larger value would be more appropriate to limit unnecessary network traffic. A good setting for general use could be 3600 seconds (1 hour).
  20. Enable “Send DTMF” to “in audio” and “Via RTP (RFC 2833)”. SIP info is not recommended although 3CX Phone System can support it.
  21. Set “Enable Call Features” to “Yes”. This setting enables features like transfer, on hold etc from the analog phone connected to the FXS port of the device.
  22. Set the “Preferred Vocoder” to choice 1: PCMU, choice 2: PCMA. The settings for choices 3 to 6 will not come in use since they will not be used by 3CX Phone System.
  23. Set “Allow outgoing call without Registration” to yes.
  24. Scroll to the bottom of the page and click the “Update” button. You will be prompted to reboot the device. Click the “Reboot” button.
  25. Repeat steps 11-24 for the configuring “FXS port 2”.
  26. After the HandyTone has restarted, switch to the 3CX Phone System Management Console, and click on the Phone System -> “Line Status” (the default page). In the section “Extensions”, your new extension(s) connected to the PBX should be listed with a green status light.

SIP Phone Configuration Guides