Configure Grand Stream 502 SIP Trunk with DIDFOrSale SIP Trunking Service. Before you start configuring the Device, lets create a SIP Account at DIDForSale for this device to register.
Default Admin password is Admin. In this example we are configuring FXS Port 1. Enter the Domain, username and password. PS: Use the SIP Server, SIP UserID and Password from your account.
Click on Update.
Now you should be able to receive and make calls from this account.
PS: Configure the phone number in your account portal at http://portal.didforsale.com to start receiving calls on this device.