Follow the instructions in your device manual to access your Grandstream's Web Interface menus.
To configure your Grandstream you'll need your SIPID and SIP Password.
Open the Profile menu to enter your sipgate account SIP Credentials:
Please check for the latest firmware upgrade for your Grandstream at: http://www.grandstream.com/support/firmware
Testing your Phone's setup:
To test your phone's configuration, please dial the following sipgate numbers:
Using Multiple Phones Behind the Same Router:
If there's more than one VoIP phone/device on the same local network, assigning each different local UDP ports will avoid port conflicts.
For each SIP Phone or device you add, increment the local ports used by 100.