Hello dvonjr

                    If you are using the gateway which is the combination of modem and router or  for the separate router you can access respective interface or GUI to change the default SSID/ Wi-Fi name. It is possible. If you could help us with the modem model number we can provide you the respective article to customize your Wi-Fi setup or you can also reach out to arris.com/consumersupport for any information.

Let us know if this helps