You can access AT&T router settings and configure the device according to your requirements. Before accessing the settings, you must be aware and know some of the details to log in. The router IP addresses its username and password, since it would be set according to the default credentials. The following is the process to reset AT&T router remotely.
Steps to remotely reboot the router:
Open the web browser and type 192.168.1.254 in the URL section.
The AT&T login page would open up and you would require entering the default credentials, if not changed.
Depending on the model you are currently using there should be an option to “restart your system” in the home page
Select restart and your device should begin to reboot.
Read more: at&t router access code