Calix web-based management interface allows you to change Wi-Fi password, Network Name (SSID), and default router settings at http://192.168.1.1.
How to login to Calix router?
- Open a browser and type http://192.168.1.1 in the address bar.
 - Enter the Username: admin and Password and click Login.

 - You will be logged in to the Calix router settings.
 
Note: The Router IP Address, Username, and Password are printed on a sticker on the back of the router.

How to change Calix Wi-Fi Password and Network Name?
Select your router:
Calix GigaSpire BLAST u4
- Log in to the router’s settings page.
 - Select Wi-Fi > Primary Network.

 - Enter the Wi-Fi Network Name in the SSID field.
 - Enter the Wi-Fi Password in the Password (Security Key) field.
 - Click Apply.
 
Calix 844G-2 GigaCenter
- Log in to the router’s settings page.
 - Select Wireless > 2.4G Network > SSID Setup.

 - Enter the Wi-Fi Network Name in the Rename SSID field and click Apply.
 - Select Wireless > 2.4G Network > Security.

 - Enter the Wi-Fi Password in the Use Custom Security Key field and click Apply.