on Visionet Modem M625N Installation Guide
ADSL/VDSL connection, connect the DSL "Phone Cable" to the DSL
Wi-Fi Set up Procedures
Type 192.168.5.1 in your web browser.
SSID ends with the last 6 digits
of the Gateway Serial Number
To change wireless password, look for the WiFi option,
then click on SSID below.
Security Key Matches the
Gateway Primary LAN MAC Address
To change wireless password click Security on the left
below SSID and change the WPA/WAPI passphrase
from the Primary LAN MAC Address
(i.e., F45FF72A568E) to what you want it to be.