If you want to log on the the ZTE ZXDSL 831 ADSL modem to configure the modem settings, you will need a user name and password. Default factory password listed below can be used to login. If you are not given, or simply do not have, or have forgotten the user name and password, you can reset the modem by long-pressing the ‘reset’ button.
You can now try to log on to the modem by browsing to http://192.168.1.1/, and login with the following default factory password:
User ID: ADSL