Hello everyone, I have a Zhone modem from terranet.
1.Default IP address: 192.168.1.1
2.Default Username: admin
3.Default Password: admin

I always used to login using these parameters without problems. 2 days ago, the username and pass stopped working. Called terranet, they said that they can't help me. Is there anything i can do aside from resetting.

Thanks in advance.
Try using a different browser and clear all your browsers Cache and Cookies.
Also try setting an IP like this :

Then try to log in again.
Hope I helped :)
try to telnet it, run >> telnet [192.168.1.1] it works for thompson routers, maybe it is the same issue!
@ AvoK95 Thanks for your reply. This might work if you are not able to connect to your modem. I can connect to my modem, but it isn't accepting the username and password anymore. However, i tried your way, didn't work. I also tried the L # also nothing.

@ khalil13 looks like Zhone, my modem does not accept that. Didn't work. Thanks for you help.
Try:
Username : User
Password : <blank>