Antel Uruguay installs the ZTE F660 router on every Fibra Optica Internet access (as far as we know!). The user and password provided with the router (user/user) will just give you an access of about 5% of the routers menu. This is enough for most people, but if you want to access special functions, you need full administration rights. That's why we've collected some of the user credentials for the F660. - Actual link to the Antel Hardware Support page. (02.2017)
Standard IP: 192.168.1.1
For only Port-Forwarding please use this data
Superadmin access to all menu items
This works for me, or try one of these:
Here you can see an excerpt of the menu structure of the complete menu with admin rights. So you may be able to find a function you are looking for.
There is also a voip item, but we didn't test it so far.