The t-zones setting is correct except the proxy.

The proxy is set to aaa.bbb.ccc.050, which should be fine, but due to some bug, doesn't work. It needs to be aaa.bbb.ccc.50 -- leading zeroes break something.

You might also set the https proxy to the same settings.

The default dial number works fine here, so unless you've got some strange setup with more than one data account, you can leave it alone.