Call waiting options
Help
If your phone line has call waiting and you want to receive calls, choose Accept calls and then choose Adjust Sensitivity.

If your line has call waiting but you don't want WebTV Plus to be interrupted, choose Block calls.

My phone line does not have call waiting.
Accept calls
Disconnect if a call comes in.
Block calls
Shut off call waiting when connecting to WebTV, using this prefix:
example: *70,