Scroll to Yes, then press Select.
NOTES ABOUT TTY/TDD CALLS
The Nokia TTY/TDD Adapter (HDA-9) is for use with compatible
TTY/TDD devices only. Check with the manufacturer of the TTY/TDD
device to ensure that the connection is compatible.
Check with the manufacturer of the TTY/TDD device for the
TTY/TDD communications depend on network availability. Check with
your service provider for availability and description of services.