How does SENTRY block junk faxes.

When SENTRY is on, it only receives faxes from White Listed numbers. It blocks 100% of junk faxes. When you are expecting a incoming fax not on White List, you can turning off SENTRY temporarily. Just tap “Voice” button to see “OFF” on screen. Afterwards, you can add that fax number to your White List, so next time it will come in as usual