You can adjust the ring count on your phone before built in answering machine picks up.
On the Handset
Examples of Menu Button Location
When “Toll saver” is selected, the unit’s answering system answers at the end of 2nd ring when new messages have been recorded, or at the end of the 5th ring when there are no new messages. If you call your phone from outside to listen to new messages, you know that there are no new messages when the phone rings for the 3rd time. You can then hang up without being charged for the call.
Example of programming, model in video KX-TGD59x series buttons and displays vary by model.