Panasonic KX- TG2583B Operating Instructions Manual page 65

ANSWERING
SYSTEM OFF
Turning on the answering system
Call your unit and wait for 15 rings
options
turning on the answering system using a rotary or pulse service telephone,
you cannot enter the remote code for other options
Skipping the greeting message
After calling your unit, press @ during the greeting message
message after the long beep
calls until turned on again