Panasonic KX-TD500 Features Manual page 328

General Features
tone (dial tone 2) after going off-hook depending on System Programming <Section 2.8
System Option, "15. Special dial tone after setting feature" in the Programming Guide>.
Programming Guide References
• 2.3 Numbering Plan
– Absent Message Set / Cancel
• 2.8 System Option
– Special dial tone after setting feature
• 5.8 Absent Message
Features Guide References
None
User Manual References
• 3.2.8 [008] Absent Messages Set
• 4.3.1 Absent Message Capability
328 Features Guide