Panasonic KX-TDA30 Features Manual page 42

1.1 Incoming Call Features
PT Programming Manual References
None
Feature Guide References
1.7.4 Second Call Notification to Busy Extension
1.17.2 Incoming Call Log
1.25.1 Station Message Detail Recording (SMDR)
User Manual References
1.4.4 Answering Call Waiting
1.7.3 Receiving Call Waiting (Call Waiting/Off-hook Call Announcement [OHCA]/Whisper OHCA)
3.1.2 Settings on the Programming Mode
42 Feature Guide