Panasonic KX-TD816 User Manual page 245

<PT>
• With the KX-T7431, KX-T7433, KX-T7436, or KX-T7235, you can execute this feature
using the display operation.
<ISDN Telephone>
• This feature is not available for ISDN telephones.
Feature Guide References
EXtra Device Port (XDP)
User Manual References
4.3.3 Alternate Calling — Ring / Voice
4.3.50 Hands-free Answerback [PT only]
4.5.9 KX-T7235 Display Features - System Feature Access Menu
4.5.12 KX-T7431 / KX-T7433 / KX-T7436 Display Features - System Feature Access Menu
User Manual
Station Features and Operation (DPT/SLT)
245