Panasonic KX-TD816 Manual De Usuario

Descargar
Página de 388
Station Features and Operation (DPT/SLT)
110
User Manual
Conditions
If you do not answer the recall ringing within 10 seconds (four callback ring signals), this 
feature will be automatically canceled.
If the called party becomes busy again after the callback ringing starts, the ringing stops but 
this feature will be executed again when the extension becomes free.
With the KX-T7431, KX-T7433, KX-T7436 or KX-T7235, you can set and cancel this 
feature using the display operation.
<ISDN Telephone>
This feature is not available for ISDN telephones.
User Manual References