Panasonic KX-TD816 Programming Manual page 246

2.7 Extension Programming
• For an explanation of jack numbering, see "Rotation of jack number" in Section
1.3 Programming Methods.
• To assign all jacks to one extension group, press the
shows the contents programmed for Jack 01.
Features Guide References
Call Pickup
Extension Group
Paging
Station Hunting
246
key in step 3. In this case, the display
General Programming