Panasonic KX-TD816 Programming Manual page 348

4.3 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 selection, press the
the contents programmed for Jack 01.
Features Guide References
E1 Line Service
348
key in step 3. In this case, the display shows
E1 Programming