Panasonic KX-TD816 Programming Manual page 225

To change the current entry, press STORE and the new selection.
6.
To programme another bit, repeat steps 4 and 5.
7.
Press STORE.
8.
To programme another COS, press SELECT and the desired COS number.
9.
Repeat steps 4 through 8.
10.
Press END.
Conditions
None
Features Guide References
Call Forwarding
Class of Service (COS)
General Programming
2.9 Optional Programming
225