Panasonic KX-T336 System Reference Manual page 1050

Assigning Items
DSS Key (17 to 32) (cont.)
Number
Default
blank Three or four digits : directory number for "DSS(DN)"
One or two digits : intercom number for "DSS(ICM)"
Maximum 16 digits : destination number for
9-G-22
Selection of Value
"ONETOUCH"
Continued
Reference
3-B-7.01
4-C-4.01