Panasonic KX-T336 System Reference Manual page 414

Location of DN buttons is specific to each model as follows.
KX-T123230, KX-T123230D, KX-T123235
MESSAGE
1
2
3
4
5
6
7
8
9
10
11
12
ICM
KX-T61630
CO1
CO2
CO3
CO4
CO5
CO6
ICM
MESSAGE
(Message
DN12
Waiting) Button
DN11
and Indicator
DN10
DN9
DN8
DN7 DN (Directory
Number)
DN6
Buttons and
DN5
Indicators
DN4
DN3
DN2
DN12
ICM (Intercom)
Button and
Indicator
DN6
DN5
DN (Directory
DN4
Number)
DN3
Buttons and
DN2
Indicators
DN1
ICM (Intercom)
Button and
Indicator
KX-T30830
11
12
13
14
15
16
17
18
CO1
CO2
CO3
ICM
4-A-6
DSS8
DSS7
DSS6
DSS (Direct
DSS5
Station Selection)
DSS4
Buttons and
DSS3
Indicators
DSS2
DSS1
DN3
DN (Directory
DN2
Number) Buttons
DN1
and Indicators
ICM (Intercom)
Button and
Indicator