Panasonic KX-TD816C User Manual page 350

DSS Console Features
KX-T7440
DSS Buttons with
Busy Lamp Field (BLF)(01 through 66)
Connection
Included telephone
line cord
350
KX-T7441
DSS Buttons with
Busy Lamp Field (BLF)(01 through 48)
ANSWER Button RELEASE Button
→ Connect to the Panasonic Digital
Super Hybrid System.
User Manual