Panasonic KX-TES824 Installation Manual page 56

2.5 Connecting Extensions
SLT
PT (such as KX-T7735)
DSS Console
Note
If a telephone or answering machine with an A-A1 relay is connected to the PBX, set the A-A1
relay switch on the telephone or answering machine to the "OFF" position.
56 Installation Manual
Telephone Wiring
1-pair wire (T, R)
2-pair wire (T, R, H, L)
1-pair wire (H, L)