Panasonic KX-TDA50 Installation Manual page 44

2.2 Installation of the Hybrid IP-PBX
4.
Stick an appropriate optional card label (included) to the left side of the corresponding
card.
5.
Connect a cable to an appropriate port of the card.
For details about pin assignments, refer to the appropriate section in "2.3 Installation of
the CO Line Cards" and "2.4 Installation of the Extension Cards".
Note
Make sure to connect cables after installing the card in the Hybrid IP-PBX, not before.
44 Installation Manual
Optional Card Label