Panasonic KX-TDA600 Installation Manual page 218

2.10 Connection of DECT Portable Stations
For the KX-TDA0142CE User only:
3.
Wrap the cable once around the ferrite core. Then close the case of the ferrite core.
To CSIF card
Note
If you need to open the ferrite core, use a flathead screwdriver to unlatch the case of the ferrite core.
218 Installation Manual
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