Attaching a Ferrite Core
A ferrite core must be attached when:
connecting T1, E1, PRI, and BRI cards using an RJ45 connector (except in Canada,
where the ferrite core is not necessarily required), or
connecting extension cards using an Amphenol connector.
The ferrite core is included with the card.
When connecting a T1/E1/PRI card
Wrap the cable once around the ferrite core, then close the case of the ferrite core. Attach the
ferrite core 5 cm away from the connector.
When connecting a BRI card
Attach the ferrite core, then close the case of the ferrite core. Attach the ferrite core as close to
the card's connector as possible.
2.2 Installation of the Hybrid IP-PBX — KX-TDA100/KX-TDA200
When only 1 or 2 cables are used for connection, wrap the
cable(s) once around the ferrite core.
When 3 or 4 cables are used for connection, simply pass the
cables through the ferrite core.