D-Link KX-TDA100 Telephone User Manual


 
2.2 Installation of the Hybrid IP-PBX
Installation Manual 57
2.2.9 Attaching a Ferrite Core
A ferrite core must be attached when:
connecting T1, E1, PRI, BRI, IP-GW16, and IP-EXT16 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/IP-GW16/IP-EXT16 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.
5 cm
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.