2.4 Installation of the Trunk Cards — KX-TDA100/KX-TDA200
2.4.10 PRI23 Card
1-port ISDN Primary Rate Interface card (23B channels). NI (North American standard ISDN
To NT1/ Extension
Accessory and User-supplied Items
Accessory (included): Ferrite core × 1
User-supplied (not included): RJ45 connector
When connecting this optional service card to the trunk, connect through an NT1; do
not connect to the U interface of the trunk directly.
When connecting the RJ45 connector, attach the included ferrite core (except in
Canada, where the ferrite core is not necessarily required). Refer to "2.2.9 Attaching
a Ferrite Core".
This optional service card can be used for either trunk or extension connection, by
setting the A/B switch or using the connector with appropriate pin assignments.
To confirm the trunk connection, refer to "Confirming the Trunk Connection" in "2.13.1
Starting the Hybrid IP-PBX".
PRI ports are SELV ports and should only be connected to SELV services.
Usage and Status Definition
Select A (default) for trunk or B for extension use.