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3.5 Information about the Physical Trunk Cards
Installation Manual 109
3.5.10 PRI23 Card (KX-TDA0290)
Function
1-port ISDN Primary Rate Interface card (23B channels). NI (North American standard ISDN protocol)
compliant.
Accessories and User-supplied Items
Accessories (included): Ferrite core × 1
User-supplied (not included): RJ45 connector
Notes
• 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 "3.2.9 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 "3.15.1 Starting the
PBX".
CAUTION
PRI ports are SELV ports and should only be connected to SELV services.
Switch Settings
Switch Type Usage and Status Definition
A/B Slide Select A (default) for trunk or B for extension use.
LEDs
RJ45
To NT1/
Extension
AB