2.4 Installation of the Trunk Cards
2.4.9
PRI23 Card
Function
1-port ISDN Primary Rate Interface card (23B channels). NI (North American standard ISDN
protocol) compliant.
To NT1/ Extension
Accessory and User-supplied Items
Accessory (included): ferrite core × 1
User-supplied (not included): RJ45 connector
Notes
•
When connecting this optional service card to the trunk, connect through NT1; do not
connect to the trunk directly.
•
When connecting the RJ45 connector, attach the included ferrite core (except in
Canada, where the ferrite core is not necessarily be attached). 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".
CAUTION
PRI ports are SELV ports and should only be connected to SELV services.
Switch Settings
Switch
A/B
86
Installation Manual
LEDs
RJ45
Type
Slide
Usage and Status Definition
Select A (default) for trunk or B for extension use.