2.4 Installation of the CO Line Cards
Installation Manual 77
2.4.4 PRI23 Card
Function
1-port ISDN Primary Rate Interface card (23B channels). NI (North American standard ISDN protocol)
compliant.
Accessory and User-supplied Items
Accessory (included): none
User-supplied (not included): RJ45 connector
Notes
• Connect this optional service card to the CO line through an NT1; do not connect to the U interface
of the CO line directly.
• To confirm the CO line connection, refer to "Confirming the CO Line Connection" in "2.12.1 Starting
the Hybrid IP-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 Keep the switch at default A position. Do not change the position of this
switch.
LEDs
RJ45
AB
NT1
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