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C
ONNECTORS AND INDICATORS
CHAPTER 3 GETTING STARTED
Slots
The following graphic indicates the slots on the EX controller:
Slot Order (Important)
The order and location the cards are installed is crucial to the controller to work properly. The numbers in
the following graphic indicate the slots and order in which they must be installed.
• Slot numbers are displayed on the front, left-bottom corner of the controller.
• Cards must be installed from slot 1 sequentially, without leaving empty slots between the cards.
• Install all PRI card(s) first, sequentially starting from slot 1.
• Install a DSP card in the first slot available after the PRI card(s).
• If there is no PRI card, then install the DSP card in slot 1.
• Install FXO, FXS, and BRI cards in the next available slots after the DSP card.
• If there are no PRI or DSP cards, then all the slots must remain empty.
NOTE: Be aware that if a card is installed and configured to be used in a slot, moving it to another slot will
cause the configuration of the slot to be lost. Therefore the card will no longer work until it is reconfigured
for the new slot.
WARNING: Ensure that there is a PRI card in the system before performing Auto Sense of ISDN trunks. If
you perform Auto Sense operation on a system that has no PRI cards, the following error message is
displayed: “Error occurred running auto sense, see logs for details”.
LEDS
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