19
I
NSTALLING TELEPHONY CARDS
CHAPTER 3 HARDWARE INSTALLATION
Installing Telephony Cards
To install telephony cards:
1. Ensure that adequate earth ground connection has been made between the grounding screw on the
back of the controller and an appropriate grounding point in your site.
WARNING: Adequate earth ground connection of the controller is mandatory to avoid any damage or
injuries.
2. Wear an ESD wrist strap, ensuring that it makes good contact with bare skin.
3. Attach the ESD wrist strap end to an earth ground (grounding screw on the back of the controller or
unpainted bare metal spot of a grounded equipment rack).
4. Turn off the power switch of the controller.
NOTE: Redundant power supply units do not have a power switch.
WARNING: The controller unit must be turned off before adding, removing, or swapping the system
cards.
5. Turn off the power sources used to power the controller at the circuit breaker.
6. Disconnect all cables (except the earth ground connection) from the controller.
CAUTION: Power source cables must be disconnected last.
7. Unscrew the two thumb screws of the slot where you want to install or replace a card.
NOTE: Before installing a new card, refer to Slots Order.
8. Gently remove the blank plate or the existing card.
9. Gently slide the new card into the internal plastic rails of the slot.
NOTE: Insert a blank plate in each unused slot.
NOTE: While sliding in the card, take care not to damage the electronic parts on the card. The card,
when properly inserted, slides in easily.
10. Tighten the thumb screws back into place. Do not over-tighten.
Cabling
To connect cables:
1. Wear an ESD wrist strap, ensuring it makes good contact with your bare skin.
2. Attach the ESD wrist strap end to an earth ground (unpainted bare metal spot of a grounded equip-
ment rack).
3. Turn off the power switch of the controller.
NOTE: Redundant Power Supply units do not have a power switch.
4. Make sure the circuit breakers of AC power sources used to power the EX Controller are off.
5. Make sure the provided power cable is connected to the EX Controller and in an appropriate AC elec-
trical outlet.
6. Connect faxes, phones or a PBX to the FXS card.
7. Connect a PBX or ISDN line to the PRI card.
咨询订购：400-010-8885、 Support@mitel.com.cn
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