User guide

Interface Cards 41
Installation
To install an interface card, please follow these steps:
1. Switch off the Forum 523/524. Open the device (see Opening
and Closing Forum 523/524 starting on page 36).
2. To discharge, touch a radiator or another metallic installation
connected to earth ground. Take the interface card out of its
packaging. Check that it is the correct type of card. There is a
label specifying the type on the connector.
CAUTION!
Static charges can damage the Forum 523/524’s electronic
components, so you must provide potential equalisation
between you and the system. Hold the edge of the interface
card with one hand. With the other hand briefly touch the
capacitor on the board.
3. Carefully plug the interface card into its designated slot. The
label on the interface card’s connector must be facing to the
right.
Make sure it is sitting firmly in the slot.
4. Close the cover as far as the protection plate (see Opening and
Closing Forum 523/524 starting on page 36, steps 7 to 9).
Connect the required connection cables to the relevant
connection blocks (see also Position of the Interfaces starting
on page 42).
5. Close the cover of the device completely. Switch on the
Forum 523/524.
Forum 523/524’s software can identify the type of interface card.
After installation the interface card must be individually config-
ured before starting operations.
Once you have restarted Forum 523/524 you can view the inter-
face cards’ status in der Web console. to do this, call up the menu
item Telephony: Ports: Slots. You will see a green tick in the
Status column in the table next to the slot’s number (1 or 2). The
type of interface card must also be also shown in the hidden col-
umn.