AudioCodes 450HD - Page 4

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 Step 4: Attach the panel that you removed from the phone in Step 3 to the side of the Expansion
Module, like this:
 Step 5: Invert the assembled unit and secure the side panel by screwing in the three screws, like this:
 Step 6: [Refer again to the figure above] Secure the connection of the two units by screwing in
these five screws.