IP PHONE FOR MX-ONE™
27 6/1553-DBC 444 01 Uen B4 2014-03-26
4.4.1 Installing an Option Unit
To install the option unit, do the following:
1. Log off the phone and disconnect the power from the phone to
avoid electrostatic discharges, ESD.
2. Connect the ribbon cable to the phone, making sure the cable does
not get stuck.
3. Attach the option unit at the arrows on the back of the phone. Press
until you hear a click sound.
Note: Avoid touching the contacts when you connect the ribbon cable.
4. Connect the cables to the option unit and attach the rubber piece
as showed in the figure below.
Apart from the pc and LAN cables, you need connect the auxiliary
cable for an extra bell or busy lamp.
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