This section shows and explains the connectors on your Cisco 7905/7906 IP phone
When you connect your phone, you can adjust the handset rest so that the receiver will not slip out of
To adjust the handset:
Set the handset aside and pull the square plastic tab upward.
Rotate the tab 180 degrees.
Slide the tab back into the handset rest. An extension protrudes from the top of the rotated tab.
Return the handset back to the handrest.
Network port (10BASE-T)
DC adapter port (DC48V)
Cisco power supply (optional)
Power cable with wall socket plug