Installation and First-Time Operation81eud-0850/2.0 — I7.6 — 08.2007n DismantlingDesktop phone:• Disconnect the phone cord and remove.• Carefully pull the stand rest away in the opposite direction.Wall set:• Carefully slide the phone upwards out of the stand rest.• Disconnect the phone cord and remove.Connecting the Office 80n Connectionsn Connecting your phone to the system• Plug the connector on the phone cord on the underside of the phone into the socket withthe phone symbol.• Desktop installation only: To relieve the strain on the cable feed the cable through one of thecable guides on the stand rest.• Plug the other end of the cable into the phone socket outlet.• Set channel selector switch on the underside of the phone. Contact your system administra-tor for more information.n Logging your phone onYour system administrator has to prepare the system before you can log on your phone.Telephone connectionConnecting the handsetConnecting the headsetConnecting the Office KBM⁄DKBM expansion key module or power supply