Aastra 5380ip User Manual Aastra 5380/5380ip (Office 80/80IP) - Page 101

Installation and First-Time Operation ■ Connecting the Aastra M530⁄M535 expansion key module Note: Always disconnect the phone from the mains first before you connect/disconnect an Aastra M530⁄M535 expansion key module. • Unplug the phone cord from the socket on the underside of the phone. • Attach Aastra M530⁄M535 expansion key module to the right of the phone until you feel and hear it snap into place, as indicated in the following figure. • Plug the cord into the supplementary equipment sockets on the underside of the phone and the Aastra M530⁄M535 expansion key module. • Feed the connecting cable through the strain relief on the underside of the Aastra M530⁄M535 expansion key module. • Plug the phone cord back into the socket on the underside of the phone. The expansion key module Aastra M530⁄M535 is now ready for operation. • Depending on the type of power supply, you may need additional power supply units for your expansion key modules. If there is an under supply of power, a message appears on the display. Contact your system administrator for more information. • Proceed in a similar way if you want to connect other Aastra M530⁄M535 expansion key modules (maximum 3). 101 eud-0850/2.1 - I7.7 - 10.2008