User`s guide

Installation and First-Time Operation
101
eud-0850/2.1 — I7.7 — 10.2008
■ Connecting the 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 mod-
ules (maximum 3).
Note:
Always disconnect the phone from the mains first before you connect/disconnect an Aastra M530⁄M535
expansion key module.