Aastra 5380 - Page 156

Installation and first-time operation
156 Aastra 5380/Aastra 5380ip
eud-1282/1.3 – R3.0 – 04.2013
Connecting the Aastra M530/Aastra M535 expansion key module
• Unplug the phone cord from the socket on the underside of the phone.
• Attach Aastra M530/Aastra 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/Aastra M535 expansion key module.
• Feed the connecting cable through the strain relief on the underside of the
Aastra M530/Aastra M535 expansion key module.
• Plug the phone cord back into the socket on the underside of the phone. The
expansion key module Aastra M530/Aastra 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 mes-
sage appears on the display. Contact your system administrator for more informa-
tion.
• Proceed in a similar way if you want to connect other Aastra M530/Aastra M535
expansion key modules (maximum 3).
Note:
Always disconnect the phone from the mains power first before you connect/dis-
connect an Aastra M530/Aastra M535 expansion key module.