Setup and assembly14Expansion Module startup initializationOnce the Expansion Module has been installed and powered up on theIP Phone, the Expansion Module initializes.Table 1 lists the initialization process for the Expansion Module.Using the wall-mount optionIP Phone and Expansion Module combination can be wall-mounted usingthe wall mount template provided.Table 1: Initializing Expansion ModulePhase DescriptionExpansionModule performsself-testThe self-test confirms the operation of theExpansion Module local memory, CPU, and othercircuitry. While undergoing this self-test, theExpansion Module display lights up.Note: If the Expansion Module display does notlight up, or lights up and then goes blank, or fails tobegin flashing, check that the Expansion Module iscorrectly installed and configured.ExpansionModuleestablishescommunicationwith theIP PhoneThe Expansion Module display flashes until itestablishes communication with the IP Phone.If the Expansion Module display does not stopflashing, communication has not been establishedwith the IP Phone. Check that the ExpansionModule is correctly installed and configured.ExpansionModuledownloads keymapsThe key labels download to the Expansion Module.During the download, the display is blank.