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Expansion Module 1100 Series User Guide
Chapter 4
Expansion module startup initialization
Once you have installed and powered up the expansion module on the IP Phone, the expansion
module initializes.
Table 5 on page 25 describes the initialization process for the expansion module.
Table 5 Initializing the expansion module
Activity Description
The expansion module performs a self-test The self-test confirms the operation of the local memory, CPU, and
other circuitry f the expansion module. During the self-test, the
expansion module display lights up.
Note: If the expansion module display does not light up, or lights up
and then goes blank, check that the expansion module is correctly
installed and configured.
The expansion module establishes
communication with the IP Phone
The expansion module display flashes until it establishes
communication with the IP Phone.
Note: If the expansion module display does not start flashing, check
that the expansion module is correctly installed and configured.
Note: If the expansion module display does not stop flashing, the
expansion module has not established communication with the
IP Phone. Check that the expansion module is correctly installed and
configured.
The expansion module downloads key
mappings and labels
The key labels download to the expansion module. During the
download, the display is blank.