Nortel 1110 Installation And Operation Manual page 487

Table 59
Startup initialization process for the Expansion Module
Phase
1 Expansion Module
performs self-test
2 Expansion Module
establishes
communication with the
IP Phone
3 Expansion Module
downloads key maps
Expansion Module for IP Phone 1100 series
Table 59 lists the initialization process for the Expansion Module.
Description
The self-test confirms the operation of the Expansion
Modules local memory, CPU, and other circuitry. While
undergoing this self-test, the Expansion Modules display
lights up.
Note: If the Expansion Modules display does not light up, or
lights up and then goes blank, or fails to begin flashing, check
that the Expansion Modules is correctly installed and
configured.
Note:
The Expansion Modules display flashes until it establishes
communication with the IP Phone.
If the Expansion Modules display does not stop flashing,
communication is not established with the IP Phone. Check
that the Expansion Modules is correctly installed and
configured.
The key labels download to the Expansion Modules. During
the download, the display is blank.
When the three phases complete successfully, you are ready to use the
additional self-labeled line/programmable feature keys on the Expansion
Module.
If you have a second or a third Expansion Module installed on your IP Phone,
the one to the immediate right of the IP Phone must be functional so that
subsequent Expansion Module to work. This is necessary because the second
Expansion Module receives its power, and communicates with the IP Phone,
through the first Expansion Module; and the third Expansion Module receives
its power, and communicates with the IP Phone, through the second
Expansion Module.
IP Phones Description, Installation, and Operation
Page 487 of 630