Avaya 4600 Series - Manual (Page 25)

Overview of Voice over IP (VoIP)
Initialization Process
2-9
Step 3: Telephone and TFTP Server 2
The telephone queries the TFTP server, which transmits a script file to the telephone. This script
file, at a minimum, tells the telephone which application file the telephone should be using (the
application file is the software that has the telephony functionality, and can be easily updated for
future enhancements).
The telephone uses the script file to determine if it has the proper application file. A newly-installed
telephone will have no application file, and hence does not have the proper one. A previously-
installed telephone may or may not have the proper application file. In any event, if the telephone
determines it does not have the application file the script file says the telephone should have, the
telephone requests a download of the proper application file from the TFTP server. The TFTP
server then downloads the file and conducts some checks to ensure the file was downloaded
properly. If the telephone determines it already has the proper file, it proceeds to the next step
without downloading the application file again.
Step 4: Telephone and the DEFINITY ®
/
MultiVantage
TM
Call Server 2
In this step, the telephone and the PBX exchange a series of messages which cause the display
on the telephone to prompt the user. For a new installation, the user must enter the telephone’s
extension and the call server password. For a restart of an existing installation, this information is
already stored on the telephone, but the user must confirm the information. In either case, manual
intervention is required. The telephone and the switch exchange more messaging, with the
expected result that the telephone is appropriately registered on the switch.
More details about the installation process are available in the 4600 Series IP Telephone
Installation Manual and in Chapter 3 of this document.