Avaya one-X 1603SW, Administrator'S Manual, Page: 63 / 124

Issue 1 June 2010 63
Chapter 7: Telephone Software and Binary Files
General Download Process
The 1603SW-I SIP IP Deskphones download upgrade files, settings files, language files, and
software files from a file server. All of the file types can be downloaded either via HTTP or
HTTPS except the software files, which can only be downloaded via HTTP. Avaya recommends
HTTPS for downloading the file types because it ensures the integrity of the downloaded file by
preventing "man in the middle" attacks. HTTPS is not used for software file downloads because
1603SW-I IP Deskphone software files are already digitally signed, so there is no need to incur
additional processing overhead while downloading these relatively large files. The HTTPS
protocol applies only if the server supports Transport Layer Security (TLS) encryption.
Note:
Note:
The 16xxupgrade.txt file, binary files, and settings files discussed in this chapter
are identical for file servers running HTTP and HTTPS. The generic term “file
server” refers to a server running either HTTP or HTTPS.
When shipped from the factory, 1603SW-I IP Deskphones might not contain the latest software.
When the telephone is first plugged in, it will attempt to contact a file server, and will download
new software if the software version available on the file server is different than the version on
the phone. For subsequent software upgrades, the call server provides the capability to
remotely reset the telephone, which then initiates the same process for contacting a file server.
The telephone queries the file server, which transmits a 16xxupgrade.txt file to the deskphone.
The 16xxupgrade.txt file tells the telephone which binary file the deskphone must use. The
binary file is the software that has the telephony functionality, and is easily updated for future
enhancements. In a newly installed deskphone, the binary file might be missing. In a previously
installed deskphone, the binary file might not be the proper one. In both cases, the deskphone
requests a download of the proper binary file from the file server. The deskphone downloads the
file and conducts some checks to ensure that the file was downloaded properly. If the
deskphone determines it already has the proper file, the deskphone proceeds to the next step
without downloading the binary file again.
After checking and loading the binary file, the 1603SW-I SIP IP Deskphone, if appropriate, uses
the 16xxupgrade.txt file to look for a settings file. The settings file contains options you have
administered for any or all of the IP telephones in your network. For more information about the
settings file, see
Contents of the Settings File on page 67.
Software
As part of installation, a conversion from H.323 to SIP signaling protocol is done as described in
"Converting Software on 1603SW-I IP Deskphones" of the
Avaya one-X™ Deskphone Value