Avaya one-X 1603SW, Administrator'S Manual, Page: 18 / 124

Administration Overview and Requirements
18 Avaya 1603SW-I SIP Deskphones Administrator Guide
Telephone Initialization Process
These steps offer a high-level description of the information exchanged when the telephone
initializes and registers. This description assumes that all equipment is properly administered
ahead of time. This description can help you understand how the 1603SW-I SIP Deskphones
relate to the routers and servers in your network.
Step 1: Deskphone to Network
The deskphone is appropriately installed and powered. After a short initialization process, the
deskphone identifies the LAN speed and sends a message out into the network, identifying
itself and requesting further information. A router on the network receives and relays this
message to the appropriate DHCP server.
Step 2: Deskphone to LLDP-Enabled Network
An LLDP-enabled network provides information to the deskphone, as described in Link Layer
Discovery Protocol (LLDP) on page 91. Among other data passed to the telephone is the IP
Address of the HTTP or HTTPS server.
Step 3: Deskphone to DHCP Server
The DHCP server provides information to the telephone, as described in DHCP and File
Servers on page 47. Among other data passed to the telephone is the IP Address of the HTTP
or HTTPS server.
Step 4: Deskphone and File Server
The 1603SW-I IP Deskphones can download upgrade files, binary files, language files, and
settings files from either an HTTP or HTTPS server. The deskphone queries the file server,
which transmits an upgrade file to the telephone. At a minimum, this 16xxupgrade.txt file tells
the telephone which binary file the telephone must use. The binary file is the software that has
the telephony functionality.
The telephone uses the 16xxupgrade.txt file to determine if it has the proper binary file. If the
deskphone determines the proper binary file is missing, the deskphone requests an binary file
download from the file server. The file server then downloads the file and conducts some
checks to ensure that the file was downloaded properly. If the deskphone determines it already