Tftp Server Planning - Avaya Communication Server 1000 Installation And Commissioning Manual

The WLAN handsets specifically request a list of options in the DISCOVER message. The
list of options (aside from the IP address and subnet mask) needed by a WLAN handset is:
• Class Identifier (60)
• TFTP Server (66)
• Signaling Server Address and other parameters (43, 128, 144, 157, 191, or 251)
• WLAN IP Telephony Manager 2245 Address (151)
• WLAN Application Gateway 2246 Address (152)
Another use for the DHCP server is to make code upgrades to the handset easier. To prevent
handsets from checking for code upgrades, assign the value of 255.255.255.255 for the TFTP
server address.
A problem can arise for handset users who travel. For example, the company employing the
handset solution is a retailer with many stores. Each store has a local call server for the local
employees who use various VoIP devices, so all the attributes are defined at the scope level.
What happens if supervisors, who travel from store to store, want to use their handsets at each
location? The supervisors can be assigned to a signaling server that does not recognize their
phones. The best way to support these users is to create unique reservations in each remote
scope for each user's WLAN handset and specify the proper signaling server. This solution
can be cumbersome if there are a large number of users who travel.

TFTP Server planning

A TFTP Server (RFC1350) holds the software images for updating the handsets and the WLAN
IP Telephony Manager 2245. After the IP address of the TFTP server is configured on a
wireless handset, each time the wireless handset is powered on, the wireless handset checks
its version of hardware against the hardware on the TFTP Server, and if the version is different,
the wireless handset downloads the new hardware from the TFTP Server. Similarly, when a
WLAN IP Telephony Manager 2245 reboots, or is manually reset by the operator, it checks its
version of software against the version on the TFTP Server. If the versions are different, the
WLAN IP Telephony Manager 2245 downloads the new software.
The WLAN Handsets 2210/2211/2212 and Avaya 6120/6140 WLAN Handsets share the same
configuration file that provides hardware version information for the TFTP process. The actual
software files are specific to either the WLAN Handset 2200 series or the Avaya 6100 S Series
WLAN Handset. At an installation, which uses both the WLAN Handsets 2210/2211/2212 and
the Avaya 6120/6140 WLAN Handsets, the software files for both handset series must be
installed and available on the TFTP server for the site.
Only one TFTP server is needed in the network, and it need not be colocated with the handsets
or the WLAN IP Telephony Manager 2245.
There is a client-dependent aspect to how the handsets function with the TFTP server. How
well a server works with the handsets can vary between code versions on the handset.
Avaya WLAN IP Telephony Installation and Commissioning

TFTP Server planning

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