User's Manual

650 TFTP Server

Figure 132

TFTP Server on a network

The following information must be considered when planning for a TFTP

Server:

• The process for the IP Phone to check the version of firmware against

the firmware on the TFTP Server takes a few seconds for a quiet

network.

• The IP Phone attempts to connect to the TFTP Server. If the TFTP

Server is offline, unreachable, or no connection is made, the IP Phone

uses its existing version.

• The firmware downloading process takes about 30 seconds.

• The TFTP Server must be capable of supporting multiple TFTP

sessions.

• When the IP Phone makes a TFTP request, it uses filenames without a

full path name. Therefore, firmware updates for the IP Phones must be

installed on the root directory of the TFTP Server.

When the firmware is uploaded to the TFTP Server, the files must be

unzipped. Allow time for the TFTP Server to refresh. Monitor the TFTP

Server for any errors. The TFTP Server can be located anywhere on the

network if the IP Phones have the subnet mask and default IP gateway

configured correctly. However, the IP Phone expects a response within

two seconds to any TFTP Server request. Therefore, the TFTP Server

should not be located, for example, at the other end of a slow WAN link.

Nortel Communication Server 1000

IP Phones Fundamentals

NN43001-368 05.06 30 April 2010