HandyTone-486 User Manual Grandstream Networks, Inc.
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Once the TFTP server is configured, power cycle the HandyTone ATA to start TFTP
upgrade.
TFTP checking is only performed during the initial power up. If the configured TFTP
server is found and a new code image is available, the HandyTone ATA will attempt to
retrieve the new image files by downloading them into the HandyTone ATA’s SRAM.
During this stage, the HandyTone ATA’s LEDs will blink in red until the
checking/downloading process is completed. Upon verification of checksum, the new
code image will then be saved into the Flash. If TFTP fails for any reason (e.g., TFTP
server is not responding, there are no code image files available for upgrade, or
checksum test fails, etc), the HandyTone ATA will stop the TFTP process and simply
boot using the existing code image in the flash.
TFTP may take as long as 1 to 20 minutes depends on the networks’ connection to
Internet, or just 20+ seconds if it is performed on a LAN environment. It is generally
recommended to conduct TFTP upgrade process in a controlled LAN environment if
possible. For users who do not have local TFTP server, Grandstream provides a NAT-
friendly TFTP server on the public Internet, also an HTTP web server (in the near
future) for users to download the latest firmware and upgrade automatically. Please
check the Service or Support section of Grandstream’s Web site to obtain those servers’
IP addresses.
