User Guide

Grandstream Networks, Inc. HT-502 User Manual Page 26 of 31
Firmware 1.0.0.29 Last Updated: 01/2007
NO LOCAL TFTP SERVER
For users who do not have a local TFTP server, Grandstream provides a NAT-friendly TFTP server on
the public Internet for users to download the latest firmware upgrade automatically. Please check the
Services section of Grandstream’s Web site to obtain this TFTP server IP address. Alternatively, user
can download and install a free TFTP or HTTP server in his LAN for a firmware upgrade. A free
Windows version TFTP server can be downloaded from:
http://support.solarwinds.net/updates/New-customerFree.cfm.
TFTP Server Downloading Directions
:
1. Unzip the file and put all of the files under the root directory of the TFTP server.
2. Put the PC running the TFTP server and the HT–502 in the same LAN segment.
3. Go to File -> Configure -> Security to change the TFTP server's default setting from "Receive
Only" to "Transmit Only" for the firmware
upgrade.
4. Start the TFTP server, in the phone’s web configuration page.
5. Configure the Firmware Server Path with the IP address of the PC.
6. Update the change and reboot the unit.
You can also download the free HTTP server from
http://httpd.apache.org or use Microsoft IIS web.
F
IRMWARE AND CONFIGURATION FILE PREFIX AND POSTFIX
Firmware Prefix and Postfix allows the device to download the firmware name with the matching Prefix
and Postfix. This makes it possible to store ALL firmware with different versions in a single directory.
Similarly, Config File Prefix and Postfix allows the device to download the configuration file with the
matching Prefix and Postfix, allowing multiple configuration files for the same device to be stored in one
directory.
In addition, when the field “Check New Firmware only when F/W pre/suffix changes” is set to “Yes”, the
device will only issue a firmware upgrade request if there are changes in the firmware Prefix or Postfix.
M
ANAGING FIRMWARE AND CONFIGURATION FILE DOWNLOAD
When “Automatic Upgrade” is set to “Yes”, Service Provider can use P193 (Auto Check Interval, in
minutes, default and minimum is 60 minutes) to have the devices periodically check with either Firmware
Server or Config Server, whenever they are defined. This allows the device periodically check if there are
any new changes need to be taken on a scheduled time. By defining different intervals in P193 for
different devices, Server Provider can spread the Firmware or Configuration File download in minutes to
reduce the Firmware or Provisioning Server load at any given time.