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Grandstream Networks, Inc. HT-502 User Manual Page 22 of 35
Firmware 1.0.0.39 Last Updated: 03/2007
Layer 3 QoS
This field defines the layer 3 QoS parameter which can be the value used for IP
Precedence or Diff-Serv or MPLS. Default value is 48.
Layer 2 QoS
Value used for layer 2 VLAN tag. Default setting is blank.
STUN Server
IP address or Domain name of the STUN server.
Keep-alive interval
This parameter specifies how often the HT–502 sends a blank UDP packet to the
SIP server in order to keep the “hole” on the NAT open. Default is 20 seconds.
Minimum value is 20 seconds.
Firmware Upgrade
and Provisioning
Enables HT–502 to download firmware or configuration file through either the
TFTP or HTTP server.
Via TFTP Server
This is the IP address of the configured TFTP server. If selected and it is non-
zero or not blank, the HT–502 retrieves the new configuration file or new code
image from the specified TFTP server at boot time. After 5 attempts, the system
will timeout and will start the boot process using the existing code image in the
Flash memory. If a TFTP server is configured and a new code image is
retrieved, the new downloaded image is saved into the Flash memory.
Note: Please do NOT interrupt the TFTP upgrade process (especially the power
supply) as this will damage the device. Depending on the network environment
this process can take up to 15 or 20 minutes.
Via HTTP Server
The URL for the HTTP server used for firmware upgrade and configuration via
HTTP.
For example, ttp://provisioning.mycompany.com:6688/Grandstream/1.0.0.34
“:6688” is the specific TCP port where the HTTP server is listening; it can be
omitted if using default port 80.
Note: If Auto Upgrade is set to No, HT–502 will only do HTTP download once at
boot up.
Firmware Server
Path
IP address or domain name of firmware server.
Config Server Path
IP address or domain name of configuration server.
Firmware File Prefix
Default is blank. If configured, HT–502 will request firmware file with the prefix.
This setting is useful for ITSPs. End user should keep it blank.
Firmware File
Postfix
Default is blank. End user should keep it blank.
Config File Prefix
Default is blank. End user should keep it blank.
Config File Postfix Default is blank. End user should keep it blank.
Automatic Upgrade
Choose “Yes” to enable automatic upgrade and provisioning. In “Check for new
firmware every” field, enter the number of days to enable HT-502 to check the
server for firmware upgrade or configuration in the defined period of days. When
set to No, HT-502 will only do upgrade once at boot up. “Always check for New
Firmware.” Check New Firmware only when F/W pre/suffix changes”