Grandstream Networks HT496 - Manual (Page 21)

Grandstream Networks, Inc. HT496 User Manual Page 21 of 29
Firmware 1.0.3.86 Last Updated: 7/2007
T ABLE 9: HT496 Advanced Configuration Page Definitions
Admin Password This contains the password to access the Advanced Web Configuration page. This
field is case sensitive.
Home NPA Local area code for North American Dial Plan.
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 This setting includes two fields. The 802.1Q/VLAN Tag contains the value used for
layer 2 VLAN tag. Default setting is blank. The 802.1p priority value contains the
value of the priority value.
STUN Server STUN server’s IP or FQDN
Keep-alive interval This parameter specifies how often the HT496 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 10 seconds.
Use NAT IP: NAT IP address used in SIP/SDP message. Default is blank.
Firmware Upgrade and
Provisioning Default method is HTTP. Firmware upgrade may take up to 20 minutes depending on
network environment. Do not interrupt the firmware upgrading process.
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, HT496 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 Default is “NO”.
When set to No, HT496 will only do upgrade once at boot up. “Check every day “, ”
Check every week”, “Always check for New Firmware at Boot up.” “ Check New
Firmware only when F/W pre/suffix changes”
Firmware Key Used for firmware encryption. Should be 32 digit in Hexadecimal Representation.
End user should keep it blank.
On-hook Threshold The time hook-flash is pressed that causes the device to on-hook. Default is 800ms.
FXS Impedance Selects the impedance of the analog telephone connected to theRJ-11 FXS port. The
following information may be useful for end user configuration:
600Ohm – North America
270+750Ohm || 150nF – Most of Europe
220+820Ohm || 120nF – Australia, New Zealand
220+820Ohm || 115nF – Austria, Bulgaria, Germany, Slovakia, South Africa
370+620Ohm || 310nF – UK, India