User's Manual
FIRMWARE VERSION 1.0.7.6    HT502 USER MANUAL     Page 27 of 48  
DHCP hostname  Default is blank. This option specifies the name of the client. This field is optional but may 
be required by some Internet Service Providers. 
DHCP vendor class ID  Default is HT500. Used by clients and servers to exchange vendor-specific information.. 
PPPoE account ID 
PPPoE username. Necessary if ISP requires you to use a PPPoE (Point to Point Protocol 
over Ethernet) connection. 
PPPoE password 
PPPoE account password. 
PPPoE Service Name  Default is blank. This field is optional. If your ISP uses a service name for the PPPoE 
connection, enter the service name here. 
Time Zone 
Controls how the date/time is displayed according to the specified time zone. 
Self Defined Time Zone  The syntax is std offset dst [offset],start[/time],end[/time] 
Default is set to : MTZ+6MDT+5,M3.2.0,M11.1.0 
MTZ+6MDT+5, 
Time zone with 6 hours offset with 1 hour ahead which is the US central time. It is positive 
(+) if the local time zone is west of the Prime Meridian and negative (-) if it is east. 
Prime Meridian (a.k.a: International or Greenwich Meridian) 
M3.2.0,M11.1.0 
The 1
st
 number indicates Month: 1,2,3,..,12 (for Jan, Feb, .., Dec) 
The 2
nd
 number indicates the n
th
 iteration of the weekday: (1st Sunday, 3rd Tuesday etc) 
The 3
rd
 number indicates Weekday: 0,1, 2, ..,6(for Sun, Mon, Tue, .., Sat) 
Therefore, this example is the DST which starts from the second Sunday of March to the 
1st Sunday of November. 
Language 
Languages supported with voice prompt and web interface, except Spanish that it is only 
in IVR. 
Device Mode 
This parameter controls whether the device is working in NAT router mode or Bridge 
mode. Save the setting and reboot prior to configuring HT502. 
NAT Maximum Ports 
The number of ports that can be managed while in NAT router mode. 
Range: 0 – 4096, default is 1024. Typically one port per connection. 
NAT TCP Timeout 
NAT TCP idle timeout in seconds. Connection will be closed after preconfigured, timeout 
if not refreshed. Range: 0 - 3600 
NAT UDP Timeout 
NAT TCP idle timeout in seconds. Connection will be closed after preconfigured, timeout 
if not refreshed. Range: 0 – 3600, default is 300 










