Daylight Savings Time

 

Controls whether displayed time is daylight savings time or not. If set to “Yes” and the

 

 

 

 

Optional Rule is empty, then the displayed time will be 1 hour ahead of normal time.

 

 

 

 

• The “Automatic Daylight Saving Time Rule” has the following syntax:

 

 

 

 

o start-time;end-time;saving. Both start-time and end-time have the

 

 

 

 

 

same syntax: month,day,weekday,hour,minute

 

 

 

 

o month: 1,2,3,..,12 (for Jan, Feb, .., Dec)

 

 

 

 

o

day: [+-]1,2,3,..,31

 

 

 

 

o weekday: 1, 2, 3, .., 7 (for Mon, Tue, .., Sun), or 0 indicating daylight

 

 

 

 

o

savings rule is based on the day of the month.

 

 

 

 

hour: hour (0-23),

 

 

 

 

o

minute: minute (0-59)

 

 

 

 

• If “weekday” is 0, it means the date to start or end daylight savings is the given

 

 

 

 

date. The “day” value must not be negative.

 

 

 

 

• If “weekday” is not zero and “day” is positive, then daylight saving starts on the

 

 

 

 

first “day” of the week (1st Sunday, 3rd Tuesday etc).

 

 

 

 

• If “weekday” is not zero and “day” is negative, then daylight savings starts on the

 

 

 

 

last “day” of the week (last Sunday, 3rd last Tuesday etc).

 

 

 

 

• Daylight savings is in minutes. If preceded by a (-), then subtract the number of

 

 

 

 

minutes.

 

 

 

 

 

The default value for “Automatic Daylight Saving Time Rule” is US time:

 

 

 

 

“04,01,7,02,00;10,-1,7,02,00;60”.

 

 

 

 

Example: US/Canada, where daylight savings is applicable:

 

 

 

 

04,01,7,02,00;10,-1,7,02,00;60

 

 

 

 

Daylight savings starts from the first Sunday of April at 2AM and ends the last Sunday of

 

 

 

 

October at 2AM.).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Device Mode

 

Enables use of the device as a router or a bridge.

 

 

 

 

 

 

 

 

 

 

 

 

 

WAN side HTTP/Telnet

 

If set to “Yes”, user can access the configuration page through the WAN port, instead of

 

 

Access

 

through the “PC” port. Warning: this configuration is less secure than default option.

 

 

 

 

Default is No.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reply to ICMP on WAN

 

If set to “Yes”, the HT496 will respond to the PING command from other computers, but it

 

 

port

 

also is vulnerable to the DOS attack. Default is No.

 

 

 

 

 

 

 

 

 

 

 

 

 

Cloned WAN MAC

 

Set a specific MAC address. Set in Hex format.

 

 

Address:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LAN Subnet Mask

 

Sets the LAN subnet mask. Default value is 255.255.255.0.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LAN DHCP Base IP:

 

Base IP for the LAN port which functions as a gateway for the subnet. Default value is

 

 

 

 

192.168.2.1.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DHCP IP Lease Time:

 

Value is set in number of hours. Default value is 120hr (5 Days.) The amount of time IP

 

 

 

 

address are assigned to LAN clients.

 

 

 

 

 

 

 

 

 

 

 

 

 

DMZ IP:

 

Forward all WAN IP traffic to a specific IP address if no matching port is used by HT496or

 

 

 

 

defined in port forwarding.

 

 

 

 

 

 

 

 

 

 

 

 

 

Port Forwarding:

 

Forwards a matching (TCP/UDP) port to a specific LAN IP address with a specific

 

 

 

 

(TCP/UDP) port.

 

 

 

 

 

 

 

 

In addition to the Basic Settings configuration page, end users also have access to the Device Status page.

Grandstream Networks, Inc.

HT496 User Manual

Page 19 of 29

 

Firmware 1.0.3.86

Last Updated: 7/2007

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Grandstream Networks HT496 Daylight Savings Time, Device Mode, WAN side HTTP/Telnet, Access, Reply to Icmp on WAN, Port
Page 18 Page 20

HT496 specifications

Grandstream Networks has established itself as a leading provider of communication solutions, specializing in voice-over-IP (VoIP) technology. Among its diverse product line, the HT386, HT496, HT488, HT486, and HT286 analog telephone adapters stand out as exceptional devices tailored for seamless integration into modern telecommunication systems.

The Grandstream HT386 is particularly noted for its robust performance and versatility. It supports up to 4 lines, making it ideal for small to medium-sized businesses that require efficiency and reliability. The unit features advanced security protocols such as SRTP and TLS to protect voice communications, ensuring that data is secure during transmission. Additionally, the HT386 boasts an easy installation process and web-based management, which simplifies configuration and maintenance.

Next in line is the HT496, which caters to users with even more demanding requirements. This adapter accommodates up to 4 FXS ports, allowing the connection of multiple analog devices. Enhanced features like 2 SIP accounts and high-definition voice codecs ensure clear audio quality. The HT496 is designed to offer seamless interoperability with various IP routers and switches, making it a flexible solution for businesses expanding their communication framework.

The HT488, another notable entry, is geared towards those looking for high-performance analog telephony. With support for 2 lines and advanced echo cancellation technologies, it guarantees crystal-clear calls, minimizing disruptions during conversations. Additionally, it provides multiple network connectivity options, including DHCP and static IP, allowing users to choose the best configuration suitable for their network environment.

The HT486 offers similar benefits but is optimized for users who require a compact solution. This model features an elegant design while maintaining support for essential VoIP features. With 2 FXS ports and built-in firewall capabilities, it ensures secure and efficient communication for residential and small business users.

Finally, the HT286 is perfect for those seeking an entry-level adapter without compromising on quality. Supporting a single line with a straightforward setup process, it is ideal for users transitioning from traditional phone systems to VoIP technology. This model is also compatible with various VoIP service providers, ensuring users have flexibility when choosing their phone services.

In summary, Grandstream’s HT series—HT386, HT496, HT488, HT486, and HT286—delivers a comprehensive range of features and technologies suited for different communication needs. Each model combines quality with user-friendly interfaces, ensuring that users can fully leverage the benefits of VoIP, whether for personal or business use.
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