| NAT TCP Timeout |
| NAT TCP idle timeout in seconds. Connection will be closed after preconfigured, timeout |
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| if not refreshed. Range: 0 - 3600 |
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| NAT UDP Timeout |
| NAT TCP idle timeout in seconds. Connection will be closed after preconfigured, timeout |
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| if not refreshed. Range: 0 – 3600, default is 300 |
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| Uplink Bandwidth |
| The maximum uplink bandwidth permitted by the device. | This function is disabled by |
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| default. The total bandwidth can be set as: 128K, 256K, 512K, 1M, 2M, 3M, 4M, 5M, 10M |
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| or 15M. The primary function of this setting is to limit the uplink bandwidth for the device |
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| internal system, signaling and NATed traffic. Example: When 512k is configured, there |
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| will be at least 512kbps limited for internal system, signaling and NATed traffic. Voice or |
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| RTP stream will never be limited. See figure 3. |
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| Downlink Bandwidth |
| The maximum downlink bandwidth permitted by the device. This function is disabled by |
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| default. The total bandwidth can be set as: 128K, 256K, 512K, 1M, 2M, 3M, 4M, 5M, 10M |
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| or 15M. The primary function of this setting is to limit the download bandwidth for the |
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| device internal system, signaling and NATed traffic. Example: if 128 is configured, there |
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| will be at least 128kbps limited for internal system, signaling and NATed traffic. Voice or |
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| RTP stream will never be limited. See figure 3. |
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| Enable UPnP |
| When set to “Yes”, the HT502 acts as an UPnP gateway for your UPnP enabled |
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| applications. UPnP = “Universal Plug and Play” |
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| Reply to ICMP on WAN |
| Default is No. When set to “Yes”, the HT502 responds to the PING command from other |
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| Port |
| computers, but is also made vulnerable to DOS attacks. |
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| WAN Side HTTP/Telnet |
| Default is No. When set to “Yes”, the user can access the web configuration pages |
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| Access |
| through the WAN port, instead of through the PC port. Warning: this configuration is less |
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| secure than the default option. |
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| Cloned WAN MAC |
| This allows the user to change/set a specific MAC address on the WAN interface. |
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| Address: |
| Note: Set in Hex format |
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| Enable LAN DHCP |
| When set to “Yes”, device will function as a simple router and LAN port will provide IP |
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| addresses to internal network. Connect the WAN port to ADSL/Cable modem or any |
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| other equipment that provides access to public Internet. |
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| LAN DHCP Base IP |
| Base IP Address for a LAN port. Default factory setting is 192.168.2.1. |
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| Note: When the device detects WAN IP is conflicting with LAN IP, the LAN base IP |
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| address will be changed based on the network mask |
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| increased by 1. For example; 192.168.2.1 will be changed to 192.168.3.1 if net mask is |
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| 255.255.255.0. Then the device will reboot |
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| LAN DHCP Start IP |
| Default value is 100. The last segment of IP address assigned to the HT50x in the LAN |
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| Network. Default configuration assigns IP address (to local network devices) starting from |
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| 192.168.2.100. |
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| LAN DHCP End IP |
| Default value is 199. This parameter allows a user to limit the number of local network |
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| devices connected to the internal router. Default configuration assigns IP address (to |
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| devices connected to the LAN port) in a range from 192.168.2.100 up to 192.168.2.199. |
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| LAN Subnet Mask |
| Sets the LAN subnet mask. Default value is 255.255.255.0 |
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| LAN DHCP Base IP: |
| Base IP address for the LAN port, which functions as default gateway for its LAN. Default |
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| value is 192.168.2.1 |
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| DHCP IP Lease Time |
| Default value is 120 hrs (5 days). The length of time the IP address is assigned to the |
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| LAN clients. Value is set in units of hours. |
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| DMZ IP: |
| This function forwards all WAN IP traffic to a specific IP address if no matching port is |
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| used by HT502 or in the defined port forwarding. |
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Grandstream Networks, Inc. | Page 18 of 32 |
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| Firmware Version 1.0.4.2 | Last Updated: 06/2011 |
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