| NAT UDP Timeout |
| NAT TCP idle timeout in seconds. Connection will be closed after preconfigured, |
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| timeout if not refreshed. |
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| 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, |
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| 10M or 15M. The primary function of this setting is to limit the uplink bandwidth for the |
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| device internal system, signaling and NATed traffic. Example: if 512k is configured, |
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| there will be at least 512kbps limited for internal system, signaling and NATed traffic. |
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| Voice or 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 |
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| by default. The total bandwidth can be set as: 128K, 256K, 512K, 1M, 2M, 3M, 4M, 5M, |
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| 10M or 15M. The primary function of this setting is to limit the download bandwidth for |
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| the device internal system, signaling and NATed traffic. Example: if 128 is configured, |
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| there will be at least 128kbps limited for internal system, signaling and NATed traffic. |
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| Voice or RTP stream will never be limited. See figure 3. |
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| Enable UPnP |
| When set to “Yes”, the HT503 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 |
| When set to “Yes”, the HT503 responds to the PING command from other computers, |
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| Port |
| but is also made vulnerable to DOS attacks. Default is No. |
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| WAN Side HTTP/Telnet |
| When set to “Yes”, the user can access the web configuration pages through the WAN |
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| Access |
| port, instead of through the PC port. Warning: this configuration is less secure than the |
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| default option. Default is No. |
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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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| LAN DHCP Base IP |
| Base IP for the LAN port, which functions as default gateway for its LAN. Default value |
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| 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 is 100 |
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| LAN DHCP End IP |
| Default is 199 |
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| LAN Subnet Mask |
| Sets the LAN subnet mask. Default value is 255.255.255.0 |
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| DHCP IP Lease Time |
| The length of time the IP address is assigned to the LAN clients. Value is set in units of |
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| hours. Default value is 120 hrs (5 days). |
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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 HT503 or in the defined port forwarding. |
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| Port Forwarding: |
| Allows users to forward a matching (TCP/UDP) port to a specific LAN IP address with a |
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| specific (TCP/UDP) port. |
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| PSTN access code |
| The code to access the PSTN line (Maximum 5 digits). Default is “*00”. Any time user |
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| can make PSTN calls from the analog phone connected to FXS port. By default, user |
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| may pick up the phone, dial *00, and after obtaining PSTN line ( user will hear regular |
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| dial tone) normal PSTN dialing is allowed. |
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| PIN for PSTN calls |
| PIN code to bridge from VoIP to PSTN (Maximum 8 digits, No Default) |
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| PIN for VoIP calls |
| PIN code to bridge from PSTN to VoIP (Maximum 8 digits, No Default) |
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| Unconditional Call |
| Calls are unconditionally forwarded to the specified PSTN phone number for all |
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| Forward to PSTN |
| incoming VoIP calls on FXO port. |
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| Unconditional Call |
| Calls are unconditionally forwarded to the specified VoIP phone number for all |
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| Forward to VoIP |
| incoming PSTN calls. Each incoming call from the PSTN will first ring the analog phone |
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| connected to FXS port. This call from the PSTN network will be forwarded to the |
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| preconfigured VoIP extension if it is not answered. User can configure the number of |
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| rings before forwarding calls to the VoIP extension. Configure number of rings using |
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| the “number of rings” parameter located in the FXO Port Configuration page. |
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| Grandstream Networks, Inc. |
| HT503 User Manual | Page 21 of 38 |
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| Firmware 1.0.4.2 | Last Updated: 06/2011 |
|
