Grandstream Networks HT503 FXS/FXO Benutzerhandbuch

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Range: 0 – 3600, default is 300 
Uplink Bandwidth 
The maximum uplink bandwidth permitted by the device.  This function is disabled by 
default. The total bandwidth can be set as: 128K, 256K, 512K, 1M, 4M or 10M.   
For example if 64 is configured, there will be at least 64kbps reserved for VoIP.  The 
primary function of this setting is to reserve bandwidth for VoIP. 
Downlink Bandwidth 
The maximum downlink bandwidth permitted by the device.  This function is disabled 
by default. The total bandwidth can be set as: 128K, 256K, 512K, 1M, 4M or 10M.   
For example if 128 is configured, there will be at least 128kbps reserved for VoIP.  The 
primary function of this setting is to reserve bandwidth for VoIP. 
Enable UPnP 
When set to “Yes”, the HT503 acts as an UPnP gateway for your UPnP enabled 
applications.  UPnP = “Universal Plug and Play” 
Reply to ICMP on WAN 
Port 
When set to “Yes”, the HT503 responds to the PING command from other computers, 
but is also made vulnerable to DOS attacks.  Default is No
WAN Side HTTP/Telnet 
Access 
When set to “Yes”, the user can access the web configuration pages through the WAN 
port, instead of through the PC port.  Warning: this configuration is less secure than the 
default option.  Default is No
Cloned WAN MAC 
Address: 
This allows the user to change/set a specific MAC address on the WAN interface.  
Note: Set in Hex format 
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 default gateway for its LAN. Default value 
is 192.168.2.1 
DHCP IP Lease Time 
The length of time the IP address is assigned to the LAN clients.  Value is set in units of 
hours.  Default value is 120 hrs (5 days).   
DMZ IP: 
 
This function forwards all WAN IP traffic to a specific IP address if no matching port is 
used by HT503 or in the defined port forwarding. 
Port Forwarding: 
Allows users to forward a matching (TCP/UDP) port to a specific LAN IP address with a 
specific (TCP/UDP) port. 
PSTN access code 
The code to access the PSTN line (Maximum 5 digits). Default is “*00”. 
PIN for PSTN calls 
PIN code to bridge from VoIP to PSTN (Maximum 8 digits, No Default) 
PIN for VoIP calls 
PIN code to bridge from PSTN to VoIP (Maximum 8 digits, No Default) 
Route Call to PSTN 
If the dialed digits match one of the specified prefix here, outbound calls will be initiated 
from PSTN line. This field is especially useful for emergency calls.   
Unconditional Call 
Forward to PSTN 
Calls are unconditionally forwarded to the specified PSTN phone number for all 
incoming VoIP calls on FXO port. 
Unconditional Call 
Forward to VoIP 
Calls are unconditionally forwarded to the specified VoIP phone number for all 
incoming PSTN calls.  
 
Grandstream Networks, Inc. 
HT503 User Manual 
Page 21 of 35  
 
Firmware 1.0.0.6 
Last Updated: 6/2007