TP-Link Technologies Co. Ltd. TDW8980V1 Manuale Utente

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TD-W8980 
N600 Wireless Dual Band Gigabit ADSL2+ Modem Router User Guide
 
36 
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H323 ALG: To allow H323 clients and servers to transfer data across NAT, click 
Enable
• 
SIP ALG: To allow SIP clients and servers to transfer data across NAT, click Enable
Click the Save button to save your settings. 
4.5.7  DSL Settings 
Choose “Advanced Setup”Æ“DSL Settings”, you can select the DSL Modulation Type and 
Annex Type in the next screen. The DSL feature can be selected when you meet the physical 
connection problem. Please check the proper settings with your Internet service provider. 
 Figure 4-20 
¾
  DSL Modulation Type: Select the DSL operation Modulation Type which your DSL 
connection uses. 
¾
  Annex Type: Select the DSL operation Annex Type which your DSL connection uses. 
Click the Save button to save your settings. 
4.5.8  IPSec VPN 
Choose “Network”Æ“IPSec VPN”, you can Add/Remove or Enable/Disable the IPSec tunnel 
connections on the screen as shown in Figure 4-21.   
 
Figure 4-21 
This section will guide you to configure a VPN tunnel between two TD-W8980s. The topology is as 
follows.