Draytek Vigor2910 Series User Manual page 10

4.2 Create a Remote Dial-in User Connection Between the Teleworker and Headquarter...... 224
4.3 QoS Setting Example.......................................................................................................... 228
4.4 LAN - Created by Using NAT ............................................................................................. 232
4.5 Calling Scenario for VoIP function ...................................................................................... 234
4.5.1 Calling via SIP Sever .................................................................................................... 234
4.5.2 Peer-to-Peer Calling ..................................................................................................... 236
4.6 Upgrade Firmware for Your Router ..................................................................................... 237
4.7 Request a certificate from a CA server on Windows CA Server ......................................... 239
4.8 Request a CA Certificate and Set as Trusted on Windows CA Server ............................... 243
4.9 VPN Backup Application ..................................................................................................... 245
4.10 ERD Mechanism for VPN Backup .................................................................................... 249
5
Trouble Shooting ...........................................................................................251
5.1 Checking If the Hardware Status Is OK or Not.................................................................... 251
5.2 Checking If the Network Connection Settings on Your Computer Is OK or Not ................. 251
5.3 Pinging the Router from Your Computer ............................................................................. 254
5.4 Checking If the ISP Settings are OK or Not ........................................................................ 256
5.5 Problems for 3G Network Connection ................................................................................ 257
5.6 Backing to Factory Default Setting If Necessary ................................................................ 258
5.7 Contacting Your Dealer ....................................................................................................... 259
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Vigor2910 Series User's Guide