8.27 FUNCTION KEY / Softkey .................................................................................................. 78
9 Advanced Features ......................................................................................................................... 79
9.1 VPN ....................................................................................................................................... 79
9.1.1 L2TP .................................................................................................................................. 79
9.1.2 OpenVPN ........................................................................................................................... 80
10 Trouble Shooting .......................................................................................................................... 81
10.1 Get Device System Information .......................................................................................... 81
10.2 Upgrade to the Latest Software .......................................................................................... 81
10.3 Reboot Device .................................................................................................................... 82
10.4 Reset Device to Factory Default ......................................................................................... 82
10.5 Network Packets Capture ................................................................................................... 82
10.6 Entering Post Mode and Recover System Image .............................................................. 82
10.7 Common Trouble Cases ..................................................................................................... 84
Appendix I - Icon Illustration ............................................................................................................. 86
Appendix II – Text Input from Keypad ............................................................................................. 88
Appendix III – LED Definition ............................................................................................................ 90