Administrator‘s Guide for Yealink VC110 Video Conferencing EndpointxiiConfiguring Security Features ...............................................203User Mode ................................................................................................................................... 203Administrator Password .............................................................................................................. 204Web Server Type.......................................................................................................................... 206Transport Layer Security.............................................................................................................. 208Secure Real-Time Transport Protocol .......................................................................................... 215H.235 ............................................................................................................................................. 218Attack Defense in Public Network .............................................................................................. 219Abnormal Call Answering ................................................................................................... 220Configuring Safe Mode Call ............................................................................................... 221Endpoint Maintenance ..........................................................223Upgrading Firmware................................................................................................................... 223Importing/Exporting Configuration ............................................................................................ 224Resetting to Factory ..................................................................................................................... 224SNMP ............................................................................................................................................ 226Troubleshooting .....................................................................231Troubleshooting Methods ........................................................................................................... 231Viewing Log Files .................................................................................................................. 231Capturing Packets ................................................................................................................ 234Getting Information from Status Indicators........................................................................ 237Analyzing Configuration Files ............................................................................................. 237Viewing Call Statistics .......................................................................................................... 238Using Diagnostic Methods .................................................................................................. 238Troubleshooting Solutions ........................................................................................................... 240General Issues ...................................................................................................................... 241Camera Issues ...................................................................................................................... 243Video & Audio Issues............................................................................................................ 244Endpoint Maintenance ........................................................................................................ 245Appendix ...............................................................................247Appendix A: Time Zones ............................................................................................................ 247Appendix B: Trusted Certificates ................................................................................................ 250Index ......................................................................................253