Yealink Auto provisioning User GuideivZero Touch ........................................................................................................................... 25Plug and Play (PnP) Server ............................................................................................... 27DHCP Options ..................................................................................................................... 28Phone Flash ......................................................................................................................... 29Update Mode ......................................................................... 31Power On ............................................................................................................................. 31Repeatedly.......................................................................................................................... 32Weekly ................................................................................................................................. 33Auto Provision Now ............................................................................................................ 34Multi-mode Mixed ............................................................................................................. 35SIP NOTIFY Message ......................................................................................................... 35Downloading and Verifying Configurations .......................... 37Downloading Configuration Files ..................................................................................... 37Resolving and Updating the Configurations .................................................................. 37Verifying Configurations .................................................................................................... 38Troubleshooting ...................................................................... 41Glossary .................................................................................. 43Appendix ................................................................................ 45Configuring an FTP Server ................................................................................................ 45Preparing a Root Directory ............................................................................................ 45Configuring an FTP server .............................................................................................. 46Configuring an HTTP Server .............................................................................................. 48Preparing a Root Directory ............................................................................................ 48Configuring an HTTP Server .......................................................................................... 48Configuring a DHCP server ............................................................................................... 51Customizing a Ringtone Using Cool Edit Pro .................................................................. 59Customizing a Logo File Using PictureExDemo .............................................................. 60Description of Configuration Parameters in CFG Files .................................................. 61