The following settings can be set via the Yeastar web-interface:

Open the web-interface and go to Extension and Trunk - Extension - Edit - Phone

• Web Language
• Phone Language
• Signal Tones
• Admin Phone Password
• Call waiting yes/no
• Auto Answer yes/no
• Primary NTP Server
• Secondary NTP Server
• Time Format
• Date Format
• Transfer Mode via Function key
• Time Zone
• enable uaCSTA Control
• Wallpaper
• Distinctive Ringtone
• Codecs
• LDAP Directory
• Function Keys