Yealink Skype for Business HD IP Phones Administrator Guide362Display IssuesWhy is the LCD screen blank?Do one of the following: Ensure that the Skype for Business phone is properly plugged into a functional AC outlet. Ensure that the Skype for Business phone is plugged into a socket controlled by a switchthat is on. If the Skype for Business phone is plugged into a power strip, try plugging it directly into awall outlet. If your phone is PoE powered, ensure that you are using a PoE-compliant switch or hub.Directory IssuesWhat is the difference between a Skype for Business directory and alocal directory?The Skype for Business directory on your phone displays all Skype for Business contacts on yourSkype for Business client. While a local directory is placed on the phone flash. When you signinto different Skype for Business phones using the same account, the phone will display thesame Skype for Business contacts, while a local directory can only be used by a specific phone.Time and Date IssuesWhy doesn’t the Skype for Business phone display time and datecorrectly?Check if the Skype for Business phone is configured to obtain the time and date from the NTPserver automatically. If your phone is unable to access the NTP server, configure the time anddate manually.System Log IssuesWhy cannot I export the system log to a syslog server?Do one of the following: Ensure that the syslog server supports saving the syslog files exported from Skype forBusiness phone. Ensure that you have configured the syslog server address correctly via web user interface