Connecting To A Door Phone And A Door Lock; Figure 7.15 Rj-45 Port Of 8Dli Board (For Door Phone); Figure 7.16 Rj-45 Port Of 16Dli Board (For Door Phone); Figure 7.17 Rj-45 Port Of 16Dli2 Board (For Door Phone) - Samsung OfficeServ 7400 Installation Manual