1. Connect the Headset cord into the Headset socket.Headset socket< Bottom view>Figure 2-108 Headset Socket (2-wire Multiline Telephone)PC(X) LAN(=)AN(=)Headset socket< Bottom view>Figure 2-109 Headset Socket (IP Multiline Telephone)• HW251N-A10-NEThis Item is made by Plantronics, inc.For the details of setting and operation, refer to the SL1100 Feature & Specifications Manual. (separateissue)The headset configuration is assigned using system programming.5.5 Installing the Doorphone Box5.5.1 Wall-Mounting the Doorphone1. Remove the screw on the front of the Doorphone Box.2. Remove the Wall-Mount bracket from the Doorphone Box.ISSUE 5.0 SL1100Hardware Manual 2-75