EXP40 Expansion Module187The Yealink EXP40 is ideal for receptionists, administrative assistants, call center agents,power-users, and executives who need to place a large volume of calls on a regularbasis. When your SIP-T46G is registered with a Skype for Business Server, you can assignSkype for Business contacts to line keys on your EXP40, so that you can quickly callcontact by pressing the corresponding line key. You can also monitor your Skype forBusiness contacts’ presence status from your expansion module. For more informationon contact’s presence, refer to Changing Presence Status on page 25.This chapter explains how to use the EXP40. Topics include: Connecting the EXP40 EXP40 Hardware Component Instructions Assigning Skype for Business Contacts to the EXP40 Using the EXP40If you want to use an EXP40, physically connect the EXP40 to the phone firstly.The EXP40 applies to SIP-T46G IP phone. To easily connect the EXP40 to the phone,please unplug the phone stand from the SIP-T46G IP phone.To unplug the stand from the SIP-T46G IP phone:1. Unplug the power adapter and Ethernet cable from the IP phone.2. Unplug the handset attached to the IP phone.3. Turn the IP phone over and lay it on a non-slip, flat surface.4. Unplug the stand from the IP phone.To connect the EXP40:1. Turn over the phone and the expansion module, and lay them on a flat, non-slipsurface.2. Connect the EXP40 and the IP phone using the supplied connecting sheet andscrews.