About This Guide1About This GuideYou can turn Yealink SIP-T41S/T42S IP phone to the DECT desk phone (hereinafter referred to as DDphone) by using a DECT dongle kit DD10K. The DD phone acts as a handset for the W60B base station.This guide provides everything you need to use your new DD phone quickly. Firstly, verify with yoursystem administrator that the network is ready for phone configuration. Also, be sure to read the GettingStarted section in this guide and theYealink Products Regulatory Notices guide on the phone’s supportpage before you set up and use your DD phone.In This GuideChapters in this guide include: Chapter 1 About This Guide Chapter 2 Getting Started Chapter 3 Overview Chapter 4 Basic Operations Chapter 5 Phone Settings Chapter 6 Call Features Chapter 7 Troubleshooting Chapter 8 Appendix