Index405IndexNumeric180 Ring Workaround 176802.1X Authentication 324AAbout This Guide vAccount Lock 308Acoustic Echo Cancellation 290Action URI 228Administrator Password 302Allow Mute 195Allow Trans Exist Call 185Always On Line 171Appendix 365Appendix A: Glossary 365Appendix B: Time Zones 366Appendix C: Trusted Certificates 368Appendix D: SIP 369Appendix E: SIP Call Flows 378Audio Codecs 282Auto Answer 168Auto-Logout Time 304Automatic Gain Control 291BBackground Noise Suppression 291Backlight 89Bluetooth 91Boss/Admin Feature 201Branch Office Resiliency 54BToE 211Busy Tone Delay 173CCalendar 205Call Forward 180Call Hold 178Call Number Filter 186Call Waiting 162Capturing Packets 348CDP 236Comfort Noise Generation 293Configuration Files 21Configuration Methods 20Configuring Advanced features 217Configuring Basic Features 67Configuring Basic Network Parameters 26Configuring Security Features 299Connecting the Skype for Business Phones 11Contrast 87Conventions Used in Yealink Documentations viDDHCP 26DHCP Option 30DHCP VLAN 243Dial-now 130Dial Plan 129Dial Search Delay 157Directory 134Documentations vDTMF 188Dual Headset 279EE911 Location Tip 198Early Media 176Enabling the Watch Dog Feature 351Encrypting Configuration Files 319EXP40 Expansion Module 214Expansion Module 9GGetting Information from Status Indicators 352
