| Contents | vii
Configuring SIP IP Call by Proxy...................................................................................................................................180
Configuring Ringback Timeout...................................................................................................................................... 180
Configuring the Auto Refuse Timeout........................................................................................................................181
Auto Answer...........................................................................................................................................................................181
Answering a Call Automatically When not in a Call................................................................................181
Answering Multiple Calls Automatically....................................................................................................... 182
Muting Auto-Answered Calls..........................................................................................................................................182
Muting Auto-Dialed Calls.................................................................................................................................................182
DND (Do Not Disturb).......................................................................................................................................................183
Enabling DND when Not in a Call..................................................................................................................183
Enabling DND during an Active Call............................................................................................................. 183
Enabling Fast Audio Call for CP960 Conference Phone...................................................................................... 184
Managing the Directory............................................................................ 184
Local Directory...................................................................................................................................................................... 184
Adding Local Contacts and Conference Contacts....................................................................................184
Importing a Local Contact List.........................................................................................................................186
Exporting Local Contact List..............................................................................................................................187
Editing Local Contacts..........................................................................................................................................188
Deleting Local Contacts.......................................................................................................................................188
Yealink Cloud Contacts......................................................................................................................................................189
Enterprise Directory.............................................................................................................................................................189
LDAP.......................................................................................................................................................................................... 190
LDAP Attributes.......................................................................................................................................................190
Configuring LDAP...................................................................................................................................................191
Meeting Whitelist.................................................................................................................................................................193
Adding Meeting Whitelist.................................................................................................................................. 194
Deleting the Meeting Whitelist........................................................................................................................194
Meeting Blacklist.................................................................................................................................................................. 194
Adding Meeting Blacklist....................................................................................................................................194
Deleting the Meeting Blacklist......................................................................................................................... 194
Managing the Call Log.............................................................................. 195
Saving History Record........................................................................................................................................................195
Adding a History Record to the Local Directory.................................................................................................... 195
Deleting History Records..................................................................................................................................................195
Deleting a History Record..................................................................................................................................196
Deleting Multiple History Records..................................................................................................................196
Deleting All History Records............................................................................................................................. 196
Placing Calls from Call History.......................................................................................................................................197
Placing a Call.............................................................................................. 197
Placing a Call by Entering a Number..........................................................................................................................197
Placing a Call from the Search Result.........................................................................................................................198
Placing a Call from the Search Result by CTP20....................................................................................................199
Editing Numbers Before Calling.................................................................................................................................... 199
Editing Numbers before Calling by CTP20............................................................................................................... 199
Configuring the Security Features........................................................... 200
Collaboration Data Security Control............................................................................................................................200
Configuring the Auto Logout Time..............................................................................................................................201
Transport Layer Security (TLS)........................................................................................................................................201
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