Table of Contents1 Operation ................................................................................................131.1 Before Operating the Telephones .................................................................................141.1.1 For Your Safety ..............................................................................................................141.1.2 Important Safety Instructions ..........................................................................................191.1.3 Precautions ....................................................................................................................201.1.4 Data Security ..................................................................................................................221.1.5 Before Operating the Telephones ..................................................................................231.2 Making Calls ....................................................................................................................371.2.1 Basic Calling ...................................................................................................................371.2.2 Easy Dialling ...................................................................................................................421.2.3 Redial .............................................................................................................................451.2.4 When the Dialled Line is Busy or There is No Answer ...................................................461.2.5 Accessing the ISDN Service (ISDN Service Access) .....................................................551.2.6 Alternating the Calling Method (Alternate Calling—Ring/Voice) ....................................561.2.7 Calling without Restrictions ............................................................................................571.2.8 To Access Another Party Directly from Outside (Direct Inward System Access[DISA]) ............................................................................................................................581.2.9 Setting Your Telephone from Another Extension or through DISA (RemoteSetting) ...........................................................................................................................611.3 Receiving Calls ................................................................................................................621.3.1 Answering Calls ..............................................................................................................621.3.2 Answering Hands-free (Hands-free Answerback) ..........................................................631.3.3 Answering a Call Ringing at Another Telephone (Call Pickup) ......................................641.3.4 Answering a Call via an External Speaker (Trunk Answer From Any Station[TAFAS]) .........................................................................................................................651.3.5 Using the ANSWER/RELEASE Button ..........................................................................661.3.6 Identifying Malicious Calling Parties (Malicious Call Identification [MCID]) ....................681.4 During a Conversation ....................................................................................................691.4.1 Transferring a Call (Call Transfer) ..................................................................................691.4.2 Holding a Call .................................................................................................................741.4.3 Talking to Two Parties Alternately (Call Splitting) ..........................................................801.4.4 Answering Call Waiting ..................................................................................................821.4.5 Multiple Party Conversation ...........................................................................................881.4.6 Mute ...............................................................................................................................991.4.7 Letting Other People Listen to the Conversation (Off-hook Monitor) ...........................1001.4.8 Using the Headset (Headset Operation) ......................................................................1011.5 Using a PDN/SDN Button .............................................................................................1031.5.1 Primary Directory Number (PDN)/Secondary Directory Number (SDN)Extension ......................................................................................................................1031.6 Before Leaving Your Desk ...........................................................................................1071.6.1 Forwarding Calls ..........................................................................................................1071.6.2 Showing a Message on the Caller’s Telephone Display (Absent Message) ................1161.6.3 Preventing Other People from Using Your Telephone (Extension Dial Lock) ..............1181.7 Making/Answering an Announcement ........................................................................1201.7.1 Paging ..........................................................................................................................1201.7.2 Answering/Denying a Paging Announcement ..............................................................1221.7.3 Making a Conference Group Call .................................................................................1231.8 Using the Unified Messaging Features .......................................................................1301.8.1 What is the Unified Messaging system? ......................................................................1301.8.2 Logging in to and Configuring Your Mailbox ................................................................1321.8.3 Message Playback and Related Features ....................................................................1421.8.4 Sending Messages .......................................................................................................152User Manual 9Table of Contents