1.10 Conversation Features134 Feature Guide1.10.4 Headset OperationDescriptionThis PBX allows the use of headset-compatible PTs. A PT user can talk to another party without lifting thehandset.For connection and operation, refer to the Operating Instructions for the headset.This feature is also known as Handset/Headset Selection.Conditions• Hardware Requirement: An optional headset.• If headset mode is on, pressing the SP-PHONE button activates the headset, not the built-in speaker.• To set headset mode on a DPT, use personal programming (Headset Operation) or press the Headsetbutton. To set headset mode on an APT, use the handset/headset selector provided on the set and/oron the headset.• Headset ButtonA flexible button on a DPT can be customised as a Headset button. It is possible to assign a Headsetbutton to a flexible button on an APT, but the button will not function.• Answer/Release ButtonA flexible button can be customised as an Answer button or a Release button. Such buttons are usefulfor headset operation. It is possible to answer an incoming call by pressing an Answer button. Whilehearing the Call Waiting tone during a conversation, pressing an Answer button enables one to answerthe second call by placing the current call on hold. Pressing a Release button enables one to disconnectthe line during or after conversation, or to complete a Call Transfer.• It is possible to switch from headset mode to hands-free mode or vice versa during a conversation bypressing the Headset button.• Headset users cannot use the following features:– Automatic Redial (→ 1.6.1.4 Last Number Redial)– Receiving OHCA (→ 1.7.4.3 Off-hook Call Announcement (OHCA))– Receiving Whisper OHCA (→ 1.7.4.4 Whisper OHCA)PT Programming Manual ReferencesNoneFeature Guide References1.19.2 Flexible ButtonsUser Manual References1.3.5 Using the ANSWER/RELEASE Button1.4.8 Using the Headset (Headset Operation)3.1.2 Settings on the Programming Mode