4-20 DPT FeaturesB 4.2 DPT FeaturesBusy Station Signaling (BSS)The busy extension that you called will hear three beeps and know that you arewaiting.Soft Button OperationIf you make an intercom call and hear a busy tone;1. Press the BSS (S1) button.• Wait for an answer and talk.Standard OperationIf you make an intercom call and hear a busy tone;1. Dial 1.• Wait for an answer and talk.Conditions• To answer the signal from the calling extension, see “Call Waiting” in this manual.• If “BSS” is not displayed or you hear a reorder tone when you set this feature, thisfeature will not be set at the called party. This feature is only available if the calledextension has set the “Call Waiting” feature.• Depending on the party’s telephone, the “Off-Hook Call Announcement (OHCA)” or“Whisper OHCA” function can be applied. You can talk to the party through thespeaker and the microphone while the party is having another conversation using thehandset.Feature ReferencesCall WaitingOff-Hook Call Announcement (OHCA)Whisper OHCA1S 1 S 2 S 3BSS11