1.9.3 Receiving Call Waiting (Call Waiting/Off-hook CallAnnouncement [OHCA]/Whisper OHCA)During a conversation, you can be informed of a call waiting with a tone or voice announcement through yourbuilt-in speaker or handset. (Default: Disable—No call [Intercom calls]/No tone [Outside calls])Call Waiting Tone:a waiting tone through the built-in speaker of PT/handset of SLT. To change the tone from PT, refer to"3.1.2 Settings on the Programming Mode".OHCA:a voice announcement through the built-in speakerWhisper OHCA:a voice announcement through the handsetTo set/cancel for intercom calls (Manual Call Waiting)Off-hook.Enter 0 to 3 as you desire.On-hook.Enter 731.PT/SLT/PS/SIP Extn./S-PS No callToneOHCAWhisper OHCA01OR2OR3OR3 17 C.ToneTo set/cancel for outside calls (Automatic Call Waiting)PT/SLT/PS/SIP Extn./S-PSOff-hook.Enter 0 or 1.On-hook.Enter 732.3 27 C.ToneNo toneToneOR01• OHCA is only available with certain digital proprietary telephones.• Whisper OHCA is only available with certain digital proprietary telephones and IP proprietarytelephones. In addition, both you and the other party must use supported telephones.194 User Manual1.9.3 Receiving Call Waiting (Call Waiting/Off-hook Call Announcement [OHCA]/Whisper OHCA)