2.1.3.3 Call WaitingDescriptionUsed to inform a busy extension that another incoming call is waiting. The busy extension user can answerthe second call by disconnecting the current call or placing it on hold. This feature is also known as Busy StationSignalling (BSS).The following notification method can be assigned for each extension depending on the call waiting and thetelephone type:a. Call Waiting Tone: Tone from the handset or built-in speakerb. OHCA: Voice from the built-in speakerc. Whisper OHCA: Voice from the handsetd. Off: No notification.Call TypeNotification MethodDPT IP-PT Other TelephoneIntercom Call Call Waiting tone/OHCA/Whisper OHCA/OffCall Waiting tone/Whisper OHCA/OffCall Waiting tone/OffTrunk Call*1 Call Waiting tone/Off*1 Including a doorphone call, call via an incoming call distribution group, and a trunk call transferred from another extension.Conditions• Automatic Call WaitingThrough system programming, it is possible to select whether a call waiting tone is automatically sent tothe extension when receiving trunk calls, doorphone calls, external sensor calls and hold-recall calls.Through system programming, it is also possible to select whether extensions will receive Automatic CallWaiting from intercom calls.• Call Waiting for an extension in a UM group or in a VM group (DTMF/DPT) is not available.• Data Line SecuritySetting Data Line Security cancels the Call Waiting setting. (® 2.11.5 Data Line Security)• Call Waiting ToneA PT user can hear different Call Waiting tones for trunk call and intercom call if "Tone 2" has been selectedthrough personal programming (Call Waiting Tone Type Selection). If "Tone 1" has been selected, thesame Call Waiting tone will be heard for both trunk call and intercom call.All Call Waiting tone patterns have a default (® 6.2.1 Tones/Ring Tones).• Caller InformationWith the Call Waiting tone, the caller’s information flashes on the display for five seconds, followed by a10-second pause, then flashes again for five seconds.• Call Waiting from the Telephone CompanyBesides the Call Waiting service within the PBX, the Call Waiting tone offered by an analogue line fromthe telephone company informs the extension user of another incoming trunk call that is waiting. He cananswer the second call by disconnecting the current call or placing it on hold using EFA (® 2.11.7 ExternalFeature Access (EFA)). For details, consult your telephone company.Call Waiting Caller ID (Visual Caller ID):When using the call waiting tone supplied by the telephone company over analogue lines, the waitingcaller’s telephone number can be received. The number will flash on the display for five seconds, followedby a 10-second pause, then flash again for five seconds.Note that the received caller information may not be displayed on telephones or wireless phones connectedto SLT ports.46 Feature Guide2.1.3 Incoming Call Indication Features
