1.1 General FeaturesFeature Manual 213.1.3 Flexible Button Assignment—FWD/DND, Message, or Caller ID Indication—Personal/Common button1.1.9 Busy Station Signaling (BSS)DescriptionWhen an extension user attempts to call a busy extension (i.e., an extension that is ringing or having aconversation), a call waiting tone will be sent to the called extension to indicate another call is waiting.Conditions• This feature functions only if the called extension has activated Call Waiting. If it is activated, the callingextension user will hear a ringback tone.• One of 2 call waiting tones can be selected through personal programming (Call Waiting Tone TypeSelection).Feature Manual References1.1.27 Call Waiting2.2.1 Tones/Ring TonesOperating Manual References1.3.8 Busy Station Signaling (BSS)3.1.2 Personal Feature Assignment—Call Waiting Tone Type Selection1.1.10 Call Forwarding (FWD)—SUMMARYDescriptionExtension users can forward their calls to preset destinations. There are 4 Call Forwarding (FWD) modes,described below.Mode DescriptionAll Calls All calls are forwarded to another extension.Busy/No Answer All calls are forwarded to another extension when the extension user'sline is busy, or when the user does not answer within a preprogrammedtime period ( [202] Call Forwarding Start Time).Follow Me When an extension user fails to set this feature before leaving his orher desk, this feature can be set from the destination extension.To Outside (CO) Line All calls are forwarded to an outside party, provided this feature isenabled for each extension through system programming ( [607]Call Forwarding to CO Line).