Users can offer calls to parties at a busy destination. The busy user receives indication of a call offer, while the calling party receives indication that a call offer has been invoked. The called user has the choice of clearing the current call and being re-rung, putting their current call on hold and accepting the offered call, or ignoring the offered call. The called user will receive the Calling Line Identification (unless CLI Restriction is used) and Calling Name Identification of the calling party.
This feature works similarly to DPNSS Call Offer in that the user who offers the call and receives a busy notification may choose to camp on or invoke consultation. Immediate camp on is invoked if the calling party is transferred to a busy destination until the Campon Recall Timer times out. This feature is not supported when a busy user is reached as a result of diversions that included at least one Call Forward No Reply.
Camp-on tone security can prevent users from hearing the camp-on or call waiting tone; therefore, if any party involved in the call has this option enabled, no camp-on tone is returned. The Class of Service of the calling party controls access to Call Offer. Executive Intrusion is not supported with this feature. Call Offer with path retention is supported when invoked from another manufacturer's QSIG switch (it is not currently invoked by MiVoice Business).