Gets the In-Reply-To header fields which enumerates the Call-IDs that this call references or returns.

public SIP_MVGroupHFCollection<SIP_t_CallID> InReplyTo { get; }

Public ReadOnly Property InReplyTo As SIP_MVGroupHFCollection(Of SIP_t_CallID)

public:
SIP_MVGroupHFCollection<SIP_t_CallID^>^ InReplyTo {
	SIP_MVGroupHFCollection<SIP_t_CallID^>^ get ();
}