Gets or sets 'duration' parameter value. The 'duration' parameter indicates how long the called party will be reachable starting at the initial time of availability. If no duration parameter is given, the service is assumed to be available indefinitely. Value -1 means not specified.

public int Duration { get; set; }

Public Property Duration As Integer
	Get
	Set

public:
property int Duration {
	int get ();
	void set (int value);
}

member Duration : int with get, set