/// <summary>
/// Deletes call from the call history.
/// </summary>
/// <param name="call">The call should be deleted from the call history.</param>
public void DeleteCall(Call call)
{
this.CallHistory.Remove(call);
}
/// <summary>
/// Adds call to the call history.
/// </summary>
/// <param name="call">The call should be added to the call history.</param>
public void AddCall(Call call)
{
this.CallHistory.Add(call);
}
