private static void Call(Player sender, string number)
 {
     try
     {
         PhoneHelper.Call(sender, number);
     }
     catch (Exception e)
     {
         Chat.ErrorChat(sender, "L'appel a échoué : " + e.Message);
     }
 }
 private static void CallContact(Player sender, String name)
 {
     try
     {
         PhoneHelper.Call(sender,
                          PhoneHelper.GetContactByName(name, PhoneHelper.GetDefaultPhone(sender.ActiveCharacter)).Number);
     }
     catch (Exception e)
     {
         Chat.ErrorChat(sender, "Le contact n'a pas pu être appelé : " + e.Message);
     }
 }