设备的符号不表示任何制造商的类型或型号。它们代表在电缆系统中操作的设备的功能。这些符号允许在其轮廓内或轮廓附近轻松添加型号或型号。如果使用了此类型号或类型名称，则应在出现符号的图纸的图例页上说明这些名称。

The symbols for devices do not indicate types or model numbers of any manufacturer. They represent the function of the device operated within a cable system. The symbols permit easy addition of model or type numbers within or near their outline. If such model or type designations are used, an explanation of these designations should be placed on a legend sheet for the drawing on which the symbols appear.