The decAtmSlotLedProgram string is a sequence of instructions for the LED state. The LED constantly repeats the program. Each LED state is represented by a two octet sequence where the value of the first octet of the pair indicates the color of the LED, and the value of the second octet of the pair indicates the duration in which that color will be present. + | Color | Duration | | Color | Duration | + The 'color' octet may have one of the following values: 0 - off 1 - other 2 - red 3 - yellow 4 - green 5 - blue 6 - red-blinking 7 - yellow-blinking 8 - blue-blinking 9 - green-blinking The value 'off' indicates that the LED is off. The value 'other' indicates a color not covered by any others in the list. The value of the second octet in each pair indicates the duration in which that color will be present. A value of zero indicates that the LED is off. A value of 0xff indicates that the LED is always on. Values in between 0 and 0xff indicate the duration in 10 ms ticks. A zero length string may be returned if the LED is 'not present'. This indicates that the LED is currently not visible. Activity LEDs are a special case. Activity LEDs are defined as LEDs which blink whenever data is received on the line. They are typically on solid under heavy activity. Since these LEDs can change rapidly, the following rules apply: o The initial state of activity LEDs is off. o If the line shows activity any time in a 10 second period, then the LED is shown as on. o If the line shown inactivity any time in a 10 second period, then the LED is shown as off. See the 'pcomLedProgram' object in the DECHUB900-COMMON MIB for examples.