This object reflects the current status of all the front panel LED's on all the slot of the Avidia Shelf. The Semantics of the octet-string is as described below. It is set of following structure. First Octet - SlotID Second Octet - CardType PgDSLAMUnitType Third Octet - Number of Bytes Used by the Slot LED Status. Fourth Octet - Status of LED for port1 Fifth Octet - Status of LED for port2 .... .... till depending on the Number of port on the card. LED Status in encoded as a bit map described below Bits 0-3 represent the State (0000-off,0001-on,0011-Blinking) Bits 4-7 represent the Color (0000-clear,0001-green,0011-yellow,0100-red)

For AMC two octet will be used to represent the LED Status Lower octet: bit 0 : critical alarm LED bit 1 : major alarm LED bit 2 : minor alarm LED bit 3 : power minor alarm LED bit 4 : input power 1 bit 5 : input power 2 bit 6 : fuse alarm 1 bit 7 : fuse alarm 2

Upper octet: bit 0 : Alarm Cut Off bit 1 : abnormal bit 2 : fault bit 3 : external alarm bit 4 : fan alarm 1 bit 5 : fan alarm 2 bit 6 : fan alarm 3 bit 7 : fan alarm 4

If a bit has a value of '1' then the correspondant LED is on and '0' is off. For OC-3 each port will have three LED's Tx,Rx,Sync and one APS