This kit is used to upgrade a R1.3, R2.1,R2.2, or R2.3 OC3/STM1 to support release 3.0 and higher. NOTE: This kit is for cards on a 3x PCB platform only. All other cards must use the 90-4906-01 kit. Factory shipments of OC3/STM1 R2.3 and higher cards, 90-

This kit is used to upgrade a R1.3, R2.1,R2.2, or R2.3 OC3/STM1 to support release 3.0 and higher. NOTE: This kit is for cards on a 3x PCB platform only. All other cards must use the 90-4906-01 kit. Factory shipments of OC3/STM1 R2.3 and higher cards, 90-2188-2X/3X and 90-2305-2X/3X, ship with the memory module 2 installed and do not require this upgrade kit. The 3x platform may be identified by: a) Labelling on the pcb, e.g 87-0807-01-3x. b) The front panel 90# label; the following manufacturing codes identify cards using the 3x platform: 90-2188 & 2305-01 - Codes T, U and V 90-2188 & 2305-02 - Codes T, U and V 90-2188 & 2305-03 - Codes P, R, and T 90-2188 & 2305-04 - Codes P, R and T 90-2188 <(><<)>(>&<(><<)>)> 2305-11 - Codes A, B, C, D, and E 90-2188 & 2305-12 - Codes A, B, C, D, and E 90-2188 & 2305-13 - Codes A, B, C, D, and E 90-2188 & 2305-14 - Codes A, B, C, and D.