MDA -7450 2-PT OC48/STM16 - SFP 7450 ESS 2-port SONET/SDH OC-48c/STM-16c MDA. Accepts up to two (2) SFP OC48-xx Optics Modules

OS - 7450 ESS-1 R5.0 OS LICENSE 7450 ESS Operating Software for ESS-1 - Release 5.0, includes one (1) programmed CompactFlash card with the OS

OS - 7450 ESS-1 R6.0 OS LICENSE 7450 ESS Operating Software for ESS-1 - Release 6.0, includes one (1) programmed CompactFlash card with the OS

OS - 7450 ESS-1 R6.1 OS LICENSE 7450 ESS Operating Software for ESS-1 - Release 6.1, includes one (1) programmed CompactFlash card with the OS

OS - 7450 ESS-6/6v/7/12 R6.0 OS LICENSE 7450 ESS Operating Software for ESS-6/6v, ESS-7 or ESS-12 - Release 6.0, includes two (2) programmed CompactFlash cards with the OS

OS - 7450 ESS-6/6v/7/12 R6.1 OS LICENSE 7450 ESS Operating Software for ESS-6/6v, ESS-7 or ESS-12 - Release 6.1, includes two (2) programmed CompactFlash cards with the OS

OS - 7450 ESS-6/7/12 R5.0 OS LICENSE 7450 ESS Operating Software for ESS-6, ESS-7 or ESS-12 - Release 5.0, includes two (2) programmed CompactFlash cards with the OS

PEM - 7450 ESS-12 175A DC PEM-3 7450 ESS-12, 12-slot Shelf 175 AMP DC Power Entry Module-3 for the 7450 ESS-12 DC Shelf.

PEM - 7450 ESS-12 DC PEM 7450 ESS-12, 12-slot Shelf DC Power Entry Module (PEM) for the 7450 ESS-12 DC Shelf

PEM - 7450 ESS-12 PEM-3 + IMP PNL 7450 ESS-12 DC PEM-3 3HE03666AA (2) ,7450 ESS-12 3HE04150AA ACC - Impedance Panel Kits Qty 5 (x2), 3HE04608AA - 7450 ESS-12 SLOT PEM-3 UPGRADE (x1)

PEM - 7450 ESS-6 80A DC PEM-3 - SLOT 1 7450 ESS-6 80 AMP DC Power Entry Module-3 SLOT 1

PEM - 7450 ESS-6 80A DC PEM-3 - SLOT 2 7450 ESS-6 80 AMP DC Power Entry Module-3 SLOT 2

PEM - 7450 ESS-6 PEM-3 + IMP PNL 7450 ESS-6 80 AMP DC Slot 1 Power Entry Module-3 3HE04151AA (1), 7450 ESS-6 80 AMP DC Power Entry Module-3 Slot 2 3HE04152AA (1), 7450 ESS-6 Impedance Panel 3HE04149AA Kit (4), 7450 ESS-6 SLOT PEM-3 UPGRADE - 3HE04610AA (1).

PEM - 7450 ESS-6/7 DC PEM - SLOT 1 7450 ESS-6/7 DC PEM 1, DC Power Entry Module for Slot 1 on ESS-6 and ESS-7. Used with DC PEM 2 provides 1+1 redundant DC power

PEM - 7450 ESS-6/7 DC PEM - SLOT 2 7450 ESS-6/7 DC PEM 2, DC Power Entry Module for Slot 2 on ESS-6 and ESS-7. Used with DC PEM 1 provides 1+1 redundant DC power

PEM - 7450 ESS-6v 80A DC PEM-3 7450 ESS-6v 80 AMP DC PEM-3 , DC Power Entry Module-3 for Slot 1 and 2 on ESS-6v.

PEM - 7450 ESS-7 100A DC PEM-3 SLOT 1 7450 ESS-7 DC 100 AMP PEM-3, DC Power Entry Module for Slot 1 ESS-7. Used with DC PEM-3 1 provides 1+1 redundant DC power

PEM - 7450 ESS-7 100A DC PEM-3 SLOT 2 7450 ESS-7 DC 100 AMP PEM-3, DC Power Entry Module for Slot 2 ESS-7. Used with DC PEM-3 1 provides 1+1 redundant DC power

PEM - 7450 ESS-7 AC PEM - SLOT 1/2 7450 ESS-7 AC PEM, AC Power Entry Module for PEM Slot 1 or Slot 2. Requires paired 7450 ESS 7 slot AC Power Supply Unit (PSU). One (1) AC PEM/PSU pair required per chassis for AC power. Two (2) AC PEM/PSU pairs provide 1+1 redundant AC power

PEM - SR/ESS-1 RED AC POWER SUPPLY SR/ESS-1 Redundant AC Power Supply for SR/ESS-1 Redundant AC.