ed on an Electrical Switch Fabric OXC for Core Transport Network Platform Mechanic ETSI 3001 119 rack 16 unit per sub-rack 3 sub-racks per rack Backplane Electrical bus using advanced PCI parallel protocol and hot standby protection Control Duplicated network element controller in hot mirroring configuration Duplicated sub-rack local controller Inter-rack 10 GbE protected interconnection Management and Configuration Option 1 Centralized OTN Network manager-compatible with SONET/SDH management Option 2 ASON protocol suite (integrated with proprietary development when needed) OXC Switch Fabric Expandable Strictly nonblocking Hot standby duplication Switch Fabric Options 80 Gbit/s 12 slots 1 sub-rack 1 rack working and protection 320 Gbit/s 32 slots 2 sub-racks 1 rack working, 1 rack protection 720 Gbit/s 62 slots 4 sub-racks 2 racks working, 2 racks protection 960 Gbit/s 62 slots 4 sub-racks 2 racks working, 2 racks protection Optional Embedded Carrier Class Ethernet Switch Expandable Hot standby duplication Switch Fabric Options 40 Gbit/s 6 slots 1 sub-rack both working and protection 80 Gbit/s 12 slots 1 sub-rack working 1 rack working, 1 rack 1 sub-rack protection protection Interfaces STM-1 16-ports Electrical 1:N Card protection supported STM-1, STM-4 SFP modules Gray optical 4, 8, or 16 ports STM-16 SFP modules Gray optical 16 ports STM-64 XFP modules Gray optical 4 ports STM 128 Embedded TXT Gray optical 1 port STM-64 Embedded TXT DWDM tunable (50 and 2 ports 100 GHz) STM-128 Embedded TXT DWDM tunable (200 GHz) 1 port SFP modules Gray optical 16 ports as large as 56 x 56 are available in the market having the low power consumption of 700 mW. Based on this kind of switches, an OXC with the block scheme reported in Figure 7.31 can be designed. Naturally, also a so-called transparent OXC could be considered, where the signal is not regenerated, but amplified at the input and output of the switch fabric. This choice would introduce a completely different network model that we will analyze, in detail, later in Ch