Huawei Metro 1000 SCC unit, 16xE1 (75ohm & 120ohm) / 2xSTM-1 155M line unit integrated board SS49SCBH equipped with 2 S-1.1 15km SFP module Supports the SCC unit, XC unit, STG unit, EOW unit, STM-1/STM-4/STM-16 optical interfaces, and E1 electrical interfaces. Supports the higher order cross-connect capacity of 21.25 GB or the lower order cross-connect capacity of 5 GB. Supports the SEMF and MCF, Q and F interfaces for the management of SDH networks. Supports cross-connect line services with line services. Supports the SNCP and path protection. Supports the equipment to be configured as a TM or an ADM. Supports multiple network topologies. Suppors the synchronous clock signal for the functional units. Supports an external orderwire interface, and supports addressing calls and conference calls. Supports signal inloop and outloop. Supports the MSP and ALS function. SS49SCBH(S-1.1) is a System control for Huawei Metro 1000, provide the line, tributary, cross-connect, clock, SCC, and orderwire.Part number is 03052138.