Huawei OSN3500 is a STM-64 level MSTP, It have 15 service slots and can MAX support 12*STM-64 interface. OSN3500 Subrack comes with two PIU (Power Interface Unit), one AUX (System Auxiliary Interface Board), others system board and service board are configurable. Thunder-link.com also offers typical configuration bundle line, to meet your different requirement on various scenarios. In addition, Thunder-link.com provides self configuration page, where you can configure your own OSN3500 by selecting boards and items yourself. With our professional technical support to rich your experience.