l Provide network exchange channels for all the common signal processing boards in the chassis;
l 19 10/100 Mbps internal network interfaces;
l 2 1000 Mbps external network interfaces;
l 2 k timeslots for chassis stacking, supporting the large-capacity system;
l 2 SFP ports: EXTa and EXTb, with 1 SFP module inserted respectively; The SFP rate is 155.52 Mbps; the board can be connected to the PFBNS16K2 for large-capacity non-blocking exchange.