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  EXT1–EXT7: 7 SFP ports with one SFP module inserted respectively; The SFP rate is 155.52 Mbps;

l  Large-Capacity exchange matrix, providing 8*2 k non-blocking exchange timeslots, with PFBNS192 built in; by the SFP ports, it can be connected to the 7 Keygoe multimedia switches with PFBNS192 installed respectively for a maximum of 16384-line non-blocking exchange.