Realize the effective integration of routing, switching, transmission, voice, security, local storage and wireless expansion, enhance the integration of wide and narrow bands, support all narrowband or broadband line modes, intelligently realize multi-wide area line load balancing, and ensure the coordination of various services. Support PPP, SLIP, SDLC, FR, LLC2, ISDN, X.25, HDLC, LABB, Ethernet _ II, Ethernet _ Snap, 802. 1q, TCP/IP, ICMP, UDP, FTP, ARP, DLSW, DDR, static routing, RIPV. The network management protocols supported by RIPv2, OSPF, BGP, NDSP, IRMP, SNSP, IGMP, DVMRP and PIM-SM/DM all have built-in dial-up modems or dial-up modems connected to the console port for remote login. By switching to the remote configuration mode with the button, users and manufacturers can dial through the telephone line anywhere to realize remote maintenance. To truly realize "0 field service", does VPN support IP Sec VPN, does Qos support FIFO, PQ, CQ, FQ, WFQ, CBWFQ, LLQ, RSVP, CAR, SPD and WRED, and does traffic shaping have a built-in firewall? Built-in network port, fixed WAN interface, 8 high-speed multi-functional WAN interface slots, fixed LAN interface, 24 100M LAN Ethernet ports, number of expansion module slots, 8 control ports, console and other parameters. The safety standard supports the standard L2TP and GRE power supply voltage (V) 100 ~ 240V. 50 ~ 60hz power supply (W)52W weight (kg)5.7kg appearance parameter length (mm)320 width (mm)444 height (mm)44.5 environmental parameter working temperature (℃) 0 ~ 40℃ working humidity 10 ~ 90%, non-condensation storage temperature (℃)-650.