For small- and medium-sized businesses (SMBs), a full series of MSR 20/30/50 routers can be used for comprehensive services networks, where MSR 50 series routers serve as the core in enterprises and MSR 20/30 series routers as the access devices in branches. A variety of services are available, including data, video, voice and fax. For large or ultra large enterprises, H3C NE series high-end and core routers are used as the core in enterprises and MSR 30/50 series routers as the access devices on the edge and aggregation layer in branches. The following illustrates a typical network application where MSR 50 series routers serve as the core.

Large- and medium-sized enterprise comprehensive network
H3C MSR 50 series routers are used in the headquarters and connected to branch networks through Ethernet, digital data network (DDN), frame relay, X.25 or synchronous digital hierarchy (SDH) to form a backbone. H3C MSR 20/30 series routers are used in branches and connected to remote users through Ethernet, PSTN/ISDN to provide access services for home office and mobile office users.