1OverviewIntroductionThe MSR 20-1X routers are multifunctional access routers which are oriented to small and mediumbusiness (SMB), enterprise branches, and home offices, and are designed to serve high-qualityorderwire and commercial networks. High-quality orderwire and commercial networks need to satisfythe requirements for broadband access, wireless access, voice access, VPN, and QoS. In addition, thenetwork devices require high performance, stability, security, and manageability. MSR 20-1X routers arecost effective. They provide different integrated communication interfaces for different communicationlinks and also provide an SIC/DSIC slot for expansion.The MSR 20-1X routers include MSR 20-10, MSR 20-11, MSR 20-12, MSR 20-13, and MSR 20-15. All ofthem can be placed on a tabletop, or installed on a wall or in 19-inch standard cabinet. The followingsections will give you more details about these four models.Physical Description of the MSR 20-1X RoutersHardware SpecificationsTable 1 Hardware specifications of the MSR 20-1X routersItem MSR 20-10 MSR 20-11 MSR 20-12 MSR 20-13 MSR 20-15Console/AUX 1 1 1 1 1USB 1 1 1 1 1Layer 3 Ethernetinterface 1 1 1 1 1Layer 2 Ethernetinterface 4 4 4 4 4ADSL 0 0 0 0 1G.SHDSL.BIS 0 0 0 1 0SA 0 1 0 0 0ISDN BRI S/T 0 0 0 1 1 (Optional)E1/T1 0 0 1 0 0FixedInterfacesAM 0 0 0 0 1 (Optional)External SIC/DSIC slot 1 1 1 1 1WLAN fixedmodule 0 0 1 (Optional) 1 (Optional) 1 (Optional)InternalVPM slot 0 0 1 0 1Processor PowerPC333 MHzPowerPC333 MHzPowerPC333 MHzPowerPC333 MHzPowerPC333 MHz