SuperStack II NETBuilder 52x and 42x series routers bring SuperStack system functionality and fully digital ISDN dial services to remote LAN users. ISDN delivers the fast call setup needed by routing protocols, and easily surpasses analog modem speeds. SuperStack II NETBuilder 52x and 42x routers support two ISDN data channels and one control channel via the ISDN Basic Rate Interface. The data channels can be used independently to connect to different locations, or used as one logical connection to a remote site.

Adding to ISDN flexibility, SuperStack II NETBuilder 52x and 42x series routers offer Boundary Routing technology or full multiprotocol routing.

These upgradeable, compact, SuperStack Token Ring ISDN routers include the SuperStack II NETBuilder 527 router for multiprotocol routing and SuperStack II NETBuilder 523 router for SNA Boundary Routing technology. Every router includes software and documentation, an integrated UTP and STP Token Ring LAN connection (supporting either 4 or 16 Mbps), connectors (including an advanced redundant power system connector), and a rack mount kit to eliminate the need for extra cables and components. Support for Transcend® network management software provides an easy-to-use graphical interface with a common look and feel, and SNMP MIB II compliance supports many standard MIBs.

• SuperStack II NETBuilder 52x series routers support an ISDN Basic Rate Interface (BRI) and, for analog links, a Data Terminal Equipment (DTE) interface as well as a Data Communications Equipment (DCE) interface with special cable

• Router software supports industry-standard data compression and dial services to increase effective bandwidth, reduce dial-up line usage fees, handle peak traffic, and block superfluous remote traffic

• Upgradeability (SuperStack II NETBuilder 523 to 527 router functionality) protects your investment and simplifies growth

Routing Capabilities and Upgrade Ability:   SuperStack II NETBuilder 523 router SNA Boundary Routing platform, IP, IPX, AppleTalk, DECnet, and VINES and is upgradeable to SuperStack II NETBuilder 527 router for full routing of IP, IPX, DLSw, AppleTalk, DECnet, VINES, and OSI.

DTE Interface Support: V.35, RS-449, RS-232, X.21

DCE Interface Support: V.35, RS-232 (via cable)

Line Speed: 2.4 Kbps to T1/E1

WAN Protocol Support: Point-to-Point Protocol (PPP), Frame Relay, X.25, and SMDS

Flash Memory: Optional dual-image flash support with 4 MB flash upgrade (3C8104) and 4 MB DRAM upgrade (3C8040)

Requirements: Boundary routers require a NETBuilder router with BCN at the central site

Network Management: Embedded Web server for direct management; 3Com’s graphical Transcend network management solutions for Windows 95, Windows NT, and UNIX

3C8527C - Multiprotocol router
3CR8527C91 - Multiprotocol router with 56-bit encryption
3C8523C* - SNA boundary router
*Requires a NETBuilder router with Boundary Control Node (BCN) at the central site