The Cisco2524 and Cisco2525 routers provide LAN and WAN access in a low-cost modular router platform that can grow with your internetworking needs. The Cisco2524 offers an Ethernet (attachment unit interface [AUI] or 10BaseT) LAN connection, and the Cisco2525 offers a Token Ring (shielded twisted-pair [STP] or unshielded twisted-pair [UTP]) LAN connection. Both routers can accommodate up to three WAN modules--two synchronous serial and one Integrated Services Digital Network (ISDN).