Integrated Access Server Checklist Don't settle for less! Before you invest in any access server, make sure it offers these key features:   PortMaster 3 Ascend 448 USR Total Control $15,500 in ISP cooperative advertising Yes No No K56flexTM-capable, with guaranteed free upgrade to ITU-T-56k standard Yes Yes No Hot-swappable modem cards Yes No No Self-configuring modems Yes Yes No Real-time modem diagnotics Yes No No Faul-tolerant modem pooling Yes No No Scales as a virtual chassis Yes Yes No Switches between all analog and ISDN modem calls (even D-O-V over CT1) on a single phone number Yes No No Data compression hardware Yes Yes No Firewall packet filtering included Yes No Yes Optimized edge routing with OSPF and NSSA Yes No No RADIUS 2.0 support Yes No No