As part of Cisco's comprehensive end-to-end networking solution, the Cisco 2600 series allows businesses to extend a cost-effective, seamless network infrastructure to the remote branch office and now offers Fast Ethernet and VLAN capabilities in Cisco 2620 models. The Cisco 2620 features one autosensing 10/100Mbps Ethernet port. This model also has two WAN Interface Card (WIC) slots, one network module slot, and an internal Advanced Integration Module (AIM) slot. The Cisco 2620 offers WAN-service flexibility and investment protection by supporting the same WAN interface cards available for the Cisco 1600 series, 2600 series, 3600 series and Cisco 1720 VPN access router, supporting a variety of serial, Integrated Services Digital Network Basic Rate Interface (ISDN BRI), and integrated channel service unit/data service unit (CSU/DSU) options for primary and backup WAN connectivity.Network Modules available for the Cisco 2600 series support a broad range of applications, including multiservice data/voice integration, analog and ISDN dial access, and serial device concentration. Powered by a high-performance RISC processor, the Cisco 2620 offers the performance required to support high-speed software-based data encryption, data compression, and inter-VLAN routing. The Fast Ethernet interfaces on the Cisco 2620 supports the Cisco Inter-Switch Link (ISL) protocol for interconnecting multiple VLAN switches. Since VLAN membership is defined in software, users can be added to the network or moved to a new location more cost effectively, regardless of their physical location.