The Cisco 2600 series shares modular interfaces with Cisco 1600 and 3600 series products, providing businesses and service providers with a range of modular, interchangeable solutions for use in small, medium-sized and regional branch offices. Components are field upgradeable, allowing network managers to easily change interfaces as new services are deployed - without performing a costly replacement of the entire remote branch office solution. These routers allow customers with Token Ring or mixed-LAN environments to protect current investments in network technology and benefit from the trend toward network consolidation. In industries such as banking, retail, and financial services, the Cisco 2600 series enables businesses to eliminate the need for multiple, parallel networks.The Cisco 2600 series extends the versatility, integration and power of the popular Cisco 3600 series to smaller, remote branch offices and complements the industry-leading Cisco 2500 series. The Cisco 2613 has a single Token Ring port. All Cisco 2600 series platforms support two WAN interface card slots, one network module slot, and one advanced integration module (AIM) slot.