The modular architecture of the Cisco2600 Series allows interfaces to be upgraded to accommodate network expansion or changes in technology as new services and applications are deployed. By sharing modular interfaces with the Cisco 1600, 1700, and 3600 Series, the Cisco 2600 provides unrivaled investment protection. The Cisco 2600 Series reduces the complexity of managing the remote network solution by integrating the functions of multiple separate devices into a single, compact unit.