C1-CISCO1921/K9 Overview
The Cisco 1921 is an advanced model in the Cisco 1900 Series ISR lineup, enhancing the capabilities of its predecessor, the Cisco 1841. This router features embedded hardware encryption, optional firewall, and advanced security services, alongside extensive connectivity options including Serial, T1/E1, xDSL, Gigabit Ethernet, and 3G wireless capabilities.