Features like Security (SEC), Unified Communications (UC), and Data are activated via software licenses rather than downloading separate images.
This image is compatible with the entire Cisco 2900 ISR series. Key Features and Security best download c2900universalk9mzspa1573m8bin full
The "Universal" image is a single Cisco IOS software file that contains all available technology sets for the ISR G2 platform. Features like Security (SEC)
Supports high-speed WAN environments with concurrent services enabled up to 75 Mbps. Unified Communications (UC)
This is a maintenance release in the 15.7M train, offering stability and security fixes for enterprise and service provider networks. System Requirements & Compatibility