Version 15.7(3)M8 provides a unified architecture that is stable and secure.
Features like Security (SEC), Unified Communications (UC), and Data are activated via software licenses rather than downloading separate images. best download c2900universalk9mzspa1573m8bin full
Ensure you have at least 30 MB of additional free space in the flash file system before attempting an upgrade. This is necessary for FPGA and BIOS updates included in recent 15.7 releases. Version 15
Offers hardware-based encryption and slots for Digital Signal Processors (DSP) for voice and video. Unified Communications (UC)