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The universal image simplifies deployment. Instead of installing different software images for different features (like voice or security), you install this single image. You then use Cisco Software Activation licenses to unlock specific feature sets like Unified Communications (UC) or Security (SEC). 2. Advanced Security (k9)

revision is a late-lifecycle rebuild, meaning it is highly stable and includes many bug fixes and security patches accumulated over the years. Feature Set ( universalk9 --FREE-- Download C2900-universalk9-mz.spa.157-3.m8.bin