Voice security bundles for the Cisco 3900 and 2900 Series routers that come with the entry-level PVDM3, Unified Communications and Security technology license activated. By default, these bundles will ship with the universal IOS image that supports payload cryptography.- The Cisco High-Density Packet Voice Digital Signal Processor Module (PVDM3) enables Cisco 2900 and 3900 Series Integrated Services Routers Generation 2 (ISR G2) to provide rich-media capabilities such as high-density voice video connectivity, conferencing, transcoding, transrating, and secure voice in Cisco Unified Communications Solutions. Wichtig zu wissen: