The Cisco C3945-CME-SRST/K9 is a modular integrated services router designed for enterprise branch offices requiring voice, data, and security capabilities. This unit supports up to 64 voice channels via PVDM3 (Packet Voice DSP Module), CME-SRST (Cisco Unified Communications Manager Express with Survivable Remote Site Telephony) licensing for 25 users, and includes UC licensing for unified communications deployment. The 3945 features three fixed Gigabit Ethernet ports and one internal WAN slot for additional connectivity options, supporting throughput suitable for medium-branch environments. It integrates routing, switching, security, and VoIP in a single 2U form factor, compatible with standard 19" racks. Typical deployments include multi-site enterprises, telework hubs, and branch offices consolidating voice and data infrastructure. The CME-SRST bundle enables local call processing with automatic failover to centralized Unified Communications Manager.
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