Cisco C3945E-VSEC/K9 Gigabit Services Router C3900-SPE250/K9 PVDM3-64 3945E-SEC C3945EVSEC/K9

Description:

The Cisco C3945E-VSEC/K9 Integrated Services Router with Voice and Security bundle is used in enterprise networking systems to deliver secure WAN connectivity, integrated voice processing, and high-performance routing within Cisco ISR G2 3900 Series infrastructures. Commonly installed in large enterprise branch offices, unified communications deployments, corporate WAN edge networks, and multi-site business environments where advanced routing, VoIP services, and network security are required. Maintenance teams, network administrators, and system integrators use this router for branch infrastructure deployment, unified communications integration, network security upgrades, and replacement of legacy routing and voice gateway platforms.

Applications:

The Cisco 3945E-VSEC/K9 router is designed for enterprise and large branch network environments that require high-performance routing combined with integrated voice and security capabilities. It is frequently deployed in corporate headquarters branches, call centers, service provider edge environments, and large distributed enterprise networks where VoIP communication, VPN connectivity, and secure WAN routing are critical. With support for high-capacity DSP modules such as the PVDM3-64 and the C3900-SPE250 performance engine, the router enables advanced voice processing and scalable network performance for unified communications and high-traffic network infrastructures.

Technical Specifications:

• Manufacturer Part Number (MPN): C3945E-VSEC/K9
• Product Type: Integrated Services Router with Voice and Security Bundle
• Router Series: Cisco 3900 Series ISR G2
• Performance Engine: C3900-SPE250/K9
• Voice DSP Module: PVDM3-64
• WAN Interfaces: Modular WAN interface support
• LAN Interfaces: 4 × Gigabit Ethernet ports
• Expansion Slots: EHWIC slots and service module support
• Voice Support: Integrated VoIP gateway capabilities with DSP resources
• Security Features: Hardware-based VPN acceleration and integrated security services
• Form Factor: Rack-mount enterprise router
• Operating System: Cisco IOS software support

Common Replacements:

• Cisco C3945E/K9
• Cisco ISR4451-X/K9
• Cisco C3925E-VSEC/K9