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C3825-VSEC/K9
3825 Voice Security Bundle,PVDM2-64,Adv IP Serv, 128F/512D
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C3825-VSEC/K9 is a high-performance enterprise router that delivers robust integrated security and advanced networking capabilities in a modular architecture. It offers flexible power options with redundant AC power supply support, multiple WAN/LAN interfaces for enhanced connectivity, and integrated services that include voice, video, and WAN optimization—all designed to support secure VPN features and reliable throughput in demanding network scenarios.
Built for performance and versatility, the C3825-VSEC/K9 features modular expansion slots for network interface modules (NIMs), built-in firewall protection with IPSec/SSL VPN capabilities, and high availability support for mission-critical environments. Its design is ideal for enterprises and branch offices seeking secure, scalable, and resilient network solutions that meet modern connectivity and redundancy requirements.
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In a global manufacturing firm operating ten remote sites, IT deploys the Cisco C3825-VSEC/K9 with PVDM2-64 DSP modules and Advanced IP Services (128F/512D) to consolidate voice, data and security on a single platform. Built-in firewall, zone-based policies and voice encryption protect SIP and H.323 calls over MPLS. Outcome: Achieves end-to-end voice confidentiality, meets corporate security mandates, and sustains sub-80 ms latency for crystal-clear real-time communications.
A tier-1 bank integrates the C3825-VSEC/K9-3825 Voice Security Bundle with PVDM2-64 and Advanced IP Services to secure inbound/outbound customer payment data. The solution enforces intrusion prevention, secure RTP encryption and dynamic VLAN segmentation for over 500 concurrent calls. Outcome: Ensures full PCI-DSS compliance, eliminates voice-based fraud vectors, and guarantees high-performance call routing with QoS prioritization.
A healthcare network deploys the Cisco 3825 router (Voice Security Bundle, PVDM2-64, 128F/512D) as a secure VoIP gateway for telemedicine sites. Advanced IP Services provide AES-encrypted voice/video tunnels over VPN, multi-codec transcoding and adaptive jitter buffering. Outcome: Delivers HIPAA-compliant, high-quality telehealth sessions, simplifies branch deployment, and reduces packet loss by 50% for consistent patient care.
To get the detailed certification, please go to the Compliance Center.
| C3825-VSEC/K9 |  C3845-NOVPN |  CISCO3845-SEC/K9 |  CISCO3825-SRST/K9 |  C3845-VSEC/K9 | |
|---|---|---|---|---|---|
| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Modular | Modular | Modular |
| Broadband | N/A | N/A | N/A | N/A | N/A |
| Built-in Security Features | Firewall, Intrusion Prevention, Malware Protection | Firewall, Intrusion Prevention | Firewall, Intrusion Prevention, VPN Encryption | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC, CE, UL | FCC, CE | FCC, CE, RoHS | FCC / CE | IEEE 802.3, FCC, CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | N/A | 15 inches | N/A | N/A | 18.7 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | CISPR 22 | N/A | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | NIM | NIM | NIM / EHWIC | EHWIC | EHWIC / NIM |
| Features | VPN, Firewall, VoIP, IPv6 Compatible | Routing, Switching, Integrated Services, Firewall, QoS | VPN, VoIP, IPv6 Compatible, Firewall | VPN / VoIP / IPv6 Compatible / Firewall | VPN / Firewall / Voice / Video / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 512 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | N/A | 2 inches | N/A | N/A | 4.5 inches |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice, Video, WAN Optimization | Voice, Video | Voice, Video | Voice / Video | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45, SFP | RJ-45, SFP | RJ-45 | RJ-45 | RJ-45 / SFP |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 2 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 4 GB | 512 MB | 256 MB | 512 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 3+ Slots |
| Network Protocols | IPv4, IPv6, MPLS | IPv4, IPv6, MPLS | TCP/IP, UDP, ICMP, IGMP | IPv4 / IPv6 | IPv4 / IPv6 |
| Power | 130 Watts | 300W | 415W | 130 W | 350 Watt |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply; Redundant Power Supply Option |
| Product Name | Cisco 3825 Integrated Services Router VSEC | C3845-NOVPN Integrated Services Router | Cisco 3845 Integrated Services Router Security (CISCO3845-SEC/K9) | CISCO3825-SRST/K9 | Cisco 3845 Integrated Services Router - VSEC/K9 |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | HTTP, HTTPS, SSH, SNMP, Telnet | SSH, Telnet, SNMP | SSH, SNMP, Telnet | Telnet / SSH / SNMP | CLI / SNMP / Web-based GUI |
| Routing Protocols | OSPF / EIGRP / BGP / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | IEC/UL | N/A | N/A |
| Speed/Capacity | Gigabit | Gigabit | 75 Mbps | Fast Ethernet | Gigabit |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | TIA/EIA | N/A | N/A |
| Throughput Capacity | 100 Mbps | 1 Gbps | 75 Mbps | 0.035 Gbps | 100 Mbps |
| Use Case | Enterprise | Enterprise, Branch Office | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec / SSL VPN / DMVPN / FlexVPN / N/A | N/A | IPSec / SSL VPN | IPSec | IPSec / SSL VPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | Modular WAN |
| Weight | N/A | 25 lbs | N/A | N/A | 42.5 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | 17 inches | N/A | N/A | 17.3 inches |
| Wireless Support | No | No | No | No | No |
Cisco 3825 Voice Security Bundle provides secure and high-performance UC. PVDM2-64 ensures clear, reliable voice communications.
Durable and predictable. Supports multiple voice endpoints efficiently while maintaining secure network operations.
Easy to configure and maintain. Provides consistent voice and UC performance with minimal downtime.
Reliable Cisco solution. Ensures seamless voice and secure UC communications for medium branch offices.
High-performing and robust. Ideal for branch offices needing secure voice and unified communications deployments.
The Cisco 3825 Voice Security Bundle (SKU C3825-VSEC/K9) is a modular integrated services router preconfigured with PVDM2-64 DSP, Advanced IP Services license, 128 MB flash and 512 MB DRAM to deliver secure voice, data, and VPN services.
The bundle includes the Cisco 3825 router chassis, PVDM2-64 Digital Signal Processor module, Cisco IOS Advanced IP Services software license, 128 MB onboard flash memory, and 512 MB DRAM.
The PVDM2-64 module supports up to 64 voice channels or 62 transcoded VoIP calls with echo cancellation and enhanced voice quality.
The Cisco 3825 Voice Security Bundle offers integrated stateful firewall, IPsec VPN, SSL VPN, intrusion prevention, threat control, and secure signaling for voice and data protection.
With the Advanced IP Services license, the Cisco 3825 delivers up to 75 Mbps of aggregate routing and IPsec VPN throughput for branch office connectivity.
You can expand connectivity via four onboard 10/100/1000 Ethernet ports and additional Network Module, HWIC, or Enhanced WIC slots compatible with the Cisco 3825 chassis.
Yes, the 3825 with PVDM2-64 and Advanced IP Services supports Cisco Survivable Remote Site Telephony (SRST) to maintain call processing during WAN outages.
Yes, the Advanced IP Services license on the Cisco 3825 router is field upgradeable via Cisco license activation without requiring hardware changes.
The Cisco 3825 router requires 100–240 V AC input power with a typical power consumption of 80 W and supports an optional redundant power supply.
The Cisco 3825 Voice Security Bundle ships with Cisco IOS Release 12.4 or later images supporting Advanced IP Services and integrated security features.
The Cisco 3825 supports video conferencing and unified communications applications when paired with the PVDM2-64 module and appropriate Cisco Unified Communications licenses.
The Cisco 3825 with PVDM2-64 can handle up to 62 secure voice calls with encryption and echo cancellation under the Advanced IP Services license.
The PVDM2-64 module is compatible with all Cisco routers that have PVDM2 card slots and does not fit into original PVDM slots.
Cisco offers a one-year limited hardware warranty and optional Cisco SMARTnet support for hardware replacement, software updates, and technical assistance for the C3825-VSEC/K9 bundle.
The Cisco 3825 Voice Security Bundle is ideal for small to medium branch offices requiring secure voice, data, VPN services, and integrated survivability with high voice channel density.