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Name:
C3825-35UC-VSEC/K9
- Description:
- 3825 w/ PVDM2-64,NME-CUE,35 CME/CUE/Ph lic,Adv IP,128F/512D
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3-Year Extended Warranty
Extended protection, enterprise-grade.
All enterprise hardware is backed by a 3-year warranty — triple the industry standard — covering defects under normal use.
Professional repairs & replacements.
If a hardware issue is confirmed, we’ll repair or replace the unit. Replacement parts carry either original or 3-month coverage.
RMA process, simplified.
Once an RMA is approved, return the defective unit within 10 days. We handle the rest — no service gaps.
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In some regions, return-to-factory or remote service may apply. On-site service depends on infrastructure availability.
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Covered for any early faults.
All equipment includes a 30-day replacement warranty. If something goes wrong, we’ll repair or swap it — fast.
Replacements shipped in 10 days or less.
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C3825-35UC-VSEC/K9 Overview
Overview of C3825-35UC-VSEC/K9
C3825-35UC-VSEC/K9 is a modular enterprise router engineered with a robust architecture that combines integrated security services and unified communications with voice capabilities. It supports versatile power options via an AC power supply (with redundancy available in select configurations) and provides a mix of WAN and LAN interfaces designed for high-throughput, reliable connectivity in branch-office environments.
This router’s integrated services include advanced VPN capabilities (IPSec and SSL VPN), firewall and intrusion prevention, while its modular slots (two available NIM/EHWIC slots) allow for tailored interface upgrades. Designed for performance and redundancy, the C3825-35UC-VSEC/K9 is optimized for demanding enterprise use cases where secure voice, data, and video services must coexist on a single platform.
What is the price of C3825-35UC-VSEC/K9?
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Explore more options from Routers or explore other Cisco products.
C3825-35UC-VSEC/K9 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec / SSL VPN |
| Power Source | AC Power Supply / Redundant |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing |
| Broadband | N/A |
| Architecture | Modular |
| WAN Configuration | Dual WAN |
| WAN Ports | 2 WAN |
| LAN Ports | 4 LAN Ports |
| Ethernet Technology | 10/100/1000 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired |
| Network Protocols | IPv4 / IPv6 |
| Remote Management | SSH / Telnet / SNMP |
| Compliance Standards | FCC / CE |
| Wireless Support | No |
| Speed/Capacity | Gigabit |
| Firewall Features | Yes |
| Features | Mesh / VPN / Voice / IPv6 Compatible / Firewall |
| Use Case | Enterprise |
| Management | Managed |
| Form Factor | Rack-mount |
| Integrated Services | Voice / WAN Optimization |
| High Availability Support | Supported |
| Safety | N/A |
| EMC | N/A |
| Telecom | N/A |
| Throughput Capacity | 0.035 Gbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection |
| Expansion Slots | NIM |
| Modular Slots Available | 2 Slots |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 512 MB |
| Flash Memory | 128 MB |
| Interface Ports | RJ-45 / SFP |
| Power | 250W |
| Device Type | Router |
| Product Name | Cisco 3825 Integrated Services Router (C3825-35UC-VSEC/K9) |
| Height | 1.7 inches |
| Width | 19 inches |
| Depth | 18 inches |
| Weight | 25 lbs |
C3825-35UC-VSEC/K9 Use Case
Unified Branch Communications Hub with C3825-35UC-VSEC/K9 and PVDM2-64
In a multi-site enterprise seeking to consolidate data and voice, IT deploys the Cisco C3825-35UC-VSEC/K9 router with PVDM2-64 and NME-CUE to host 35 CME/CUE phone extensions and voicemail locally. Advanced IP services enable QoS, failover, and WAN optimization over MPLS. Outcome: Centralized management, 40% lower TCO, sub-50 ms latency for voice, and seamless dial plan integration across all offices.
Secure Remote Office IP VPN and SIP Trunking Using C3825-35UC-VSEC/K9
A retail chain equips remote stores with C3825-35UC-VSEC/K9 featuring Advanced IP sec, DMVPN, and SIP trunking via the NME-CUE module. The PVDM2-64 handles branch voice transcoding, while IPsec tunnels secure point-to-point data and voice traffic to headquarters. Outcome: 70% reduction in PRI/leased-line costs, encrypted voice/data convergence, and centralized call routing for consistent customer service.
On-Premises IVR and Contact Center Edge with C3825-35UC-VSEC/K9
A mid-sized contact center implements the Cisco C3825-35UC-VSEC/K9 with PVDM2-64 and 35 CME/CUE/Ph licenses to run local IVR scripts, call queuing, and voicemail offload. Advanced IP Services deliver efficient SIP connectivity to the cloud ACD, while 128 MB flash and 512 MB DRAM support high-availability configurations. Outcome: 3 × faster IVR response times, improved call-handling capacity, and 99.99% uptime for customer interactions.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| 5G Support | No | No | No | No | No |
| Architecture | Modular | Modular | Modular | Modular | Modular |
| Broadband | N/A | Ethernet | N/A | N/A | N/A |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC / CE | FCC / CE / RoHS | FCC / CE / RoHS | FCC / CE / RoHS | FCC / CE |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 18 inches | 17.3 inches | N/A | 16.7 inches | 16.3 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100/1000 | 10/100 | 10/100/1000 | 10/100 | 10/100/1000 |
| Expansion Slots | NIM | EHWIC / NIM | EHWIC / NIM | EHWIC | NIM / EHWIC |
| Features | Mesh / VPN / Voice / IPv6 Compatible / Firewall | VPN / VoIP / IPv6 Compatible / Firewall | Mesh / VPN / VoIP / IPv6 Compatible / Firewall | VPN / VoIP / IPv6 Compatible / Firewall | VPN / VoIP / IPv6 Compatible / Firewall / MPLS |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 128 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | 1.7 inches | 4.4 inches | N/A | 1.73 inches | 4.4 inches |
| High Availability Support | Supported | Supported | Supported | Not Supported | Supported |
| Integrated Services | Voice / WAN Optimization | Voice | Voice / Video / WAN Optimization | Voice / Video | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45 / SFP | RJ-45, SFP | RJ-45 / SFP / Combo Ports | RJ-45 | RJ-45 / SFP |
| LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 512 MB | 512 MB | 512 MB | 512 MB |
| Modular Slots Available | 2 Slots | 3+ Slots | 3+ Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4 / IPv6 | IPv4 / IPv6 | IPv4 / IPv6 / MPLS | IPv4, IPv6 | IP / TCP / UDP / ICMP / SNMP |
| Power | 250W | 350 W | 350 Watt | 221W | 350 W |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant Option | AC Power Supply / Redundant | AC Power Supply | AC Power Supply / Redundant |
| Product Name | Cisco 3825 Integrated Services Router (C3825-35UC-VSEC/K9) | Cisco 3845 Integrated Services Router with Virtual Security and CCME | Cisco C3845-VSEC-SRST/K9 | CISCO3825-AC-IP | Cisco 3845 Integrated Services Router (CISCO3845-V/K9) |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | SSH / Telnet / SNMP | Telnet / SSH / SNMP | SSH / Telnet / SNMP | SNMP, CLI, Telnet, SSH | Telnet / SSH / SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | EIGRP / OSPF / BGP / IS-IS / RIP / Static Routing | OSPF / BGP / EIGRP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | IEC 60950-1 | N/A |
| Speed/Capacity | Gigabit | Gigabit | Gigabit | N/A | Gigabit |
| Stacking Capability | No | No | Yes | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.035 Gbps | 0.4 Gbps | 75 Mbps | 0.075 | 60 Mbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec / SSL VPN | IPSec / SSL VPN | IPSec / DMVPN / FlexVPN | IPSec / DMVPN / N/A | 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 | 2 WAN Ports |
| Weight | 25 lbs | 28 lbs | N/A | 38 lbs | 31.3 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 19 inches | 17.3 inches | N/A | 17.3 inches | 17.3 inches |
| Wireless Support | No | No | No | No | No |
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Questions & Answers
Q
What is the Cisco 3825 router SKU C3825-35UC-VSEC/K9?
A
The Cisco 3825 router (SKU C3825-35UC-VSEC/K9) is a high-performance integrated services router with PVDM2-64 voice DSPs, NME-CUE module, 35 CME/CUE/Ph licenses, Advanced IP Services, 128 MB flash, and 512 MB DRAM.
Q
What are the key performance specifications of the Cisco 3825?
A
The Cisco 3825 delivers up to 75 Mbps of throughput, supports 64,000 concurrent sessions, and provides up to 16,000 voice ports with its PVDM2-64 module and NME-CUE voice processing.
Q
Which licensing packages are included with the C3825-35UC-VSEC/K9?
A
This SKU includes a Universal Cisco IOS Software license for Advanced IP Services and 35 concurrent Cisco CME/CUE/Phonelicense seats for integrated call processing.
Q
How much memory and storage does the Cisco 3825 offer?
A
The router comes standard with 512 MB of DRAM and 128 MB of onboard flash memory, upgradeable up to 1 GB DRAM and 256 MB flash for larger configurations.
Q
What voice and unified communications features are supported?
A
With PVDM2-64 DSPs and NME-CUE, the Cisco 3825 supports voice, conferencing, transcoding, and integrated Cisco Unified Communications Manager Express (CME) functionality for up to 35 users.
Q
What security features does the Cisco 3825 include?
A
The Cisco 3825 offers integrated firewall, VPN (IPsec), intrusion prevention, URL filtering, and advanced threat defense when paired with Cisco Secure Services.
Q
Which interface and connectivity options are available?
A
The router supports two integrated Fast Ethernet ports, three onboard hardware slots for WAN interface cards (e.g., T1/E1, serial, DSL), and optional Gigabit Ethernet modules.
Q
Can I expand the Cisco 3825 with additional modules?
A
Yes, the Cisco 3825 features three Network Module Enhanced (NME) slots, two HWIC slots, and one WIC slot for flexible interface and service expansion.
Q
Which routing protocols are supported on the Cisco 3825?
A
The Cisco 3825 supports OSPF, EIGRP, BGP, RIP, IS-IS, MPLS, and multicast routing as part of its Advanced IP Services feature set.
Q
What power supply and environmental requirements apply?
A
The Cisco 3825 operates on a 100–240 VAC, 50–60 Hz power supply, consumes up to 75 W, and functions in temperatures from 0°C to 40°C with standard rack-mount installation.
Q
How do I install and configure the Cisco 3825?
A
Installation involves rack-mounting the device, connecting power and network cables, and using Cisco IOS CLI or Cisco Configuration Professional for step-by-step setup.
Q
What are the typical use cases for the Cisco 3825?
A
The Cisco 3825 is ideal for branch office WAN aggregation, secure remote access, unified communications, and integrated voice/video/data services in medium to large enterprises.
Q
How can I upgrade the Cisco 3825 hardware or software?
A
You can upgrade by adding DRAM/flash, installing new NME or HWIC modules, and loading the latest Cisco IOS Software image via TFTP or USB flash.
Q
What warranty and technical support options are available?
A
Cisco offers a 90-day limited hardware warranty, optional SMARTnet maintenance for 24/7 global support, software updates, and advance hardware replacement.
Q
How does the Cisco 3825 ensure high availability?
A
The Cisco 3825 supports Stateful Switchover (SSO) with redundant power supplies and Cisco IOS high-availability features for nonstop operation.
Q
Where can I purchase the Cisco 3825 (C3825-35UC-VSEC/K9)?
A
You can purchase the Cisco 3825 through authorized Cisco partners, resellers, or the Cisco online store, with bundle options and volume discounts available.
