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ISR4351-VSEC/K9 All-in-One VoIP and Security SD-WAN Router
Product Overview The Cisco ISR4351-VSEC/K9 is a fully integrated voice and security services router, part of the Cisco ISR 4000 Series, designed for medium-sized enterprise branches. It includes both Voice (UC) and Security (SEC) licenses, providing advanced support for VoIP, unified communications, IPsec VPN, zone-based firewall, and application visibility. With modular flexibility, SD-WAN readiness, and scalable performance from 200 Mbps up to 400 Mbps, this router offers a cost-effective all-in-one solution for converged voice, data, and security deployments.
All-in-one platform with Voice and Security capabilities included
Supports SRST, CME, DSP modules, and TDM voice gateway features
Built-in IPsec VPN, Zone-Based Firewall, and application visibility tools
Performance-on-Demand licensing scales throughput as needed (200–400 Mbps)
Full support for SD-WAN, enabling intelligent path selection and cloud on-ramp
Modular slots accommodate LTE, FXO/FXS, T1/E1, UCS-E, and switching blades
Ideal for converged branch deployments needing VoIP, secure WAN, and data services
Similar Models Comparison
Model
Voice Support
Security License
Max Throughput
NIM Slots
SD-WAN
Ideal Use Case
ISR4451-VSEC/K9
Yes
Yes
2 Gbps
3
Yes
Large enterprise voice + security
ISR4351-VSEC/K9
Yes
Yes
400 Mbps
2
Yes
Medium secure UC branch
ISR4331-VSEC/K9
Yes
Yes
300 Mbps
2
Yes
Small branch voice + security
Latest ISR 4000 Voice & Security Series
Model
Max Throughput
Voice + Security
SD-WAN
Form Factor
Target Branch Type
ISR4451-VSEC/K9
2 Gbps
Yes
Yes
2RU
Large UC + secure branches
ISR4351-VSEC/K9
400 Mbps
Yes
Yes
1RU
Mid-size voice + security
ISR4331-VSEC/K9
300 Mbps
Yes
Yes
1RU
Compact secure UC branches
Sinanova specializes in supplying ICT networking equipment from leading brands such as Cisco, Huawei, and Juniper. Our product range includes switches, routers, firewalls, wireless access points and controllers, IP phones, video conferencing solutions, and more. We are committed to delivering original and reliable hardware along with professional ICT solutions—all at competitive prices. Our high-quality service ensures a smooth and hassle-free purchasing experience for our clients.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Distributor/Wholesaler,Exporter,Seller
Year Established:
2025
Total Annual:
50000-3000000
Employee Number:
50~100
Ecer Certification：
Verified Supplier
Sinanova began as a domestic distributor of Cisco products and an ICT integrator. Over time, the company expanded its portfolio to include Huawei data communication equipment as well as networking solutions from Juniper and Fortinet.
Today, Sinanova specializes in providing a wide range of networ... Sinanova began as a domestic distributor of Cisco products and an ICT integrator. Over time, the company expanded its portfolio to include Huawei data communication equipment as well as networking solutions from Juniper and Fortinet.
Today, Sinanova specializes in providing a wide range of networ...
