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ISR4431-V/K9 with SRST and CUBE for Converged Voice and Data Networks
Product Overview The Cisco ISR4431-V/K9 is a voice-enabled integrated services router from the Cisco 4000 Series, tailored for enterprise branches and service providers needing secure, converged voice and data solutions. It includes a UC (Unified Communications/Voice) license, supporting services like SRST (Survivable Remote Site Telephony), CUBE (Cisco Unified Border Element), TDM voice, and SIP trunking. With modular expansion and up to 1 Gbps performance, this platform is ideal for IP telephony, video collaboration, and application-aware routing.
Product Details
Specification
Description
Product Code
ISR4431-V/K9
Series
Cisco ISR 4000 Series
Form Factor
1RU rack-mountable
Base Performance
500 Mbps (upgradeable to 1 Gbps via license)
Built-in Interfaces
4 x 1G RJ45 (2 routed, 2 switched), USB, Console
Voice Capability
Yes – with UC license included
Voice Features Supported
CUBE, SRST, TDM voice gateway, SIP/H.323
NIM Slots
2 x Network Interface Module slots
SM Slots
1 x Service Module slot
DRAM
4 GB (expandable to 16 GB)
Flash Storage
8 GB (expandable)
Power Supply
Optional dual redundant AC/DC
Software
Cisco IOS XE
Security Features
ZBFW, IPsec VPN, CPPr (with SEC license)
SD-WAN Support
Yes (IOS XE SD-WAN image)
High Availability
NSF, ISSU, hot-swappable fans, redundant PSU
Product Features
Includes UC license for voice, video, and collaboration services
Supports CUBE, SRST, and TDM voice interfaces via voice modules
Modular expansion via 2 NIM and 1 SM slot for WAN, switch, LTE, or voice cards
Powered by Cisco IOS XE, enabling SD-WAN, QoS, and application visibility
Redundant power support and hardware resiliency for enterprise-grade uptime
Designed for secure, converged voice and data branch deployments
Delivers consistent user experience with support for unified communications features
Similar Models Comparison
Model
Voice License
Max Performance
Voice Gateway
SD-WAN Ready
Form Factor
ISR4431-V/K9
Yes
1 Gbps
Yes
Yes
1RU
ISR4451-X-AXV/K9
Yes
2 Gbps
Yes
Yes
2RU
ISR4351-V/K9
Yes
400 Mbps
Yes
Yes
2RU
ISR4331-V/K9
Yes
300 Mbps
Yes
Yes
1RU
Latest Voice-Enabled ISR Models Comparison
Model
Performance
Voice Support Features
Best Use Case
ISR4431-V/K9
500 Mbps–1 Gbps
SRST, CUBE, SIP, TDM
Mid-size branch with voice & UC
ISR4351-V/K9
200–400 Mbps
Voice, video, conferencing
Medium branches with mixed workloads
ISR4331-V/K9
100–300 Mbps
Voice and CUBE services
Small-to-medium IP telephony offices
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...
