Name: ISR4431-V/K9 Cisco 4431 Router Voice UC Bundle 4xGE/SFP 3xNIM
Brand: Cisco
SKU: ISR4431-V/K9
Price: 1.00 USD
Availability: InStock
Rating: 4.8 (125 reviews)

Product Overview
The Cisco 4431 Integrated Services Router in the ISR4431-V/K9 bundle delivers integrated routing with voice and unified communications capabilities. It includes four Gigabit Ethernet/SFP ports, three NIM slots for expansion, a PVDM4-64 voice processing module, a unified communications license, and CUBE-25 software for session border control.

General Information
Brand	Cisco

Technical Information
WAN Ports	4
LAN Ports	4
POE Support	No
Connector Type	RJ-45,SFP
RAM	4 GB
Flash / Storage	8 GB
SFP / SFP+ Ports	4
Built-in Modem	None
Management Interface	Web GUI, CLI (SSH/Telnet), REST API, SNMP, Netconf/YANG

Routing & Protocols
Multi-WAN / Load Balancing	Yes
NAT Support	Yes
Routing Protocols	Static, RIP, RIPng, OSPF, OSPFv3, EIGRP, BGP, IS-IS, VRRP, HSRP, PIM-SM, PIM-DM, IGMP, MLD, Policy-Based Routing (PBR), Route Maps

Networking Features
VPN Support	IPSec, L2TP, DMVPN, FlexVPN, GRE
QoS Support	Basic QoS, DSCP, MQC, Traffic Shaping, Traffic Policing
Firewall	Zone-Based
VLAN Support	Yes
Management Interfaces	Web GUI,CLI (SSH/Telnet),REST API,SNMP,Netconf/YANG

Physical Characteristics
Enclosure Type	Rack-Mountable 1U
Condition	Refurbished
Weight	3.00

Product Description
The Cisco 4431 Integrated Services Router (ISR) in the ISR4431-V/K9 configuration is designed to deliver comprehensive voice and unified communications (UC) services in enterprise networks. It integrates multiple network functions including routing, voice processing, and session border control, allowing organizations to consolidate infrastructure and simplify management. This router is generally deployed in medium to large branch offices or enterprise campus environments where voice, video, and data traffic need to be securely managed and routed. It is suited for IT and network administrators responsible for maintaining voice and data communications across distributed sites. Key Features Four Gigabit Ethernet/SFP combo ports to support flexible network connectivity Three Network Interface Module (NIM) slots for additional interface expansion PVDM4-64 module included, enabling digital signal processing for voice functions Unified Communications License to enable voice and video services integration CUBE-25 provides session border controller capabilities for SIP trunking and security This router plays a crucial role in delivering integrated services by combining routing with voice and unified communications functionalities. It helps reduce equipment footprint while enabling advanced telephony features and controlling signaling between enterprise and service provider networks.

Use Cases
This router is typically used in enterprise branch offices and campus networks that require integrated voice, video, and data connectivity. It suits environments where IT teams need to centrally manage routing and unified communication services within a single device. How It's Used: Deploying voice over IP (VoIP) services with integrated digital signal processing Connecting multiple network segments with flexible Gigabit Ethernet and SFP options Expanding interface capabilities using Network Interface Modules for specialized connectivity Implementing session border control for secure SIP trunking and voice sessions Providing unified communications services including voice and video for enterprise users Overall, the ISR4431-V/K9 supports converged network functionality by integrating routing, voice processing, and session border control. It enables enterprises to optimize network resources while supporting communication needs across distributed locations.

FAQ's
What ports are included on the ISR4431-V/K9? The router includes 4 Gigabit Ethernet/SFP combo ports for flexible network connections and 3 Network Interface Module slots for additional interface options. What does the PVDM4-64 module provide? The PVDM4-64 is a digital signal processor module that enables voice processing capabilities such as media resource handling and call compression. What is the UC License included with this router? The Unified Communications License activates voice and video services integration features on the router, supporting unified communications deployments. What functionality does CUBE-25 add? CUBE-25 is Cisco's session border controller software included in this bundle that manages SIP trunking and provides security and interoperability for voice sessions. Can the ISR4431-V/K9 be expanded for more interfaces? Yes, it has 3 Network Interface Module slots allowing the addition of various modules to support further network connectivity needs. Who typically uses the Cisco 4431 ISR? Network and IT administrators in medium to large enterprises deploy this router to integrate routing, voice, and unified communications across branch or campus networks.