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C3845-35UC/K9
3845 w/ PVDM2-64,NME-CUE,35 CME/CUE/Ph lic,SP Serv,128F/512D
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C3845-35UC/K9 is a modular enterprise router built to deliver high-performance integrated services, combining robust routing capabilities with flexible modularity. Equipped with dual WAN interfaces and four LAN ports, it supports comprehensive connectivity options to meet demanding branch office and campus environments while offering advanced VPN features and secure communications through IPSec, SSL VPN, GRE, and DMVPN protocols.
C3845-35UC/K9 offers versatile power options with AC power and redundant configurations, ensuring continued operation and reliability. Its architecture is designed for integrated voice, video, and WAN optimization services, with expansion slots available for NIM and EHWIC modules to enhance throughput, performance, and overall redundancy. Use cases include enterprise-grade networking, unified communications, and mission-critical applications that demand scalable and secure data transport.
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Scenario: Deploy the C3845-35UC/K9-3845 in a 200-user branch office to unify IP routing and on-premises call processing with 35 CME/CUE extensions, PVDM2-64 DSPs and NME-CUE recording. Outcome: Reduces hardware footprint by 40%, delivers HD voice quality and cuts TCO by 30%.
Scenario: A service provider uses the C3845-35UC/K9-3845 with SP Serv license and PVDM2-64 to terminate TDM trunks and handle 64 simultaneous SIP transcoding sessions. Outcome: Enables carrier-grade SIP trunking with guaranteed QoS, lowers per-call costs by 25% and simplifies network operations.
Scenario: An enterprise interconnects 10 remote offices using the C3845-35UC/K9-3845’s SP Serv license for 128 IPsec tunnels while leveraging integrated CME/CUE for local voice services. Outcome: Achieves encrypted voice/data transport with 99.99% uptime, centralizes management and accelerates deployment by 40%.
To get the detailed certification, please go to the Compliance Center.
 C3845-35UC/K9 |  CISCO3825-SEC/K9 |  C3825-VSEC-CUBE/K9 |  CISCO3825 |  C3845-VSEC-SRST/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 | Firewall / Intrusion Prevention / VPN | Firewall / Intrusion Prevention / Malware Protection | Firewall | Firewall / Intrusion Prevention / Malware Protection |
| Compliance Standards | FCC, CE, UL | FCC / CE | FCC, CE | IEEE / FCC / CE | FCC / CE / RoHS |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | N/A | N/A | 16 inches | 14.2 inches | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | EN 55022 | N/A | N/A |
| Ethernet Technology | 10/100/1000 | 10/100 | 10/100/1000 | 10/100 | 10/100/1000 |
| Expansion Slots | NIM, EHWIC | EHWIC / NIM | NIM / EHWIC / SFP+ | EHWIC | EHWIC / NIM |
| Features | VPN, VoIP, IPv6 Compatible, Firewall, MPLS | VPN / Firewall / IPv6 Compatible / QoS | VPN / IPv6 Compatible / Firewall | VPN / Voice / IPv6 Compatible / Firewall / MPLS | Mesh / VPN / VoIP / IPv6 Compatible / Firewall |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | N/A | N/A | 4.5 inches | 1.75 inches | N/A |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice, Video, WAN Optimization | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization | Voice / Video / WAN Optimization |
| Interface Ports | RJ-45, SFP | RJ-45 | RJ-45 / SFP | RJ-45 | RJ-45 / SFP / Combo Ports |
| LAN Ports | 4 LAN Ports | Modular LAN | 4 LAN Ports | 4 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 256 MB | 512 MB | 512 MB | 512 MB |
| Modular Slots Available | 3+ Slots | 2 Slots | 2 Slots | 2 Slots | 3+ Slots |
| Network Protocols | TCP/IP, PPP, Frame Relay, ATM | IPv4 / IPv6 | IP, ICMP, TCP, UDP, RTP, SIP | IPv4 / IPv6 | IPv4 / IPv6 / MPLS |
| Power | 350W | 375W | 250 W | 350W | 350 Watt |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply with Redundant Options | AC Power Supply / Redundant |
| Product Name | Cisco 3845 Integrated Services Router | Cisco 3825 Security Integrated Services Router | Cisco C3825 VSEC CUBE/K9 | Cisco 3825 Integrated Services Router | Cisco C3845-VSEC-SRST/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 / HTTP/HTTPS | SSH, Telnet, SNMP | CLI / SNMP | SSH / Telnet / SNMP |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | EIGRP / OSPF / BGP / IS-IS / RIP / Static Routing |
| Safety | N/A | N/A | UL, CSA | N/A | N/A |
| Speed/Capacity | Gigabit | Fast Ethernet | Gigabit | Gigabit | Gigabit |
| Stacking Capability | No | No | Yes | No | Yes |
| Telecom | N/A | N/A | RoHS Compliant | N/A | N/A |
| Throughput Capacity | 35 Mbps | 75 Mbps | 50 Mbps | N/A | 75 Mbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec / SSL VPN / GRE / DMVPN / FlexVPN | IPSec / SSL VPN | IPSec / SSL VPN / DMVPN | IPSec / DMVPN / SSL VPN | IPSec / DMVPN / FlexVPN |
| WAN Configuration | Dual WAN | WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | Modular WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | N/A | N/A | 20 lbs | 20 lbs | N/A |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | 17 inches | 17.1 inches | N/A |
| Wireless Support | No | No | No | No | No |
Cisco 3845 with PVDM2-64 and NME-CUE provides high-capacity UC performance. Supports 35 CME/CUE licenses efficiently for large branch offices.
Durable and predictable. Handles multiple endpoints efficiently while maintaining secure and reliable communications.
Easy to deploy and manage. Provides stable voice, UC, and network services across branch offices.
Reliable Cisco solution. Ensures seamless UC and voice operations even under high workloads.
Efficient and robust. Perfect for branch offices requiring secure, high-performing UC and voice communications.
The Cisco C3845-35UC/K9 is a branch-office router with a built-in PVDM2-64 DSP module, NME-CUE voice module, 35 CME/CUE/Ph licenses, Service Provider feature set, 128 MB flash and 512 MB DRAM.
PVDM2-64 is a DSP module providing 64 voice call paths for transcoding, conferencing and digital signal processing, optimizing voice quality and reducing latency in unified communications deployments.
The Network Modules Enhanced Cisco Unified Express (NME-CUE) integrates IP telephony and voicemail services on the 3845 platform, supporting automated attendant, unified messaging and integration with Cisco Unified Communications Manager.
The C3845-35UC/K9 ships with 35 licenses that can be allocated across Cisco Unified Communications Manager Express (CME), Cisco Unity Express (CUE) or IP phone registration, enabling mixed voice deployments up to 35 endpoints.