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CISCO3845-SRST/K9
3845 Voice Bundle w/ PVDM2-64,FL-SRST-250,SP Serv,128F/512D
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CISCO3845-SRST/K9 is a high-performance enterprise router built on a modular architecture that supports a range of integrated services including voice, video, and WAN optimization. Designed for demanding branch and campus environments, it features flexible power options with redundant AC power supplies, ensuring continuous operation even under critical conditions.
CISCO3845-SRST/K9 delivers robust WAN/LAN connectivity with dual WAN configurations and four LAN ports utilizing 10/100/1000 Ethernet technology. Its integrated VPN capabilities (IPSec and SSL VPN), advanced routing protocols, modular expansion slots, and built-in firewall and intrusion prevention features make it ideal for secure, high-throughput deployments in enterprise and mission-critical use cases.
CISCO3845-SRST/K9 price is is available on request. Get immediate quote.
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In a multi-site retail chain, the IT team deploys CISCO3845-SRST/K9-3845 Voice Bundle w/ PVDM2-64, FL-SRST-250, SP Serv, 128F/512D at each remote store. When the MPLS link to headquarters fails, SRST automatically switches IP phones to on-router call processing, preserving inbound/outbound voice traffic and ensuring uninterrupted customer service. Outcome: 250+ concurrent calls stay live with crystal-clear DSP-enhanced quality, reducing downtime, lost sales, and support tickets by 95%.
A regional contact center uses CISCO3845-SRST/K9-3845 Voice Bundle w/ PVDM2-64, FL-SRST-250, SP Serv, 128F/512D to maintain 24/7 operations. In the event of primary CUCM failure, the on-board SRST license and PVDM2-64 DSP modules automatically take over call routing, hold music and hunt-group logic. Outcome: Seamless failover supports up to 250 agents with full IVR and codecs, preventing revenue loss and preserving customer satisfaction and SLA compliance.
During a phased migration from legacy PBX to Cisco Unified Communications Manager, the enterprise IT team installs CISCO3845-SRST/K9-3845 Voice Bundle w/ PVDM2-64, FL-SRST-250, SP Serv, 128F/512D at each transition site. Phones register locally over SRST, enabling centralized administration while new CUCM servers come online. Outcome: Consistent call feature set, media transcoding and failover for up to 250 endpoints, accelerating cutover schedules and minimizing user disruption.
To get the detailed certification, please go to the Compliance Center.
| CISCO3845-SRST/K9 |  C3845-H-VSEC/K9 |  CISCO3825-WAE/K9 |  CISCO3825-HSEC/K9 |  C3825-VSEC-CCME/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 / Malware Protection | Firewall / Intrusion Prevention | Firewall, Intrusion Prevention, VPN Encryption | Firewall, Intrusion Prevention, Malware Protection |
| Compliance Standards | IEEE 802.3, IEEE 802.1Q | FCC / CE / UL | FCC / CE | FCC, CE | FCC, CE |
| Connectivity Type | Wired | Wired | Wired / Wireless | Wired | Wired |
| Depth | N/A | 18.4 in | N/A | N/A | N/A |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | FCC Class B | N/A | FCC Compliant | N/A |
| Ethernet Technology | 10/100/1000 | 10/100/1000 | 10/100 | 10/100 | 10/100/1000 |
| Expansion Slots | EHWIC, NIM | EHWIC / NIM | EHWIC | EHWIC | EHWIC |
| Features | VPN, IPv6 Compatible, Firewall, MPLS | VPN / Firewall / Intrusion Prevention / IPv6 Compatible | VPN / Voice / Video / IPv6 Compatible / Firewall | VPN, Firewall, IPv6 Compatible, QoS, NAT | VPN, Firewall, Intrusion Prevention, IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 128 MB | 128 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | N/A | 4.5 in | N/A | N/A | N/A |
| High Availability Support | Supported | Supported | Not Supported | Supported | Supported |
| Integrated Services | Voice, Video, WAN Optimization | Voice / Video | Voice / Video / Data | Voice, Video, WAN Optimization | Voice, Video, WAN Optimization |
| Interface Ports | RJ-45, SFP | RJ-45 / SFP / Combo Ports | RJ-45 / Serial | RJ-45, SFP | RJ-45, SFP |
| LAN Ports | 4 LAN Ports | Modular LAN | 4 LAN Ports | 2 LAN Ports | 4 LAN Ports |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 512 MB | 256 MB | 256 MB | 512 MB |
| Modular Slots Available | 3+ Slots | 2 Slots | 2 Slots | 2 Slots | 3+ Slots |
| Network Protocols | IPv4, IPv6 | IPv4 / IPv6 | TCP/IP / IPsec / HTTP / SNMP | IPv4, IPv6, TCP/IP, UDP, ICMP | IPv4, IPv6, MPLS |
| Power | 350 Watts | 350 W | 155 W | 130 W | 150W |
| Power Source | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply | AC Power Supply / Redundant | AC Power Supply / Redundant |
| Product Name | CISCO3845-SRST/K9 | Cisco 3845 Integrated Services Router with High Security (C3845-H-VSEC/K9) | CISCO3825-WAE/K9 | CISCO3825-HSEC/K9 Integrated Services Router | Cisco 3825 Integrated Services Router VSEC CCME/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 / HTTPS | CLI / SNMP | Console, Telnet, SSH | SNMP, SSH, Telnet, HTTP, HTTPS |
| Routing Protocols | OSPF / BGP / EIGRP / MPLS / IS-IS / RIP / Static Routing | OSPF / BGP / EIGRP / IS-IS / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing | OSPF / EIGRP / BGP / RIP / Static Routing | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | IEC 60950 | N/A | UL Listed | N/A |
| Speed/Capacity | Gigabit | Gigabit | N/A | Fast Ethernet | Gigabit |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 1.2 Gbps | 150 Mbps | 30 Mbps | 75 Mbps | 50 Mbps |
| Use Case | Enterprise | Enterprise | Enterprise | Enterprise / Business | Enterprise |
| VPN Support | IPSec / SSL VPN | IPSec / SSL VPN | IPSec | IPSec / SSL VPN | IPSec / SSL VPN |
| WAN Configuration | Dual WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | Modular WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | N/A | 32 lbs | N/A | N/A | N/A |
| Wi-Fi Standard | N/A | N/A | 802.11 a/b/g | N/A | N/A |
| Width | N/A | 17.2 in | N/A | N/A | N/A |
| Wireless Support | No | No | Yes | No | No |
Cisco 3845 SRST Voice Bundle provides high-capacity voice continuity. PVDM2-64 ensures seamless UC performance during network outages.
Durable and reliable. Handles multiple endpoints efficiently with SRST support and predictable performance.
Easy to deploy and manage. Ensures secure, stable voice and UC operations with minimal downtime.
Reliable Cisco solution. Supports large branch offices with seamless SRST voice and UC performance.
Strong and efficient. Perfect for offices requiring secure voice, UC, and continuity with SRST.
The Cisco 3845 Voice Bundle (CISCO3845-SRST/K9) is a fully licensed integrated Services Router featuring a PVDM2-64 DSP module, FL-SRST-250 survivable telephony license, SP Services contract, 128 MB flash, and 512 MB DRAM.
The bundle includes a Cisco 3845 ISR chassis, PVDM2-64 voice DSP module, FL-SRST-250 feature license, SP Services support agreement, 128 MB flash memory, and 512 MB DRAM.
PVDM2-64 is a digital signal processor (DSP) module that offloads voice transcoding, conferencing, and media processing tasks, enabling up to 64 simultaneous G.711 voice channels with low latency.
FL-SRST-250 is a feature license that enables Survivable Remote Site Telephony on the Cisco 3845, allowing up to 250 IP phones to register locally and maintain call control during WAN outages.
SP Services is Cisco’s lifecycle support package providing 24x7 technical assistance, hardware replacement, software updates, and access to Cisco’s knowledge base for uninterrupted operations.
128F/512D indicates the router ships with 128 MB of onboard flash memory for Cisco IOS images and 512 MB of DRAM for runtime operations and applications.
The Cisco 3845 offers modular DSP support, high-performance packet forwarding, integrated voice and data services, robust security, and advanced QoS for enterprise voice networks.
It provides end-to-end QoS via traffic classification, marking, hierarchical queuing, low-latency queuing, traffic shaping, and policing to guarantee voice quality.
Yes. The integrated architecture and DSP module allow the Cisco 3845 to process high-quality voice calls alongside data routing and security services without performance degradation.
The bundle uses perpetual licensing, bundling the PVDM2-64 and FL-SRST-250 feature license with no additional software fees or time-based renewals.
FL-SRST-250 supports up to 250 registered IP phone endpoints for call processing on the local router when the WAN connection is unavailable.
Yes. The Cisco 3845 integrates seamlessly with Cisco Unified Communications Manager for centralized call control, feature parity, and simplified provisioning.
Cisco offers SMARTnet and SP Services support packages, providing 24x7 hardware replacement, software updates, and direct access to Cisco’s technical assistance center.
To upgrade, power down the router, install a higher-capacity PVDM2 module in the DSP slot following Cisco’s hardware installation guide, then power up and verify module status.
The PVDM2-64 module supports up to 64 simultaneous G.711 voice calls or a mix of codec channels based on Cisco’s DSP resource allocation guidelines.
Enable the FL-SRST-250 license in global configuration, define dial-peers for PSTN fallback, configure IP source-address binding for phones, and verify SRST status with show commands.
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