Name:
CISCO2811-SRST/K9
- Description:
- 2811 Voice Bundle w/ PVDM2-16,FL-SRST-35,SP Serv,128F/512D
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$3,695.00
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CISCO2811-SRST/K9
2811 Voice Bundle w/ PVDM2-16,FL-SRST-35,SP Serv,1...
$1,676.00
28 in Global Warehouse
$1,676.00
55% off
TRUSTED, TRIED, PROVEN
CISCO2811-SRST/K9 Overview
CISCO2811-SRST/K9 is a modular, integrated services router designed for secure enterprise branch connectivity with a robust architecture that supports a mix of WAN/LAN interfaces and power options. It incorporates flexible modular capabilities with integrated voice, video, and data services while offering redundant power support and advanced routing protocols to ensure reliable performance in diverse network environments.
CISCO2811-SRST/K9 delivers built-in VPN features for secure remote access, high throughput with optimized performance, and redundancy mechanisms essential for mission-critical applications. Its design makes it ideal for branch offices and small to medium enterprises requiring combined services, enhanced security, and modular scalability to address evolving connectivity requirements.
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CISCO2811-SRST/K9 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec |
| Power Source | AC Power Supply / Redundant |
| Routing Protocols | OSPF / BGP / EIGRP / RIP / Static Routing |
| Broadband | N/A |
| Architecture | Modular |
| WAN Configuration | Dual WAN |
| WAN Ports | 2 WAN |
| LAN Ports | 2 LAN Ports |
| Ethernet Technology | 10/100 |
| Wi-Fi Standard | N/A |
| Connectivity Type | Wired |
| Network Protocols | IPv4 / IPv6 |
| Remote Management | SSH / Telnet / SNMP |
| Compliance Standards | FCC / CE |
| Wireless Support | No |
| Speed/Capacity | N/A |
| Firewall Features | Yes |
| Features | VPN / IPv6 Compatible / Firewall |
| Use Case | Enterprise / Small Business |
| Management | Managed |
| Form Factor | Rack-mount |
| Integrated Services | Voice / Video / WAN Optimization |
| High Availability Support | Supported |
| Safety | N/A |
| EMC | N/A |
| Telecom | N/A |
| Throughput Capacity | 0.025 Gbps |
| QoS Features | Supported |
| Built-in Security Features | Firewall / Intrusion Prevention / Malware Protection |
| Expansion Slots | NIM |
| Modular Slots Available | 2 Slots |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 256 MB |
| Flash Memory | 128 MB |
| Interface Ports | RJ-45 |
| Power | 80W |
| Device Type | Router |
| Product Name | CISCO2811-SRST/K9 |
| Height | 1.72 inches |
| Width | 17.24 inches |
| Depth | 14.96 inches |
| Weight | 21.52 lbs |
CISCO2811-SRST/K9 Use Case
Branch Office Telephony Resiliency with SRST
In a financial branch office with intermittent WAN reliability, deploying the Cisco 2811-SRST/K9 Voice Bundle with PVDM2-16 and FL-SRST-35 ensures uninterrupted local call processing when the central IP PBX is unreachable. Service Provider (SP) features deliver carrier-grade QoS and security, while the router’s 128 MB flash and 512 MB DRAM support near-instant failover. The outcome is seamless business continuity, zero dropped calls and maximized customer satisfaction during network outages.
High-Density Voice Gateway for Multi-Site Connectivity
A retail network with 30+ remote outlets requires simultaneous voice, video and conferencing services over a single platform. The Cisco 2811-SRST/K9 Voice Bundle with PVDM2-16 DSP modules provides up to 16 hardware-based transcoding channels and conferencing ports, while FL-SRST-35 adds PSTN fallback for up to 35 calls if the core SIP PBX goes offline. Built-in SP Serv and ample 128 MB flash/512 MB DRAM enable scalable, cost-effective voice aggregation and simplified infrastructure management.
Secure SIP Trunk Integration with Enhanced QoS and Compliance
An IT services firm must integrate SIP trunks securely to meet data-protection mandates and preserve call quality. The Cisco 2811-SRST/K9 Voice Bundle—equipped with PVDM2-16, FL-SRST-35 and SP Serv—offers service provider-grade encryption, advanced QoS policies and up to 35 local‐failover calls during core PBX maintenance. The robust 128 MB flash/512 MB DRAM hardware ensures low‐latency packet processing. The result is reduced telephony costs, guaranteed voice SLAs and full regulatory compliance.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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|---|---|---|---|---|---|
| 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 | Firewall / Intrusion Prevention / Malware Protection | Firewall / Intrusion Prevention | Firewall / Intrusion Prevention |
| Compliance Standards | RoHS / FCC | FCC / CE | FCC / CE | FCC / CE | IEEE 802.3, IEEE 802.2 |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | N/A | N/A | 14.96 inches | 12 inches | 14.6 inches |
| Device Type | Router | Router | Router | Router | Router |
| EMC | N/A | N/A | N/A | N/A | N/A |
| Ethernet Technology | 10/100 | 10/100 | 10/100 | 10/100 | 10/100 |
| Expansion Slots | NIM | EHWIC / NIM | NIM | NIM / EHWIC | EHWIC |
| Features | VPN / IPv6 Compatible / Firewall | VPN / Firewall / Integrated Security / IPv6 Compatible | VPN / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall / MPLS | VPN / Firewall / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 128 MB | 128 MB | 128 MB | 256 MB |
| Form Factor | Rack-mount | Rack-mount | Rack-mount | Rack-mount | Rack-mount |
| Height | N/A | N/A | 1.72 inches | 1.75 inches | 1.75 inches |
| High Availability Support | Supported | Supported | Supported | Supported | Supported |
| Integrated Services | Voice / Video | Voice / Video / Data | Voice / Video / WAN Optimization | Voice / WAN Optimization | Voice |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 / Console | RJ-45 |
| LAN Ports | 4 LAN Ports | 2 LAN Ports | 2 LAN Ports | Modular LAN | Modular LAN |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 512 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IPv4 / IPv6 | IPv4 / IPv6 | IPv4 / IPv6 | IPv4 / IPv6 | TCP/IP, IPX, AppleTalk |
| Power | 100 W | 75 Watt | 80W | 125 Watts | 160 Watts |
| Power Source | AC Power Supply | AC Power Supply / Redundant | AC Power Supply / Redundant | AC Power Supply | AC Power Supply |
| Product Name | Cisco C2821-H-VSEC/K9 | Cisco C2811-VSEC-CUBE/K9 Integrated Services Router | CISCO2811-SRST/K9 | Cisco 2811 Integrated Services Router | Cisco 2811-VSEC-SRST/K9 |
| Product Type | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router | Enterprise Router |
| QoS Features | Supported | Supported | Supported | Supported | Supported |
| Remote Management | HTTP / CLI / SNMP | Telnet / SSH / SNMP | SSH / Telnet / SNMP | Telnet / SSH / SNMP | Telnet, SSH, 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 | OSPF / BGP / EIGRP / RIP / Static Routing |
| Safety | N/A | N/A | N/A | N/A | N/A |
| Speed/Capacity | Gigabit | Fast Ethernet | N/A | N/A | N/A |
| Stacking Capability | No | No | No | No | No |
| Telecom | N/A | N/A | N/A | N/A | N/A |
| Throughput Capacity | 0.075 Gbps | 30 Mbps | 0.025 Gbps | 0.035 Gbps | 0.05 Gbps |
| Use Case | Enterprise | Enterprise / Branch Office | Enterprise / Small Business | Enterprise / Small Business | Enterprise |
| VPN Support | IPSec / SSL VPN / DMVPN | IPSec / GRE / DMVPN / N/A | IPSec | IPSec | IPSec / DMVPN |
| WAN Configuration | WAN | Dual WAN | Dual WAN | Dual WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | Modular WAN | 2 WAN |
| Weight | N/A | N/A | 21.52 lbs | 14 lbs | 15 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | N/A | N/A | 17.24 inches | 17 inches | 17.3 inches |
| Wireless Support | No | No | No | No | No |
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Questions & Answers
Q
What is the Cisco 2811 Voice Bundle (CISCO2811-SRST/K9)?
A
The Cisco 2811 Voice Bundle is an integrated router package featuring a PVDM2-16 DSP module, FL-SRST-35 fail-over licensing, Service Provider lifetime support, and 128 Mbps Fast Ethernet/512 kbps data performance.
Q
Which hardware components are included in the bundle?
A
The bundle includes a Cisco 2811 ISR, PVDM2-16 digital signal processor, FL-SRST-35 fail-over license, Service Provider SMARTnet lifetime support, and a 128 F/512 D performance license.
Q
How many concurrent voice calls does PVDM2-16 support?
A
The PVDM2-16 module supports up to 16 G.711 calls or a mix of G.729G calls, allowing for enterprise-grade voice gateway performance.
Q
What is FL-SRST-35 fail-over licensing?
A
FL-SRST-35 provides Survivable Remote Site Telephony fail-over for up to 35 IP phones, ensuring continuous voice services during WAN outages.
Q
What software platforms are compatible with this bundle?
A
This bundle runs Cisco IOS Software XR or IOS 15.x, supporting advanced voice features including MGCP, H.323, SIP, CUBE, and Cisco Unified Survivable Remote Site Telephony.
Q
What are the primary use cases for the 2811 Voice Bundle?
A
Ideal for small to medium branch offices requiring secure WAN routing, integrated voice gateway, local PSTN backup, and survivable IP telephony.
Q
How does SRST enhance voice reliability?
A
SRST (Survivable Remote Site Telephony) automatically provides call processing for IP phones when the WAN link to the central call manager fails.
Q
What security features does the Cisco 2811 offer?
A
It includes integrated firewall, VPN (IPsec, SSL), intrusion prevention, URL filtering, and control-plane protections to safeguard voice and data traffic.
Q
What are the router’s interface options?
A
Interfaces include two integrated 10/100 Fast Ethernet ports, four onboard voice DSP slots, one NIM slot for additional WAN interfaces, and USB storage.
Q
What is the typical power consumption of the Cisco 2811 Voice Bundle?
A
Maximum power draw is approximately 60 W under full load; average operational consumption is around 35 W.
Q
Can I upgrade the DSP capacity in the future?
A
Yes, you can upgrade by adding higher-density PVDM2 modules (PVDM2-32, 64, or 128) to support more concurrent calls or media services.
Q
Is rack-mounting hardware included?
A
Yes, the bundle includes rack-mount brackets and hardware for 19-inch standard racks.
Q
What warranty and support options are available?
A
It comes with Cisco SMARTnet Service Provider lifetime support, including 24x7 access to updates, hardware replacement, and expert technical assistance.
Q
When will the Cisco 2811 reach end-of-life?
A
Cisco has announced the 2811 series End-of-Life in 2023, with end-of-support scheduled for December 2025; consider migrating to ISR 4000 series.
Q
How do I configure SRST on the 2811 Voice Bundle?
A
Use IOS commands: "telephony-service ip source-address <router_ip> port 2000", "ephone-dn …”, and "failover mode sf-external"; then apply FL-SRST licensing.
Q
Where can I purchase the CISCO2811-SRST/K9 bundle?
A
You can order through official Cisco partners, authorized resellers, or the Cisco online store by referencing SKU CISCO2811-SRST/K9.