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CISCO2821-SRST/K9
- Description:
- 2821 Voice Bundle w/ PVDM2-32,FL-SRST-50,SP Serv,128F/512D
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CISCO2821-SRST/K9
2821 Voice Bundle w/ PVDM2-32,FL-SRST-50,SP Serv,1...
$5,395.00
$2,449.00
27 in Global Warehouse
$2,449.00
55% off
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CISCO2821-SRST/K9 Overview
Overview of CISCO2821-SRST/K9 – CISCO2821-SRST/K9 is a fixed-integrated services router engineered with a robust, compact architecture that incorporates dual power options via AC supply for continuous operation and reliability. It delivers precise WAN/LAN connectivity with dual WAN interfaces and two integrated 10/100 Ethernet LAN ports, while offering built‐in voice, security, and data services for scalable enterprise communications.
This router further features modular capabilities through dedicated expansion slots for Enhanced High-Speed WAN Interface Cards (EHWIC), supporting IPSec VPN and other secure remote connectivity options. With a design optimized for throughput, redundancy, and performance, CISCO2821-SRST/K9 is ideally suited for enterprise branch deployments and small business environments requiring integrated services and resilient connectivity.
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CISCO2821-SRST/K9 Specifications
| Product Type | Enterprise Router |
| VPN Support | IPSec |
| Power Source | AC Power Supply |
| Routing Protocols | OSPF / EIGRP / RIP / BGP / Static Routing |
| Broadband | N/A |
| Architecture | Fixed |
| 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 | IP, IGRP, OSPF, EIGRP, RIP, BGP |
| Remote Management | Telnet, SSH, SNMP, HTTP, HTTPS |
| Compliance Standards | FCC, CE, RoHS |
| Wireless Support | No |
| Speed/Capacity | N/A |
| Firewall Features | Yes |
| Features | VPN / Voice / NAT / ACL / QoS |
| Use Case | Enterprise / Small Business |
| Management | Managed |
| Form Factor | Desktop |
| Integrated Services | Voice / Security / Data |
| 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 |
| Expansion Slots | EHWIC |
| Modular Slots Available | 2 Slots |
| Stacking Capability | No |
| 5G Support | No |
| Memory | 256 MB |
| Flash Memory | 256 MB |
| Interface Ports | RJ-45 |
| Power | 72W |
| Device Type | Router |
| Product Name | CISCO2821-SRST/K9 |
| Height | 1.8 inches |
| Width | 17.7 inches |
| Depth | 15.5 inches |
| Weight | 10 lbs |
CISCO2821-SRST/K9 Use Case
Branch Office Telephony Resilience During WAN Outages
In a multi-site enterprise, the CISCO2821-SRST/K9 Voice Bundle w/ PVDM2-32, FL-SRST-50 & SP Services delivers automated call survivability when the primary SIP trunk or MPLS link fails. By activating SRST fallback on the 2821 router, remote offices maintain up to 50 concurrent calls locally, route critical PSTN traffic and preserve unified communications continuity. Outcome: zero voice downtime, uninterrupted customer service and safeguarded revenue during network interruptions.
High-Density Call Center DSP Acceleration and Cost Optimization
A 100-seat customer care center leverages the PVDM2-32 module in the CISCO2821-SRST/K9 platform to offload media processing, G.711/ACR transcoding and conferencing from central servers. With 32 DSP channels and FL-SRST for local call handling, the solution scales voice capacity without adding external gateways. Outcome: reduced CAPEX/OPEX, consistent QoS, and simplified voice channel licensing for rapid campaign onboarding.
Secure Emergency Voice Services for Healthcare and Compliance
A regional hospital deploys the CISCO2821-SRST/K9 Voice Bundle w/ 128F/512D flash and SP Services to meet HIPAA requirements for secure, survivable voice communications. In the event of VoIP platform maintenance or WAN failure, SRST ensures emergency and physician-to-physician calls route via PSTN or backup SIP trunks with preserved call logs. Outcome: patient-critical call availability, regulatory compliance and centralized management with minimal infrastructure footprint.
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 | Fixed | Modular | Fixed | Fixed | 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 | Firewall / Intrusion Prevention / VPN | Firewall / Intrusion Prevention |
| Compliance Standards | FCC, CE, RoHS | FCC / CE | FCC / CE / RoHS | FCC, CE | IEEE 802.3, IEEE 802.2 |
| Connectivity Type | Wired | Wired | Wired | Wired | Wired |
| Depth | 15.5 inches | N/A | N/A | 12.4 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 | EHWIC | EHWIC | EHWIC / NIM | EHWIC | EHWIC |
| Features | VPN / Voice / NAT / ACL / QoS | Modular / VPN / Firewall / Integrated Security | VPN / VoIP / IPv6 Compatible / Firewall | VPN / IPv6 Compatible / Firewall / Intrusion Prevention | VPN / Firewall / IPv6 Compatible |
| Firewall Features | Yes | Yes | Yes | Yes | Yes |
| Flash Memory | 256 MB | 256 MB | 256 MB | 256 MB | 256 MB |
| Form Factor | Desktop | Rack-mount | Desktop / Rack-mount | Rack-mount | Rack-mount |
| Height | 1.8 inches | N/A | N/A | 1.7 inches | 1.75 inches |
| High Availability Support | Supported | Not Supported | Not Supported | Not Supported | Supported |
| Integrated Services | Voice / Security / Data | Voice / Security | Voice / Video | Voice | Voice |
| Interface Ports | RJ-45 | RJ-45 | RJ-45 | RJ-45 | RJ-45 |
| LAN Ports | 2 LAN Ports | 2 LAN Ports | 2 LAN Ports | 2 LAN Ports | Modular LAN |
| Management | Managed | Managed | Managed | Managed | Managed |
| Memory | 256 MB | 256 MB | 512 MB | 512 MB | 256 MB |
| Modular Slots Available | 2 Slots | 2 Slots | 2 Slots | 2 Slots | 2 Slots |
| Network Protocols | IP, IGRP, OSPF, EIGRP, RIP, BGP | IPv4 / IPv6 | IPv4 / IPv6 | OSPF, RIP, EIGRP, BGP, Static Routing | TCP/IP, IPX, AppleTalk |
| Power | 72W | 350 W | 85 W | 245W | 160 Watts |
| Power Source | AC Power Supply | AC Power Supply | AC Power Supply | AC Power Supply / Redundant | AC Power Supply |
| Product Name | CISCO2821-SRST/K9 | Cisco 2811 Integrated Services Router - High Security (C2811-H-VSEC/K9) | Cisco 2801 Integrated Services Router | CISCO2821-HSEC/K9 | 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 | Telnet, SSH, SNMP, HTTP, HTTPS | Telnet / SSH / SNMP / HTTP/HTTPS | Telnet / SSH / SNMP | Telnet, SSH, SNMP | Telnet, SSH, SNMP |
| Routing Protocols | OSPF / EIGRP / RIP / BGP / 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 | N/A | 10/100 | 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 | 0.025 Gbps | 50 Mbps | 0.075 Gbps | 0.075 Gbps | 0.05 Gbps |
| Use Case | Enterprise / Small Business | Enterprise | Enterprise | Enterprise | Enterprise |
| VPN Support | IPSec | IPSec / SSL VPN | IPSec / DMVPN | IPSec | IPSec / DMVPN |
| WAN Configuration | Dual WAN | WAN | Dual WAN | WAN | Dual WAN |
| WAN Ports | 2 WAN | 2 WAN | 2 WAN | 2 WAN | 2 WAN |
| Weight | 10 lbs | N/A | N/A | 12 lbs | 15 lbs |
| Wi-Fi Standard | N/A | N/A | N/A | N/A | N/A |
| Width | 17.7 inches | N/A | N/A | 17.2 inches | 17.3 inches |
| Wireless Support | No | No | No | No | No |
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Questions & Answers
Q
What is the Cisco 2821 Voice Bundle CISCO2821-SRST/K9?
A
The Cisco 2821 Voice Bundle CISCO2821-SRST/K9 is an integrated voice router package featuring a PVDM2-32 DSP module, FL-SRST-50 survivable remote site telephony, SP services license, 128 MB flash, and 512 MB DRAM.
Q
Which key features come with the 2821 Voice Bundle?
A
Key features include hardware-based voice DSP (PVDM2-32), fault-tolerant Cisco SRST-50 for voice continuity, service provider licensing, and ample memory (128 MB flash/512 MB DRAM).
Q
How does PVDM2-32 enhance voice performance?
A
The PVDM2-32 module provides 32 DSP channels for advanced conferencing, transcoding, and media termination, ensuring high-quality voice and efficient resource utilization.
Q
What is FL-SRST-50 and why is it important?
A
FL-SRST-50 (Feature License for Survivable Remote Site Telephony-50) enables up to 50 remote IP phones to register locally during WAN outages, maintaining voice continuity.
Q
What does the SP Serv license include?
A
The SP Serv license grants service provider feature sets, including advanced routing protocols, QoS, MPLS support, and secured IPTV delivery.
Q
How many IP phones can the Cisco 2821 CISCO2821-SRST/K9 support?
A
With FL-SRST-50, the router supports up to 50 survivable IP phone registrations, while the total IP phone capacity depends on available PVDM DSP resources.
Q
What is the maximum concurrent call capacity?
A
Concurrent call capacity is determined by the PVDM2-32 module, supporting up to 32 simultaneous G.711 calls or a mix of codecs based on DSP allocation.
Q
What are the memory and storage specifications?
A
This bundle includes 128 MB of onboard flash memory for IOS images and configurations, plus 512 MB of DRAM for runtime processes and voice processing.
Q
Which licenses are required to activate full voice features?
A
You need the FL-SRST-50 license for survivable telephony and the SP Serv license for service provider-grade routing; IOS Unified Communications features are pre-licensed.
Q
Can I upgrade the DSP capacity on the 2821 router?
A
Yes, the Cisco 2821 supports additional PVDM2 modules (up to hardware limits) to increase DSP channels for higher call and conferencing loads.
Q
What is Cisco SRST and how does it work?
A
Cisco Survivable Remote Site Telephony (SRST) provides fallback call control during WAN failures, allowing local gateway call processing until the central call manager is restored.
Q
Is the Cisco 2821 suitable for small and medium businesses?
A
Yes, the Cisco 2821 Voice Bundle balances performance and cost, making it ideal for small to medium enterprises requiring integrated voice, data, and survivability.
Q
What power and environmental specifications apply?
A
The Cisco 2821 uses an internal universal power supply (100–240 VAC, 50–60 Hz) and operates in 0–40 °C ambient temperature with standard rack-mount form factor.
Q
What warranty and support options are available?
A
Cisco offers a limited lifetime hardware warranty with return-to-factory repair, plus optional SMARTnet for 24×7 support, software updates, and expedited hardware replacement.
Q
How do I perform the initial setup of the 2821 Voice Bundle?
A
Connect the console to configure IOS, assign IP addresses, enable PVDM DSP resources, install FL-SRST-50 and SP Serv licenses via CLI, and register IP phones.
Q
What is the product lifecycle status of the CISCO2821-SRST/K9?
A
The Cisco 2821 is in the mature phase of its lifecycle; check Cisco’s End-of-Life announcements for software release support and upgrade paths to newer ISR platforms.
