Cisco 2821 Integrated Services Router with Cisco CallManager Express (CCME) Bundle
General Information
Model
- Product: Cisco 2821 Integrated Services Router
- Bundle: Includes Cisco CallManager Express (CCME)
- Product Family: Cisco 2800 Series ISR
- Form Factor: 2RU rack-mountable
Processor & Memory
System Performance
- Processor: Dual network processing engines
- Default DRAM: 256 MB (upgradeable to 768 MB)
- Default Flash Memory: 64 MB (upgradeable to 256 MB)
WAN Connectivity
Interface Slots
- High-Speed WAN Interface Card (HWIC) Slots: 4
- Supports HWIC, WIC, and VIC cards
- Built-in Interfaces: 2x 10/100 Fast Ethernet ports
LAN Connectivity
Ethernet Ports
- 2x 10/100 Fast Ethernet RJ-45 ports (integrated)
- Additional ports via expansion modules
Voice Capabilities (CCME Bundle)
CallManager Express Features
- Maximum IP Phones: Up to 48 Cisco IP phones (depending on license)
- Maximum Voice Calls: Up to 96 simultaneous calls
- Voicemail: Integrated Cisco Unity Express support (optional)
- Phone Features: Call transfer, hold, conferencing, voicemail, auto-attendant
- Supported Protocols: SCCP, SIP
Voice Interfaces
- Voice/WAN Interface Card (VWIC) slots for analog/digital voice connectivity
- Supports FXS, FXO, T1/E1 voice cards
- Analog Phone Support: Via FXS modules
- PSTN Connection: Via FXO or T1/E1 PRI modules
Expansion Slots
Module Slots
- 4x HWIC slots (High-Speed WAN Interface Cards)
- 1x Advanced Integration Module (AIM) slot
- 1x Network Module (NM) slot
Security Features
Integrated Security
- Cisco IOS Firewall
- VPN support (IPSec, SSL VPN)
- Intrusion Prevention System (IPS) capable
- Network Address Translation (NAT/PAT)
- Access Control Lists (ACLs)
Performance
Throughput
- System Throughput: Up to 91 Mbps
- VPN Throughput: Up to 32 Mbps (3DES)
- Concurrent VPN Tunnels: Up to 800
Management
Management Options
- Cisco IOS Command Line Interface (CLI)
- Web-based GUI (Cisco Configuration Professional)
- SNMP support
- Syslog
- Console port (RJ-45)
- Auxiliary port (RJ-45)
Physical Specifications
Dimensions & Weight
- Height: 3.5″ (8.89 cm) – 2RU
- Width: 17.25″ (43.82 cm)
- Depth: 15.2″ (38.61 cm)
- Weight: Approximately 19 lbs (8.6 kg) with modules
Power
Power Specifications
- Input Voltage: 100-240 VAC, 50-60 Hz
- Power Consumption: 75W typical, 140W maximum
- Redundant Power Supply: Optional
Environmental
Operating Conditions
- Operating Temperature: 0°C to 40°C (32°F to 104°F)
- Storage Temperature: -25°C to 70°C (-13°F to 158°F)
- Operating Humidity: 10% to 85% (non-condensing)
Compliance & Standards
Certifications
- Safety: UL 60950, CSA 22.2 No. 60950, IEC 60950, EN 60950
- EMC: FCC Part 15 Class A, ICES-003 Class A, EN 55022 Class A, CISPR 22 Class A
- Network Standards: IEEE 802.3, 802.1Q, 802.1p
Software
Operating System
- Cisco IOS Software
- CallManager Express software included
- IP Base or Advanced Security feature set required
Supported Features
- VoIP (Voice over IP)
- QoS (Quality of Service)
- VLAN support
- Routing protocols: RIP, EIGRP, OSPF, BGP
- DHCP server/client
- PPPoE, Frame Relay, HDLC, PPP
Typical Applications
Use Cases
- Small to medium-sized business (SMB) voice and data networking
- Branch office connectivity
- Unified communications (voice, video, data)
- Secure VPN remote access
- IP telephony system with integrated call processing
Warranty
Standard Warranty
- Typically 1-year limited hardware warranty
- 90 days software warranty
- Extended service contracts available (Cisco SmartNet)
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Note: The Cisco 2821 is a legacy product (End-of-Sale/End-of-Life). This information is for reference purposes. For current solutions, please consult Cisco’s latest product offerings.







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