Cisco 2821 Voice Bundle w/ PVDM2-32, FL-SRST-50 - CISCO2821-SRST/K9

Product Overview of CISCO2821-SRST/K9

General Information

• Brand: Cisco
• Manufacturer: Cisco Systems - Enterprise
• Model: CISCO2821-SRST/K9
• Release Year: 2005
• Part Number: CISCO2821-SRST/K9
• Product Type: Voice/Fax Module

Physical Dimensions

• Width: 43.82 cm
• Depth: 41.66 cm
• Height: 8.89 cm
• Weight: 11.4 kg

Environmental Conditions

• Operating Humidity Range: 5% - 95>#/li###
• Maximum Operating Temperature: 40°C
• Minimum Operating Temperature: 0°C

Memory and Storage

Memory Capacity

• Installed RAM: 256 MB
• Maximum RAM: 1 GB
• Flash Memory: 64 MB (installed), 256 MB (maximum)

Connectivity and Expansion

Expansion Slots

• HWIC Slots: 4 (total), 4 (available)
• AIM Slots: 2 (total), 2 (available)
• NME-X Slot: 1 (total), 1 (available)
• EVM Slot: 1 (total), 1 (available)
• PVDM Slots: 3 (total), 2 (available)
• Memory Slots: 2
• CompactFlash Slot: 1

Connectivity Interfaces

• Ethernet Ports: 2 x 10Base-T/100Base-TX/1000Base-T - RJ-45
• USB Ports: 2
• Management Ports: 1 x Console, 1 x Auxiliary

Protocols and Security

Network Protocols

• Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet
• Network/Transport Protocol: IPSec

Security Features

• Encryption Algorithms: DES, Triple DES, AES
• Firewall Protection: Yes
• Encryption: 128-bit, 256-bit
• VPN Support: Yes
• MPLS Support: Yes
• URL Filtering: Yes

Power and Management

Power Specifications

• Power Consumption: 240 watts
• Power Supply: Internal

Remote Management

• Remote Management Protocol: SNMP v3
• Status Indicators: Power, Link/Activity

Telephony Features

IP Telephony Capabilities

• Echo Cancellation: G.168
• Voice Codecs Supported: G.711, G.723.1, G.728, G.729, G.729a, G.729ab, G.726

Software and System Requirements

Operating Systems and Software

• Operating System Provided: Cisco IOS SP Services
• Required OS: Microsoft Windows 98 Second Edition
• Included Software: Cisco Survivable Remote Site Telephony (48-phone license)

Environmental Parameters

Engineered to operate in various conditions, the Cisco 2821 supports:

• Operating humidity: 5% to 95>#/li###
• Operating temperature: 0 °C to 40 °C

Expansion and Connectivity Options

The Cisco 2821 router offers extensive expansion capabilities and multiple connectivity options, including:

• Expansion slots: 4 HWIC, 2 AIM, 1 NME-X, 1 EVM, 3 PVDM, 2 memory, and 1 CompactFlash
• Interfaces: 2 x RJ-45 ports (10Base-T/100Base-TX/1000Base-T), 2 x USB ports, 1 x console port, and 1 auxiliary port

Compliance with Industry Standards

This router meets rigorous compliance standards, ensuring high levels of security and performance:

• Standards: IEEE 802.3af, CISPR 22 Class A, CISPR 24, VCCI Class A ITE, EN 61000-3-2, EN55022 Class A, UL 60950, and more

Networking and Security Features

The Cisco 2821 is equipped with cutting-edge networking and security capabilities:

• Data link protocols: Ethernet, Fast Ethernet, and Gigabit Ethernet
• Encryption algorithms: DES, Triple DES, AES
• Security features: Firewall protection, VPN support, MPLS support, URL filtering, 128-bit and 256-bit encryption

Memory and Remote Management

With substantial memory and advanced management protocols, this router ensures smooth operation:

• RAM: 256 MB (upgradable to 1 GB)
• Flash memory: 64 MB (expandable to 256 MB)
• Management: SNMP v3 for secure and efficient network management

IP Telephony and Voice Features

The Cisco 2821 enhances voice communications with built-in IP telephony features and multiple codecs:

• Voice codecs: G.711, G.723.1, G.728, G.729, G.729a, G.729ab, G.726
• Telephony features: Echo cancellation (G.168) for clearer voice quality

Power Supply and Software Requirements

The device is powered by an internal power supply and supports various operating systems:

• Power device: Internal power supply for consistent energy management
• Software requirements: Cisco IOS SP Services and compatibility with Microsoft Windows 98 Second Edition
• Included software: Cisco Survivable Remote Site Telephony with a 48-phone license

Key Features of Cisco 2821 Voice Bundle

• Integrated Voice and Data: The Cisco 2821 Voice Bundle offers seamless integration of voice, data, and video capabilities in a single platform, enhancing communication efficiency and reducing operational costs.
• Scalable Telephony: Equipped with PVDM2-32 (Packet Voice Digital Signal Processor Module) and FL-SRST-50 (Survivable Remote Site Telephony), this bundle provides flexible telephony solutions with up to 50 IP phones supported during WAN failures.
• Advanced Security Features: The integrated security functions, including firewall, VPN, and intrusion prevention, safeguard sensitive data and ensure secure communications across the network.
• High Performance: Powered by a high-speed processor, the 2821 ISR delivers fast and reliable performance, handling large volumes of traffic with ease.
• Modular Design: The modular architecture of the Cisco 2821 allows for extensive customization and expansion, accommodating additional voice, data, and network modules to meet growing business needs.

Benefits of the Cisco 2821 Voice Bundle

• Cost Efficiency: By consolidating multiple network functions into a single device, the Cisco 2821 Voice Bundle reduces equipment costs, power consumption, and management overhead.
• Business Continuity: The FL-SRST-50 ensures uninterrupted voice services even during WAN outages, maintaining communication and operational efficiency at remote sites.
• Enhanced Productivity: With integrated voice and data features, businesses can streamline communication, reduce call handling times, and improve overall productivity.
• Improved Security: Advanced security protocols protect the network from unauthorized access, cyber threats, and data breaches, ensuring compliance with industry standards.

Detailed Analysis of the PVDM2-32 Module

What is PVDM2-32?

The PVDM2-32 module, or Packet Voice Digital Signal Processor Module, is an essential component of the Cisco 2821 Voice Bundle. It enables high-density voice processing capabilities, supporting advanced voice features such as conferencing, transcoding, and voice termination. This module is critical for delivering superior voice quality and efficient call handling in enterprise environments.

Key Capabilities of the PVDM2-32

• High Voice Density: Supports up to 32 channels of medium-complexity voice, facilitating a large number of simultaneous calls without compromising quality.
• Voice Optimization: Optimizes voice traffic using advanced codec technology, ensuring clear and consistent audio quality across all calls.
• Scalable Voice Processing: Easily upgradable, allowing for the addition of more DSP resources as the business grows and communication needs increase.
• Flexible Deployment: Supports a wide range of voice applications, including conferencing, transcoding, and media termination, providing adaptable solutions for various business scenarios.

Benefits of PVDM2-32 in Cisco 2821

• Enhanced Voice Quality: The PVDM2-32 module ensures superior voice clarity, reducing jitter, echo, and latency, thus enhancing the overall communication experience.
• Reduced Bandwidth Usage: By compressing voice traffic and managing codecs efficiently, this module helps lower bandwidth consumption, optimizing network resources.
• Improved Call Handling: Supports advanced call features, including conferencing and voice messaging, enabling businesses to handle calls more effectively.
• Future-Proof Technology: As businesses grow, the PVDM2-32 module can be upgraded to support more voice channels, ensuring that the Cisco 2821 Voice Bundle remains relevant over time.

Understanding FL-SRST-50: Survivable Remote Site Telephony

Role of FL-SRST-50 in Business Continuity

The FL-SRST-50 license enables Survivable Remote Site Telephony, a critical feature that provides call control redundancy for remote sites. In the event of a WAN failure, SRST ensures that IP phones remain operational, allowing internal calls and PSTN access without requiring the main call manager to be online. This functionality is crucial for maintaining business continuity and communication efficiency during network disruptions.

Key Features of FL-SRST-50

• Support for 50 IP Phones: FL-SRST-50 supports up to 50 IP phones, making it ideal for small to medium-sized branch offices that require reliable voice services during outages.
• Automatic Failover: SRST automatically engages when the connection to the central call manager is lost, ensuring seamless transition and uninterrupted communication.
• Local Call Control: Provides local call control during WAN failures, allowing employees to continue making internal and external calls without service disruption.
• Easy Configuration: SRST can be easily configured on the Cisco 2821 router, with minimal setup required to activate the feature and maintain ongoing operations.

Benefits of Using FL-SRST-50

• Increased Resilience: SRST provides a reliable fallback for voice services, ensuring that critical communications remain operational even during WAN failures.
• Cost Savings: By maintaining local call control without additional hardware, businesses can reduce costs associated with redundant call management systems.
• Improved User Experience: Employees experience minimal disruption during outages, allowing them to continue working and communicating effectively.
• Scalability: FL-SRST-50 is scalable, supporting additional IP phones as business needs grow, ensuring continued functionality as the organization expands.

Security and Networking Capabilities of the Cisco 2821 Voice Bundle

Advanced Security Features

The Cisco 2821 Voice Bundle is equipped with comprehensive security features that protect against a wide range of threats, including unauthorized access, malware, and data breaches. With integrated firewall, VPN, and intrusion prevention systems, this bundle provides multi-layered security that helps safeguard critical business communications.

Firewall and Intrusion Prevention

• Stateful Inspection Firewall: The firewall feature monitors incoming and outgoing traffic, allowing only legitimate connections, enhancing network security.
• Intrusion Prevention System (IPS): Detects and mitigates potential threats by analyzing traffic patterns and blocking malicious activities in real-time.
• VPN Support: Secure VPN connections ensure encrypted data transfer between remote sites and headquarters, protecting sensitive information from interception.

Networking Capabilities

The Cisco 2821 router within the voice bundle supports a wide array of networking capabilities, making it a versatile solution for various communication needs. With multiple interface options, including Ethernet, T1/E1, and serial connections, the router can seamlessly integrate into existing network infrastructures.

Scalable Network Connectivity

• Multiple WAN Interfaces: The Cisco 2821 supports multiple WAN interfaces, providing flexible connectivity options for different networking requirements.
• Gigabit Ethernet Ports: High-speed Ethernet ports facilitate fast and efficient data transfer, supporting large-scale data and voice traffic.
• Integrated Services Router: Combines routing, voice, and security services into a single platform, reducing the need for multiple devices and simplifying network management.