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by Cisco
Product Line: Cisco 2900 Series
Product Type: Integrated Services Router
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Original price $0.00 - Original price $0.00
Original price
$0.00 - $0.00
Current price $0.00
Title: Surplus

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Product Description

The C2921-CME-SRST/K9 Cisco router features three 10/100/1000 onboard WAN ports, two onboard GE slots, and supports up to 100 Cisco Unified SRST sessions and 100 Cisco Unified CCME sessions. It is equipped with 512 MB of DRAM and offers diverse connectivity options including three RJ-45 ports, one SFP port, four EHWIC slots, two DSP slots, and one ISM slot. Power efficiency is optimized with a typical power consumption of less than 60 W, a maximum power capacity of 320 W with an AC power supply, and support for AC, PoE, and DC power-supply options.

FAQs for the C2921-CME-SRST/K9

  • What is the number of onboard Gigabit Ethernet (GE) slots available?
    Answer: 2 onboard GE slots are available.
  • How many DSP slots does the device feature?
    Answer: The device includes 2 DSP slots.
  • Can you detail the number of Enhanced High-Speed WAN Interface Card (EHWIC) slots present?
    Answer: There are 4 EHWIC slots present on the device.
  • What is the capacity for Cisco Unified SRST sessions?
    Answer: The device supports up to 100 Cisco Unified SRST sessions.
  • What are the power specifications, including typical and maximum power?
    Answer: Typical power consumption is less than 60 W, with a maximum of 320 W when using an AC power supply.
  • How many Integrated Services Module (ISM) slots does the device have?
    Answer: There is 1 ISM slot on the device.
  • What are the available power-supply options?
    Answer: Power-supply options include AC, PoE, and DC.
  • How much DRAM is equipped on the device?
    Answer: The device is equipped with 512 MB of DRAM.
  • What is the total number of onboard WAN 10/100/1000 ports?
    Answer: There are a total of 3 onboard WAN 10/100/1000 ports.
  • What software does the device run?
    Answer: The device runs Cisco ONE software.

Product Review

The CISCO C2921-CME-SRST/K9 offers a versatile array of connectivity options, including two onboard GE slots, four EHWIC slots, and support for up to 100 Cisco Unified SRST and CCME sessions, catering to medium-sized enterprise needs. However, the device comes with only 512 MB of DRAM, which may limit performance under heavy loads or with advanced configurations. Its power flexibility, supporting AC, PoE, and DC with a maximum power draw of 320 W, along with a comprehensive range of ports including USB and SFP, makes it adaptable to various network infrastructures and setups.


The CISCO C2921-CME-SRST/K9 is a versatile and efficient solution for medium-sized businesses and enterprise branch offices, offering advanced features for voice, video, data, and mobility services. This integrated services router facilitates secure and reliable communication with a high degree of performance. Key hardware specifications include two onboard Gigabit Ethernet slots, enhancing network connectivity and throughput. To support a wide range of applications, the router is equipped with two Digital Signal Processor (DSP) slots, essential for voice and video processing. Expansion is a prominent feature of this model, demonstrated by its four Enhanced High-Speed WAN Interface Card (EHWIC) slots, allowing for further customization and functionality. Additionally, the unit includes one Internal Services Module (ISM) slot, providing flexibility for various service integrations. Power efficiency is a critical aspect of the CISCO C2921-CME-SRST/K9, with typical power consumption being less than 60W, while the maximum power with an AC power supply reaches up to 320W. This ensures that the device operates efficiently, contributing to lower operational costs. The router is designed with 512 MB of DRAM, supporting the Cisco ONE software, which simplifies IT operations through automation and policy-driven management. The router supports up to 100 Cisco Unified SRST sessions and 100 Cisco Unified CCME sessions, making it suitable for environments requiring a high level of voice communication resilience and scalability. For connectivity, it features three 10/100/1000 onboard WAN ports, three RJ-45 ports, and one SFP port, offering a mix of speed and media types for various networking requirements. Additionally, the device includes: - One service module slot for enhanced service integration. - Two external USB 2.0 flash memory slots (Type A) for increased storage options. - One USB console port (Type B) and one serial console port for management. - One serial auxiliary port for additional connectivity. Power supply options are flexible, including AC, Power over Ethernet (PoE), and DC, with external Redundant Power Supply (RPS) support via the Cisco RPS 2300. This ensures that the device can adapt to various power environments and configurations. The AC input voltage is auto-ranging from 100 to 240 VAC, with an input current range of 3.4 to 1.4 A, accommodating different global standards. The physical dimensions of the router are 3.5 x 17.25 x 18.5 inches, fitting a 2 Rack Unit (RU) space, making it compact enough for a standard rack mount while providing ample room for internal hardware and expansion. In summary, the CISCO C2921-CME-SRST/K9 integrated services router offers a comprehensive solution for advanced communications and networking. Its combination of performance, flexibility, and power efficiency makes it an ideal choice for businesses looking to enhance their networking infrastructure with a reliable, scalable, and feature-rich device.


Part Number CISCO C2921-CME-SRST/K9
Manufacturer Cisco
GE Integrated Ports 2
DSP Slots Available 2
EHWIC Slots Count 4
ISM Slots Quantity 1
Average Power Consumption <60 W
Peak Power with AC Supply 320 W
Memory (DRAM) 512 MB
Operating System Cisco ONE
Max SRST Sessions 100
Max CCME Sessions 100
Integrated WAN Ports 3
RJ-45 Interfaces 3
SFP Module Slots 1
Service Module Expansion Slots 1
USB 2.0 Ports (Type A) 2
USB Console Interface (Type B) 1
Console Port for Serial Connection 1
Auxiliary Serial Port 1
Power Supply Types AC, PoE, DC
Compatible with External RPS Cisco RPS 2300
Voltage Requirement (AC) 100 to 240 VAC Autoranging
Current Draw (AC) 3.4 to 1.4 A
Dimensions 3.5 x 17.25 x 18.5 in.
Unit Height for Rack 2 RU

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