Cisco A900-IMA4OS 4 Ports Interface Module
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Cisco A900-IMA4OS 4 Ports Interface Module ASR900 Series Refurbished

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Part Number#: A900-IMA4OS
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Short Description:
A900-IMA4OS ASR900 Series 4 Ports OC3.STM1 1-Port OC12 Plug-in Module Optical Fiber Expansion Module | Made by Cisco | Refurbished
Product Condition:
Warranty provided by ALLHDD.COM:
90 Days
Product Overview of the Cisco A900-IMA4OS 4 Ports Interface Module

In the ever-evolving landscape of networking and telecommunications, Cisco has been a key player, consistently pushing the boundaries of innovation. One of its noteworthy contributions is the Cisco A900-IMA4OS, an integral part of the ASR900 Series. This module is designed to enhance optical fiber expansion capabilities, featuring 4 Ports OC3/STM1 and a 1-Port OC12 plug-in module. In this Description we'll delve into the intricacies of the Cisco A900-IMA4OS, exploring its features, functionality, and the broader context of its application.

Key Features of the Cisco A900-IMA4OS Expansion ModuleOptical Fiber Expansion

The primary purpose of the A900-IMA4OS is to expand the optical fiber capabilities of the ASR900 Series. This expansion is crucial in scenarios where higher bandwidth and extended reach are essential. With 4 Ports OC3/STM1 and 1 Port OC12, the module offers a versatile solution for varying network requirements. The Cisco A900-IMA4OS leverages advanced optical fiber technology to deliver high-speed data transmission. This technology ensures reliable and efficient communication across the network, making it suitable for applications with demanding bandwidth needs.

OC3/STM1 Ports

The inclusion of 4 Ports OC3/STM1 signifies the module's ability to support Optical Carrier 3 and Synchronous Transport Module 1. This translates to a significant boost in the transmission capacity of the network. Whether it's handling data, voice, or video traffic, these ports play a pivotal role in ensuring smooth and efficient communication.

OC12 Port

Complementing the OC3/STM1 ports is the 1-Port OC12, providing even greater bandwidth capabilities. OC12 refers to an Optical Carrier level that is three times faster than OC3. This additional port opens up possibilities for handling higher volumes of data traffic, making the A900-IMA4OS suitable for bandwidth-intensive applications.

Compatibility with ASR900 Series

Designed specifically for the ASR900 Series, the module seamlessly integrates into Cisco's robust networking infrastructure. This compatibility ensures optimal performance, efficient resource utilization, and simplified management within the ASR900 environment.

Plug-in Module Design

The A900-IMA4OS follows a plug-in module design, aligning with Cisco's commitment to modular and scalable solutions. This design allows for easy integration into existing ASR900 Series routers, offering a seamless upgrade path for users looking to enhance their network capabilities.

Application Scenarios

Now that we've dissected the features of the A900-IMA4OS, let's explore the practical scenarios where this optical fiber expansion module shines.

High-Traffic Networks

In environments where network traffic is consistently high, such as data centers or enterprise networks with extensive communication needs, the A900-IMA4OS proves invaluable. The multiple OC3/STM1 and OC12 ports ensure that the network can handle the load efficiently, minimizing bottlenecks and latency.

Bandwidth-Hungry Applications

Applications with high bandwidth requirements, such as video streaming, virtual reality, or large-scale data transfers, benefit from the A900-IMA4OS. The expanded optical fiber capabilities cater to the demands of these bandwidth-hungry applications, providing a reliable and fast connection.

Network Expansion Projects

For organizations undergoing network expansion or upgrades, the modular design of the A900-IMA4OS simplifies the process. It seamlessly integrates into existing ASR900 Series routers, allowing for a cost-effective and efficient way to enhance network capacity.

Data Centers

In data center environments where high-speed data transfer is paramount, the Cisco A900-IMA4OS module can play a crucial role in optimizing connectivity and ensuring efficient data flow.

Telecommunication Networks

Telecommunication networks, with their diverse bandwidth requirements, can benefit from the module's versatility and scalability. The multiple ports and advanced optical fiber technology make it an ideal choice for such networks.

Enterprise Networks

Enterprises with expanding networking needs can leverage the Cisco A900-IMA4OS to enhance their network capabilities. The module's compatibility with the ASR900 Series ensures a seamless fit into enterprise-level infrastructures.

Benefits of Cisco A900-IMA4OS ASR900 Series ModuleEnhanced Connectivity

With its multiple ports catering to different bandwidths, the module significantly enhances connectivity options within the network. This is particularly advantageous in scenarios where increased data transfer rates are crucial for efficient operations.

Improved Network Performance

The utilization of advanced optical fiber technology ensures not only high-speed data transmission but also improved overall network performance. Reduced latency and enhanced reliability contribute to a more stable and responsive network infrastructure.


The four OC3/STM1 ports and the additional OC12 port provide scalability, allowing organizations to adapt to growing data requirements. This scalability is vital for future-proofing network infrastructure and accommodating expanding business needs.


The module's compatibility with the ASR900 Series ensures seamless integration into Cisco's networking ecosystem. This cohesive integration facilitates smooth communication between different network components, optimizing the overall performance of the infrastructure.

Supported Network Protocols and Standards

The Cisco A900-IMA4OS ASR900 4 Ports Interface Module supports a range of network protocols and standards that are commonly used in enterprise and service provider networks. Here are some of the supported protocols and standards:

  • Ethernet: IEEE 802.3 10BASE-T, IEEE 802.3u 100BASE-TX, IEEE 802.3ab 1000BASE-T, IEEE 802.3z 1000BASE-X, IEEE 802.3ae 10GBASE-SR/LR/ER/ZR, IEEE 802.3ba 40GBASE-SR4/LR4, IEEE 802.3bg 10GBASE-T
  • SONET/SDH: OC-3/STM-1, OC-12/STM-4, OC-48/STM-16, OC-192/STM-64
  • Fibre Channel: FC-PI-4, FC-PI-5, FC-PI-6, FC-PI-7, FC-PI-8, FC-FG-4, FC-SW-3, FC-SW-4, FC-SW-5
  • WAN: PPP, HDLC, Frame Relay, ATM, MPLS, VPLS
  • Quality of Service: DiffServ, IntServ, MPLS QoS, CoS, DSCP
  • Security: SSL, TLS, IPsec, MACsec, AAA, RADIUS, TACACS+, SSH, SNMPv3

It's important to note that the supported protocols and standards may vary depending on the software version running on the ASR900 router. It's recommended to consult the Cisco documentation or contact Cisco technical support for more detailed information on protocol and standard support.

Main Information for the Cisco A900-IMA4OS Expansion Module
  • Manufacturer: Cisco
  • Part Number or SKU# A900-IMA4OS
  • Product Type: Expansion Module
Technical Information of Interface Module
  • Media Type Supported: Optical Fiber
  • Total Number of Ports: 4
  • Network Technology: OC-3/STM-1
  • Interfaces / Ports Details: 4 x OC-3/STM-1 WAN
  • Power Draw: 30 Watt maximum

In summary, the Cisco A900-IMA4OS stands as a testament to Cisco's commitment to providing cutting-edge networking solutions. Its role in expanding optical fiber capabilities within the ASR900 Series routers makes it a valuable asset for organizations seeking reliable and scalable networking infrastructure. As we navigate the complexities of modern communication, the A900-IMA4OS emerges as a beacon of efficiency and versatility in the realm of optical fiber expansion modules.

Product Condition:
Warranty provided by ALLHDD.COM:
90 Days

About Refurbished Products

Refurbished products are typically refurbished by an Original Manufacturer or an affiliate of the manufacturer or 3rd party facility. This product may have minor blemishes due to normal product usage and doesn't necessarily come with documentation and software unless indicated, but has been well tested and generally has never had any defects.


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