Dial Shelf Filter Module

Dial Shelf Filter Module

The Cisco AS5800 is equipped with a passive DC power filter in the dial shelf, which contains a broadband electromagnetic interference (EMI) filter and circuitry for monitoring power coming into the dial shelf. The DC power filter is housed in the filter module, which resides in the dial shelf between the two PEMs.

The DC power filter supports the following functions:

•DC-input power filtering and power distribution

The filter module first receives –48 VDC power from the PEMs using analog isolation circuits. The DC power passes through a broadband EMI filter in the filter module, then passes to a DC-to-DC converter on the dial shelf controller card, where it is converted and then routed back to the backplane for distribution to the dial shelf cards. A single filter module supports a fully configured dial shelf.

•Maintenance monitoring

The filter module contains the environmental maintenance bus (MBus) module with a logic card, which carries monitor signals throughout the dial shelf by way of two 10-pin molex MiniFit connectors.

The front and top of the filter module are perforated for minimum air flow restriction. There are no connectors accessible from the front; however, a DB-9 connector at the base of the filter module (visible only from below the dial shelf) connects a monitor cable to an optional AC-input power shelf.

Figure 1-15shows a filter module installed in the rear of a Cisco 5814 dial shelf.

Cisco AS5800 Product Overview 1-27

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Cisco Systems AS5800 manual Dial Shelf Filter Module
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AS5800 specifications

Cisco Systems has long been a leader in the networking and telecommunications field, and its AS5800 series of routers exemplify this tradition. The AS5800, along with the AS5850, AS5350, AS5400, and AS5300, provides robust solutions for service providers and enterprise-level networking applications. Each of these models has distinct features and characteristics that cater to the evolving demands of internet traffic and data processing.

The Cisco AS5800 is designed for high-capacity routing and optimized for broadband services. It supports a wide range of services, including voice, data, and video applications, making it a versatile option for service providers looking to deliver integrated solutions. It is equipped with advanced quality of service (QoS) features that ensure bandwidth is allocated effectively, holding strong even under heavy traffic conditions.

In comparison, the AS5850 offers superior processing capabilities and is typically utilized in larger-scale implementations. This model supports high-density interfaces, allowing numerous connections without compromising performance. Its architecture includes enhanced MPLS (Multiprotocol Label Switching) support, enabling more efficient traffic management and better utilization of network resources.

The AS5350 is known for its scalability and energy efficiency, ideal for voice-over-IP (VoIP) and media gateway applications. It supports various telephony features, such as protocol interworking and transcoding, making it a preferred choice for organizations focusing on digital voice technologies. The AS5300, while slightly older, continues to be a valuable asset for less demanding networks, offering reliable performance with VoIP capabilities and basic data applications.

The AS5400 bridges the gap between high-performance routing and operational efficiency. It incorporates Cisco's proprietary technologies to ensure seamless connectivity and robust failover systems. This model is highly regarded for its security features, protecting network integrity and providing peace of mind for businesses relying on sensitive data transfer.

Overall, Cisco’s AS5800 series showcases a progressive evolution of routing capabilities with enhanced features tailored for resilience, scalability, and performance. These routers not only address the technical needs of modern networks but also strategically position organizations for future growth in an increasingly digital world. Each model, with its unique attributes, continues to support the varied demands of global communication infrastructures.
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