Preparing the Dial Shelf for Rack-Mount

The rack-mount kit includes the following parts:

•Six rack-mount brackets for mounting the dial shelf in the rack

•Two support brackets

•A total of 12 M5 x 10-mm Phillips flathead screws to secure the rack-mount brackets to the dial shelf

•A total of 16 slotted 10-32 x 3/8 screws for rack installation

In addition, you might need the following external equipment, especially when installing a split dial shelf configuration:

•Data service unit (DSU) to connect each serial port to an external network

•A serial port adapter cable for each serial port to connect the port with a remote device or network

•T1 channel service unit/data service unit (CSU/DSU) that converts the HDLC synchronous serial data stream into a T1 data stream with the correct framing and ones density to connect. Some telephone systems require a minimum number of 1 bit per time unit in a data stream, called ones density, to connect a serial port to a T1 network. Several T1 CSU/DSU devices are available as additional equipment, and most provide either a V.35, EIA/TIA-449, or EIA-530 electrical interface.

•Ethernet transceiver

•Token Ring media attachment unit (MAU)

•Optical bypass switch or concentrator for multimode Fiber Distributed Data Interface (FDDI) connections

Preparing the Dial Shelf for Rack-Mount

The Cisco 5814 dial shelf is shipped with the blower assembly and all dial shelf cards (trunk and modem cards) and dial shelf controller cards installed in the chassis. Fully loaded, the dial shelf weighs 278 lb (126.1 kg).

Before installing the Cisco 5814 in an equipment rack, we recommend that you remove the blower assembly, DC PEMs, dial shelf cards, and dial shelf controller cards from the dial shelf, then reinstall them after the dial shelf is mounted in the rack. (If you are using a forklift or other machinery to lift the dial shelf, you might want to omit this process.)

After you remove the blower assembly, PEMs, and the installed cards, you will mount the rack-mount brackets on the dial shelf chassis and install the dial shelf in the rack.

Removing the Blower Assembly

Caution The blower assembly weighs 27.5 lb (12.5 kg). Use two hands when removing or replacing the blower assembly.

To remove the blower assembly, complete the following steps:

Step 1 Attach an ESD-preventive wrist strap between you and an unpainted chassis surface.

Step 2 Loosen the two captive screws on the blower assembly front panel. (See Figure 2-3.)

Step 3 Grasp the blower assembly handle with one hand and pull the blower assembly straight toward you, about halfway out of the slot. (See Figure 2-3.)

2-6Cisco AS5800 Universal Access Server Hardware Installation Guide

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Cisco Systems AS5800 manual Preparing the Dial Shelf for Rack-Mount, Removing the Blower Assembly
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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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