Chapter 1 Cisco ONS 15310-MA SDH Shelf Assembly Hardware

Fan-Tray Assembly

every 15 minutes (at 24 degrees Celsius or 120 degrees Fahrenheit), alternating between power supply inputs A and B. This allows the ONS 15310-MA SDH to blow the low current fuse when there is a failure or loss of the main fuse and report an alarm (FAN alarm).

The front of the fan-tray assembly has CRIT, MAJ, and MIN alarm LEDs that illuminate if a Critical, Major, or Minor alarm is present anywhere on the ONS 15310-MA SDH assembly.

1.10.1 Fan Speed and Power Requirements

Fan speed is controlled by temperature sensors on the 15310E-CTX-K9 card. The sensors measure the input air temperature at the fan-tray assembly. Fan speed options are low, medium, and high.

1.10.2 Fan Failure

If one or more fans fail on the fan-tray assembly, replace the entire assembly. You cannot replace individual fans. The red Fan Fail LED on the front of the fan tray illuminates when one or more fans fail. For fan-tray replacement instructions, refer to the Cisco ONS 15310-MA SDH Troubleshooting Guide. The red Fan Fail LED is unlit after you install a working fan tray.

Note The red Fan Fail LED on the front of the fan tray illuminates when only one power source is connected to the chassis, or any fuse blows.

1.10.3 Air Filter

The ONS 15310-MA SDH contains a reusable air filter (15310-MA SDH-FTF) that is installed above the fan-tray assembly. The reusable filter is made of a gray, open-cell, polyurethane foam that is specially coated to provide fire and fungi resistance. Spare filters should be kept in stock.

Caution Do not operate an ONS 15310-MA SDH without the mandatory fan-tray air filter.

1.10.4 Orderwire

Orderwire allows a crafts person to plug a phone set into an ONS 15310-MA SDH and communicate with crafts people working at other ONS 15310-MA SDH nodes or other facility equipment. The orderwire is a pulse code modulation (PCM) encoded voice channel that uses E1 or E2 bytes in the MSOH and in the regenerator section overhead.

The FTA allows simultaneous either local (RSOH signal) or express (MSOH signal) orderwire channels on an SDH ring or particular optics facility. Express orderwire also allows communication through regeneration sites when the regenerator is not a Cisco device.

You can provision orderwire functions with CTC similar to the current provisioning model for DCC channels. In CTC, you provision the orderwire communications network during ring turn-up so that all network elements (NEs) on the ring can communicate with one another. Orderwire terminations (that is, the optics facilities that receive and process the orderwire channels) are provisionable. Both express and local orderwire can be configured as on or off on a particular SDH facility. The ONS 15310-MA SDH supports up to four orderwire channel terminations per shelf. This allows linear, single ring, dual ring,

Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2

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Cisco Systems 15310-MA manual Fan Speed and Power Requirements, Fan Failure, Air Filter, Orderwire

15310-MA specifications

Cisco Systems has established itself as a leader in the networking domain, offering a wide array of solutions to meet the needs of modern businesses. Among its impressive product lineup are the Cisco 15310-CL and 15310-MA routers, designed to provide advanced network performance and reliability.

The Cisco 15310-CL is a versatile platform that primarily serves as a carrier-class router aimed at supporting high-speed data and voice services. It is built to handle the demands of large enterprises and service providers, offering a robust design that ensures maximum uptime and performance. One of its standout features is its modular architecture, which enables users to customize their configurations based on specific application needs. This scalability allows for future expansion without the need for a complete hardware overhaul.

Key technologies integrated into the Cisco 15310-CL include high-density Ethernet interfaces and a comprehensive suite of Layer 2 and Layer 3 protocol support. The device is capable of supporting multiple types of connections, including TDM, ATM, and Ethernet. This flexibility makes it an ideal choice for organizations that require seamless migration between various service types. Moreover, with features such as MPLS (Multiprotocol Label Switching) support and advanced Quality of Service (QoS) mechanisms, the router ensures that critical applications receive the necessary bandwidth and low latency required for optimal performance.

In contrast, the Cisco 15310-MA focuses on access solutions, providing a cost-effective entry point for businesses looking to enhance their network capabilities. It is well-suited for smaller offices or branch locations that need reliable connectivity without the expense and complexity associated with larger systems. The device supports a range of access methods and provides essential features like firewall capabilities, VPN support, and comprehensive security measures to protect sensitive data.

Both models benefit from Cisco's commitment to security and manageability, offering features like enhanced encryption protocols and user authentication mechanisms that help safeguard networks against threats. Additionally, they can be managed through Cisco’s intuitive software tools, simplifying configuration and monitoring tasks for IT administrators.

The Cisco 15310-CL and 15310-MA are ideal solutions for businesses seeking to enhance their network infrastructure, ensuring firms can keep pace with evolving technology demands while maintaining a focus on security and performance. Their combination of advanced features, modular capabilities, and robust support makes them valuable assets in the networking landscape.