Applying System Power

Figure 2-5 LightStream 2020 AC and DC Power Trays

 

Terminal

Power switch

 

block

Power inlet

 

 

 

Power

 

 

switch

 

 

 

Power switch

 

Terminal

Power inlet

 

block

H3671

 

Power

Chassis with

Chassis with

switch

DC power trays

AC power trays

 

Note When the LS2020 switch is powered up, the blowers start running and the test and control system (TCS) applies power to the cards and initiates the power-on self test (POST) sequence. LEDs on the power tray(s) and the individual cards indicate operational status, as reflected in the flow chart in Figure 2-6. The power-up sequence, including the POST, takes a minute or less.

Step 3 If the green ready (RDY) LED on each card lights up (indicating operational status), proceed to the next section “Installing Modems.” If a yellow fault (FLT) LED stays lit on any card, indicating the existence of a problem, do either of the following:

Refer to the LightStream 2020 Hardware Reference & Troubleshooting Guide to determine why the FLT LED indication occurred and how to correct it.

Temporarily remove the faulty card from the LS2020 chassis and bring up the rest of the system.

2-12LightStream 2020 Installation Guide

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Cisco Systems 2020 manual Terminal Power switch Block Power inlet Switch

2020 specifications

Cisco Systems, a global leader in networking and cybersecurity solutions, experienced a transformative year in 2020, marked by its commitment to innovation and adaptation in the face of unprecedented global challenges. As the COVID-19 pandemic reshaped the way businesses operated, Cisco responded by enhancing its offerings and focusing on remote work solutions, robust security measures, and the expansion of its cloud capabilities.

One of the main features of Cisco's 2020 portfolio was the enhancement of its Webex platform. With remote work becoming the norm, Cisco Webex proved invaluable for businesses and educational institutions, providing a comprehensive suite of tools for video conferencing, online collaboration, and virtual events. The platform saw significant upgrades, including enhanced security features and improvements in user experience, ensuring seamless communication in a distributed work environment.

In the realm of cybersecurity, Cisco reinforced its dedication with the launch of several new security solutions. The Cisco SecureX platform was introduced as a cloud-native security platform that integrated the company's extensive security portfolio, allowing organizations to have a unified view of their security postures. This move highlighted Cisco's focus on simplifying security management and improving incident response times, recognizing the growing need for comprehensive cybersecurity as remote work became prevalent.

Furthermore, 2020 saw advancements in Cisco's cloud strategy. The company focused on multi-cloud environments, allowing customers to manage their applications seamlessly across various platforms. The integration of technologies such as Application Centric Infrastructure (ACI) and Cisco Intersight provided improved automation, visibility, and control over network resources, essential for businesses navigating hybrid cloud setups.

Cisco also placed a strong emphasis on digital transformation, empowering organizations to transition to a more agile and responsive IT infrastructure. The company introduced innovative solutions to support enterprises in their journeys toward digital transformation, leveraging technologies such as artificial intelligence and machine learning to enhance network performance and operational efficiency.

In addition to its focus on technology and innovation, Cisco was recognized for its commitment to corporate social responsibility. The company actively engaged in initiatives aimed at bridging the digital divide, providing resources and support to underserved communities to promote access to technology and education.

Overall, 2020 was a pivotal year for Cisco Systems, characterized by resilience, innovation, and a profound understanding of the evolving needs of businesses worldwide. Through its comprehensive portfolio of solutions, Cisco not only adapted to the changing landscape but also paved the way for a more connected and secure future.