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Chapter 1: Video Surveillance Overview
Video surveillance has been a key component of many organizations' safety and security groups
for decades. As an application, video surveillance has demonstrated its value and benefits
countless times by:
●
Providing real-time monitoring of a facility's environment, people, and assets.
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Recording the movements inside and outside a facility's environment for delayed viewing.
Many traditional video surveillance deployments are purely analog and have not yet been able to
benefit from a converged network approach. Rather than looking at a massive forklift upgrade, a
Cisco hybrid deployment provides an interim solution that allows customers to implement a staged
migration to a fully converged IP-based solution.
®
Cisco
video surveillance products can integrate with existing closed-circuit television (CCTV)
systems, including matrix switches, keyboard controllers, and displays to enable new digital
recording capabilities. A Cisco hybrid solution allows the user interface to remain unchanged and
provides an easy migration path to a Cisco Virtual Matrix Switch solution, where the IP network
infrastructure provides a dynamic transport of video streams.
Note:
The Video Surveillance Solutions Reference Network Guide provides detailed information
about the Cisco Virtual Matrix Switch design. This document is available here
http://www.cisco.com/go/srnd.
Video Surveillance Components
A typical analog video surveillance system includes the basic system components that are shown
in Figure 1. In this system, video streams are monitored concurrently by using a matrix switch as an
aggregation device. This approach allows video streams from different cameras to be switched to
analog CCTV monitors by using special-purpose keyboard controls. Analog cameras, either fixed
or pan-tilt-zoom (PTZ), typically are connected to the matrix switch by using coaxial cables for
video transmission and serial cables for PTZ command and control.
Figure 1.
Typical Analog Video Surveillance System
Design Guide
1-1
Page I
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