Tài liệu Homeland Security On a Budget pptx

Video Surveillance - Cost vs. Coverage In the post 9/11/01 world, the role of video surveillance systems has shifted from protecting property to protecting lives. Increased security measures and extended surveillance areas are now necessary to provide optimum public safety. These new requirements demand a higher quality and a more extensive delivery of video images. Digital video surveillance systems answer this demand for higher quality, providing many advantages over older, analog video technologies. For example, law enforcement and civilian authorities can employ digital video for face recognition and video indexing for increased civilian protection. In public areas requiring video surveillance, a digital video system offers superior control functionality with remotely controlled pan, tilt, and zoom movement to cover a large area. The expense, however, of purchasing a full-coverage digital video surveillance system can affect a deployment decision. The cost to purchase both the digital video surveillance system as well as to upgrade the network infrastructure in all necessary areas can be prohibitive. Municipalities and other organizations often decide not to place cameras in critical areas, such as public parks, parking lots, and in older buildings due to the costs of extending the network. This presents potential security concerns, and leaves the public in a potentially vulnerable position. Extending Your Reach, Without Breaking the Bank Most digital surveillance systems require the build-out of complex fiber networks to carry the video signal. These systems can be expensive, and the required fiber build can significantly increase the cost to extend the network. Luckily there is an easier way to get the coverage you need at a price you can afford. By maximizing the existing copper infrastructure, ADC’s Megabit Modem ® products can extend surveillance systems reliably and affordably. Megabit Modems deliver the video captured by digital cameras to decoders located at a network interface location, thereby providing video monitoring that is both instantaneous and very high quality. In addition, the resulting network can extend from three to five miles beyond the reach of fiber optic networks, without the additional investment. Megabit Modem products transmit the MPEG-2 video at speeds up to 7.5 Mbps over a traditional copper pair. Since many cities and campus environments have an existing copper plant or are able to lease copper wire pairs from the Local Exchange Carrier, this provides a simple and economical way to extend the reach of video surveillance. The availability of copper pairs combined with ADC’s Megabit Modem technology allows cities and other organizations to extend network access to remote cameras without an expensive infrastructure upgrade. This cost-effective solution improves public safety and protects the most valuable property of all, lives. Homeland Security On a Budget Digital Video Surveillance: Solving the Access Issue application note ADC Telecommunications, Inc., P.O. Box 1101, Minneapolis, Minnesota USA 55440-1101 Specifications published here are current as of the date of publication of this document. Because we are continuously improving our products, ADC reserves the right to change specifications without prior notice. At any time, you may verify product specifications by contacting our headquarters office in Minneapolis. ADC Telecommunications, Inc. views its patent portfolio as an important corporate asset and vigorously enforces its patents. Products or features contained herein may be covered by one or more U.S. or foreign patents. 1249559 11/02 Original © 2002 ADC Telecommunications, Inc. All Rights Reserved An Equal Opportunity Employer Web Site: www.adc.com From North America, Call Toll Free: 1-800-366-3891 • Outside of North America: +1-952-938-8080 Fax: +1-952-946-3292 For a listing of ADC's global sales office locations, please refer to our web site. ADC Technology Megabit Modem products support the unique requirements of digital video systems including: • Reversed Downstream 1 – Transmits the digital video signal, using the higher-bandwidth ADSL signal of up to 7.5 Mbps, from the remote location of the digital camera over one existing copper wire pair to the video network. • Supports Pan, Tilt, & Zoom – Uses the remaining bandwidth ADSL signal (up to 900 kbps) to control the remote operation and monitoring of the camera and encoder through the network. • Supports MPEG-2 – ADC’s Megabit Modems interface with the 10/100Base-T output on an MPEG-2 encoder and decoder. Flexible Solutions ADC has several back-to-back modem solutions, including the following, to fit your needs: Megabit Modem 310/320 Megabit Modem 410/420 Maximum Upstream Rate 928 kbps 928 kbps Maximum Downstream Rate 7.040 Mbps 7.552 Mbps Bridging/Routing Bridging Only Bridging and Routing Management Proprietary management SNMP 1 ADC does not recommend that two high-speed downstream ADSL signals travel in opposite directions within the same bundle. When leasing copper wires from a phone carrier, confer with the carrier’s plant engineering staff about this application to obtain a suitable copper pair. Camera MPEG-2 Encoder 10BASE-T / 100BASE-T Interface ADC Megabit Modem Up to 7.5 Mbps MPEG-2 Decoder 10BASE-T / 100BASE-T Interface ADC Megabit Modem Up to 900 Kbps Existing Copper Pair ATM / IP / T1 / E1 Network . lives. Homeland Security On a Budget Digital Video Surveillance: Solving the Access Issue application note ADC Telecommunications, Inc., P.O. Box 1101, Minneapolis,. cameras to decoders located at a network interface location, thereby providing video monitoring that is both instantaneous and very high quality. In addition, the