logitronics 0 Posted January 13, 2014 I need to design a functional IP CCTV system for a high school. This system will cover eight buildings. Six buildings are very close (about 7meters apart), two are farther (about 120meters from the six clusters). We intend to install about 100 indoor cameras for classrooms, labs, library and staff rooms,. and about 20 outdoor types (static and PTZ). There will be 4 client systems. I need help as follows: 1. Server room design showing total no. of NVRs required and cable connections to patch panels and swithches and routers. 2. If we are not using any analog camera, is there any need for a decoder? 3. The school intends to have an optic fibre backbone, will the CCTV network not consume too much optic fibre bandwidth? If no, how can one link a CAT5E network to the optic backbone? Is it not advisable for the CCTV network to be a stand alone? Looking forward to a quick reply Share this post Link to post Share on other sites
Q2U 0 Posted January 13, 2014 "Quick," relative to what. Share this post Link to post Share on other sites
varascope 0 Posted January 13, 2014 Quick questions: What MP rating? What bitrate are our planning? What frame rate are you planning on recording at? How many days of storage? You mentioned PTZ's what are the specs on those? Six buildings but how many cameras per building? Do you have a breakdown? Decoder? Encoder convert to IP, Decoder is taking IP and converting to HDMI, VGA etc. The IP stream is already encoded and stored on the NVR. Do you need spot monitors that need a decoding engine? Where are you deriving "Decoder" from? Was it in an RFP? Fiber optic converts to ethernet. What type of transceivers are you planning on using? Gigabit? 10G? What POE switches are you planning and most importantly IS THIS an independent network or shared? For this size it should be on it's own. Without exact measurements, maps and other information any response will be vague. Sounds like you need this professionally engineered due the magnitude and that is usually a charged service. Beware of people claiming they can do it. I can write a book on failed IP installations. There are people confident in networking but IP video is a different animal if you want it done correctly. Another issue, from experience with school systems, anything less than 15fps will cause evidence issues. A fight breaks out and your at 7fps, they won't like it. 21-24fps is recommended for schools and high value installations. Many people argue the frame rate issue because they think IP is the end all be all and can't admit it is not for everyone. There are reasons casinos, high security government facilities, nuclear and more use 30fps. You may want an alternative design using HD-SDI and you may find the cost is significantly less than IP, better frame rate and just as clear as IP. Remember think as a SECURITY Professional, not an IT Admin. Share this post Link to post Share on other sites
ChrisP 0 Posted January 14, 2014 If your client can afford it, use two American Dynamics Video Edge servers. They are Linus based and are incredibly stable. If you use AD ip cameras, there is no license cost. Use POE switches to power up the cameras. Thats it Share this post Link to post Share on other sites
MR2 0 Posted January 20, 2014 You may want an alternative design using HD-SDI and you may find the cost is significantly less than IP, better frame rate and just as clear as IP. Really? you can get HD-SDI converters to throw them onto his fibre backbone? how much does each of these add to the price? Share this post Link to post Share on other sites
