ronbo 0 Posted February 5, 2010 i recently installed an a few ip cameras, and to cut a long story short, none of them i could get a connection oni used my cat 5 tester and it showed no crossed wires shorts or opens., remade, remade and remade all the catV plugs. the only way we got it to work is by cutting off the ends of patch leads and jointing the ends together. can anyone explain why i had to do this- also i had brought differnt plugs thinking it was them? cheers Share this post Link to post Share on other sites
Soundy 1 Posted February 5, 2010 Are you using the proper wiring scheme? The right pairs have to be in the right positions or it won't work, and a cheap tester won't show the problem. You can't just line the pairs up end-to-end. Notice how the pairs used are 1/2 and 3/6. If you're using jacks, most should have the colors marked, but make sure to use the same variation (a or b) at both ends: blue and brown pairs remain the same; orange and green pairs change. Share this post Link to post Share on other sites
ronbo 0 Posted February 5, 2010 yes was just wiring end to end the same colours, should this be the way for all cat5 cableing or just Ip CCTV? Share this post Link to post Share on other sites
tomcctv 190 Posted February 5, 2010 Are you using the proper wiring scheme? The right pairs have to be in the right positions or it won't work, and a cheap tester won't show the problem. You can't just line the pairs up end-to-end. Notice how the pairs used are 1/2 and 3/6. If you're using jacks, most should have the colors marked, but make sure to use the same variation (a or b) at both ends: blue and brown pairs remain the same; orange and green pairs change. this is a standard crossover cable. only to be used when connecting to pc without going though network. Share this post Link to post Share on other sites
Soundy 1 Posted February 5, 2010 I know, I used that pic simply to show the difference between A and B schemes. ronbo: Unless you're really proficient with this, I'd recommend just using pre-made short patch cables and quick-attach keystone jacks - they're color-coded and a lot harder to screw up. Again, just make sure to use the same color scheme at both ends. You need to use the proper layout for ANY network cabling - IP cameras use the same system as your internet connection (IP = Internet Protocol). Share this post Link to post Share on other sites
