breff Posted December 2, 2008 Posted December 2, 2008 I seem to remember a 'rule of 5', ie only 5 devices in the chain, Redbull will probably be able to tell you more The opinions I express are mine and are usually correct! (Except when I'm wrong)(which I'm not)
energysolutions Posted December 2, 2008 Author Posted December 2, 2008 I seem to remember a 'rule of 5', ie only 5 devices in the chain, Redbull will probably be able to tell you more Does 5 in total mean: NVR > switch > switch > switch > device (camera)? PS - Thanks by the way!
james.wilson Posted December 2, 2008 Posted December 2, 2008 ill be honest i dont know of a hard limit. I seem to recall 305m but seen as a switch actually recreates the packets then i cant see a reason why you cant keep cascading switches. It wouldnt work with hubs mind. You could have a look for an old switch / hub with 10base5 on it and use thicknet. This has 500m section lengths and a 2500m max overall length. Slower and you need the right coax but might be an option. securitywarehouse Security Supplies from Security Warehouse Trade Members please contact us for your TSI vetted trade discount.
energysolutions Posted December 2, 2008 Author Posted December 2, 2008 ill be honest i dont know of a hard limit. I seem to recall 305m but seen as a switch actually recreates the packets then i cant see a reason why you cant keep cascading switches. It wouldnt work with hubs mind.You could have a look for an old switch / hub with 10base5 on it and use thicknet. This has 500m section lengths and a 2500m max overall length. Slower and you need the right coax but might be an option. I believe 305m would comfortably be enough range but may need 3/4 switches inbetween This is due to one of the cable runs being @ 150m but there is one oppertunity in the middle to add a switch and make two cable runs @ 75m each None of the cables will exceed 100m (indeed the extra switches will make the cable distances shorter) What about the NVR? Where can I find out more (If I see one it will probably make more sense to me) TIA
Doktor Jon Posted December 3, 2008 Posted December 3, 2008 I don't do recommendations on products or manufacturers, but if I did .... I thought this might be of interest even if it's not appropriate for the job in hand ... http://www.veracityuk.com/products/outreach/outreach.php If anybody's used it, I'd be interested to hear any comments
Alpat Systems Posted December 3, 2008 Posted December 3, 2008 Hi, Rather than doing the entire cable run in Cat5/6, and installing switches every 100m. (bear in mind what happens if the 100m runs fall where theres no power for the switch) Use fibre it will work out far cheaper. We'd always run fibre for this kind of distance. Switch wise, I'd recommend using HP Procurve products.
energysolutions Posted December 3, 2008 Author Posted December 3, 2008 Hi,Rather than doing the entire cable run in Cat5/6, and installing switches every 100m. (bear in mind what happens if the 100m runs fall where theres no power for the switch) Use fibre it will work out far cheaper. We'd always run fibre for this kind of distance. Switch wise, I'd recommend using HP Procurve products. Fair point although I have zero knowledge regarding fibre, I always assumed it was very specialist and difficult to manage/terminate? The switches positioned every 100m are there to enable additional cameras to be connected to those points, and also to extend the maximum distance available - sorry if I was not clear on this point. For this reason I believe the cat5/switch combination may be better suited - although it will entail more work/cost, had it been one long single run maybe fibre would be the answer Have you a link for HP Procurve? I don't do recommendations on products or manufacturers, but if I did .... I thought this might be of interest even if it's not appropriate for the job in hand ... http://www.veracityuk.com/products/outreach/outreach.php If anybody's used it, I'd be interested to hear any comments VERY interesting link - for that! I would ideally like this style of device with several ports at each location to serve the cameras en route Something of this nature probably does not exist as I imagine POE is limited to a small number of devices - I will fire Veracity an email out of curiousity though!
Alpat Systems Posted December 3, 2008 Posted December 3, 2008 Terminating fibre does require specialist terminating / testing equipment, so unless your going to do lots of fibre work its not worth the investment. You can buy pre-terminated fibre from a number of suppliers in various lengths / terminations. We did this before purchasing the equipment ourselves. The switches positioned every 100m are there to enable additional cameras to be connected to those points, and also to extend the maximum distance available - sorry if I was not clear on this point. .......sorry misunderstood originally. How many IP camera's will there be in total, are any external PTZ if so are these intended to be POE? Am i right in saying this is a dedicated IP CCTV, will it be connected to the computer LAN at all? HP Procurve..... http://h40060.www4.hp.com/procurve/uk/en/s...n_products.html
Russ99 Posted December 3, 2008 Posted December 3, 2008 I'd try speeking to Mayflex http://www.mayflex.com/ +44 (0)121 326 7557
energysolutions Posted December 3, 2008 Author Posted December 3, 2008 Terminating fibre does require specialist terminating / testing equipment, so unless your going to do lots of fibre work its not worth the investment.You can buy pre-terminated fibre from a number of suppliers in various lengths / terminations. We did this before purchasing the equipment ourselves. .......sorry misunderstood originally. How many IP camera's will there be in total, are any external PTZ if so are these intended to be POE? Am i right in saying this is a dedicated IP CCTV, will it be connected to the computer LAN at all? HP Procurve..... http://h40060.www4.hp.com/procurve/uk/en/s...n_products.html Yeah I suspected that Fibre may not be what I needed for this application although I will keep your info in mind for future reference Right now nothing is decieded 100% but the network will be cabled from scratch and is primarily to serve IP cameras although I suspect it may also be required to serve 1 or possibly 2 other computers Are you suggesting that 2 seperate networks (cctv LAN/computer LAN) may be advantageous? I`m guessing that there may be 4/5 IP cameras but again this is still undecieded. All will be external and at least one of those will be a PTZ - probably a good quality megapixel speed dome, and POE if this is viable I notice Axis products in your signature, whats your opinion on them? I'd try speeking to Mayflexhttp://www.mayflex.com/ +44 (0)121 326 7557 Excellent link dude, thanks!
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