2013年1月31日 · Cat5 can definitely run PoE with no issues. I ran Cat5 in the army for years with PoE in bundles with no issues. When you talk about bundles, how much are we talking about? Is this Cat 5 STP or UTP? Also, Cat5 or Cat5e? Really, upgrading to Cat 6 wouldn't help much other than the obvious rubber core seperating the pairs. Are there already EMI issues? As far 110 blocks, I will leave someone ...

2010年10月15日 · hi everybody, can you tell me the max length of cat5 for PoE when I connect from switch to ip camera? Thanks and best regards,

2006年10月17日 · Binoy, Cat5 shouldn't be a problem with POE Power can be supplied in two ways over CAT cables: For Cisco ILP, inline power is provided over data pairs 2 and 3 (RJ-45 pins 1,2 and 3,6) at 48V DC. For IEEE 802.3af, power can be supplied in the same fashion (pins 1,2 and 3,6) or over pairs 1 and 4 (RJ-45 pins 4,5 and 7,8). HTH, rate if it does Narayan

2018年10月15日 · The cable category defines the high-frequency parameters of the cable (mostly attenuation and crosstalk). For PoE, the serial resistance of the cable matters which isn't defined by category. Good plenum cable grew somewhat thicker by custom from Cat-3 over Cat-5 to Cat-6 (A), patch cables vary greatly down to 30 AWG.

2008年4月14日 · Cisco Community Technology and Support Networking Routing Does PoE work over Cat5E?

2015年11月10日 · There are different PoE standards like 802.3af, 802.3at (PoE+) and 802.3bt (announced for 2017). In some articles I found the information that "CAT5e" is the minimum requirment for 802.3at.

2016年6月26日 · Connecting two devices to a single cable is non-standard, and you really, really don't want to go non-standard when it comes to power. It's also likely that the cameras use 1 Gbps ethernet, and that requires all four pairs in a Category-5e or above cable.

2007年10月15日 · I've got a new wiring project coming up shortly that may tax the limits of cat5e standards. I am having trouble locating documentation that says what a theoretical maximum distance for a 802.3af class 3 device will be. Has anyone run into problems with voltage loss over long distances? Will I be O...

Thanks for your answer. I started thinking at the solution in terms of the number and quality of connections. I ended up using a female 110 punch-down connector on one end and a male crimped connection on the other. Everything tested well and the POE device (in this case, a 5MP Camera) came right back up.

2015年6月9日 · So I never knew this till today but I thought you needed CAT5 for VoIP but this business is running VoIP on CAT3. Don't you need the extra wires for the voice, data and power?