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Wireless Networks Thread, POE Power over Ethernet for wireless in Technical; I'm looking to replace our aging Wireless Access Points with new panels and it would be great if they used ...
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    u8dmtm's Avatar
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    POE Power over Ethernet for wireless

    I'm looking to replace our aging Wireless Access Points with new panels and it would be great if they used POE so that we didn't have to find places to stick the adapters etc.

    If we buy a POE enabled AP then is that all we need or do we need some sort of 'power transmitter' to actually send power over the cat5e cables?

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    TechMonkey's Avatar
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    Re: POE Power over Ethernet for wireless

    The switch that the AP is connected needs to be PoE compatible/enabled or you need to ge some little convertors. These plug between the switch and network cable and plug into power in your cabinet.

    I think thats all you need.

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    webman's Avatar
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    Re: POE Power over Ethernet for wireless


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    metalmonkey
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    Re: POE Power over Ethernet for wireless

    We use HP kit here, and used their Wireless stuff We also adopted POE in three locations. We have since removed all three and had electicians put some real power in.

    We found the HP WAP's would over heat and lock up very frequently. Almost daily. Letting them cool down for 10 minutes got them working again.

    Ours were installed by a professional company too, so it wasn't anything dodgy.

    It may be that we've just had a bad experience of it and others may love it.

    My advise it to try it in one location first for a trial period.

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    ChrisH's Avatar
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    Re: POE Power over Ethernet for wireless

    You need a POE switch or a POE adaptor. My Dlinks have an adaptor at the cabinet end theres a little box that the power plugs into then theres two sockets for you network lead:
    1 for data (attached to switch)
    1 for data and power (plugs into patch panel)

    At the AP there is another little box that takes the network feed in one end and splits the data and power out into a little power leat and a cat 5 lead.

    In the case of a POE enabled device I assume it plugs straight into the POE enabled switch and does it all for you or in the case of using an adaptor it doesnt need the other little box at the AP end. That is an assumption though and not fact

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    Geoff's Avatar
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    Re: POE Power over Ethernet for wireless

    Ideally you need a PoE enabled switch. This is hilariously expensive. You can also buy 'in-line' converters that will add PoE to a Ethernet cable though.

    Word of warning though. Kids + paper clips + PoE sockets = fire in switch cabinet.

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    ChrisH's Avatar
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    Re: POE Power over Ethernet for wireless

    I moved all my outlets up to the ceiling to keep them out of harms way.

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    Re: POE Power over Ethernet for wireless

    Yep just need PoE APs and a switch with PoE ports. Currently Use D-Link 3200APs and Netgear PoE switches. £200 ish will get you a 24p switch with 12 PoE enabled ports. They do a 48p with 24 PoE ports but not sure the cost on that.

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    Sylv3r's Avatar
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    Re: POE Power over Ethernet for wireless

    We use the HP Wireless gear also with the PoE boxes. No problems at all in the 8 or 9 months of use. Let me know if you want the details of the hardware we are using.

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    GrumbleDook's Avatar
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    Re: POE Power over Ethernet for wireless

    Cisco Aironets (1231) here, all running with power injectors for PoE.

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    Re: POE Power over Ethernet for wireless

    We have a couple of 3COM 8250s which are POE powered and come with POE injectors. We also have a lot of cheap and cheerful Linksys WAP54Gs and WAPPOEs. The linksys stuff ain't brilliant but it works reasonably well. Certainly a damn site better than the Netgear and DLink dross we were using before.

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    Re: POE Power over Ethernet for wireless

    Had the same setup as Tony at the last place, 10 aironet 1231s with PoE injectors, i made sure the cables were colour coded (green in the cab) so i knew they were running PoE, all sockets (and APs for that matter) were mounted out of reach of the students.

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    Re: POE Power over Ethernet for wireless

    We're going over to a centrally managed (3Com) wireless network in the summer.
    There will be PoE injectors in the cabs - cheaper than PoE switches throughout school.
    Each WAP will be high on wall and in a plastic enclosure to prevent damage or theft.

    I like the idea of colour coding PoE devices with CAT5 cables... should have thought of that myself...

    We're going for a dual band system that's also going to end up handling VoIP so that the IT tech staff can be contacted anywhere in school.

    On a vaguely related note, does anyone know if there's anything like a wireless tannoy system - it's just that we need something that can be used throughout school without having to run extra cabling - we can't use the CAT5 cabling for a tannoy type system as we have a fibre backbone?
    Really something like VoIP speakers with a VoIP microphone unit in reception
    Or even something that will plug into the network that doesn't rely on being wireles - just IP based?

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    john's Avatar
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    Re: POE Power over Ethernet for wireless

    Sounds a nice system, i love coloured patch leads you cannot beat them!

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    webman's Avatar
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    Re: POE Power over Ethernet for wireless

    Videk do a large range of short, coloured patch cables if anyone's interested

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