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Pay for DC adaptors or POE

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  • 25-08-2014 9:50am
    #1
    elmsolutions
    Registered Users Posts: 3 ✭


    Hi,

    First off I am not very good at networking! Just trying to set up a small office and stumbling along trying to figure these things out.

    Basically I have bought a PBX with phones that have the option of PoE or a 5V DC adaptor. I thought the 24 port switch I had was PoE but it doesnt. So I am trying to decide which is cheaper/cost effective to upgrade the switches or just pay for the adaptors (about €10 per phone). We will have 14 phones in the office. There are 2 six desk hubs which will have to connect to a 8 port switch each, a reception desk which goes directly into the 24 port switch and a conference room which has the VOIP phone directly connected to the main 24 port switch.

    I have included a simple network diagram below.

    First question is if I was to upgrade the switches would they all have to be PoE or can the main 24 port switch be PoE with the smaller 8 port switches just being standard non PoE?
    Or can you do it visa versa; 8 port switches are PoE with the main 24 port switch not being PoE.

    The only problem with this option is the reception and conference room phone cant use PoE but that may be better. I havent bought the 2 smaller 8 port switches yet all I have is the 24 port main switch which is a Zyxel GS1100-24 (i cant post links as I am a "new user")

    I hope this makes sense, I probably explained it awfully! Thanks in advance for any help

    Dave


Comments

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    #2
    John_Mc
    Registered Users Posts: 2,790 ✭✭✭John_Mc


    He couldn’t upload images or links since he is a new user so asked me to do it. I have attached the image.

    Link to router: http://www.zyxel.com/products_services/gs1100_series.shtml?t=p


  • Options
    #3
    KrakityJones
    Registered Users Posts: 367 ✭✭KrakityJones


    Personally I'd go for the switch, those individual POE adaptors are messy, you need to supply power to them so you have your main ethernet cable going into it, another going out to the phone, plus power cable. They can clutter up a space pretty quick. Also most of those are only 10/100MB - you'll pick up a gigabit switch cheap enough at this stage. You also don't need everything to be POE, just where the phones are going to be connected to.

    Shouldn't cost much to swop your two 8 port Non-POE switches to 8 port POE (or 16 port to allow for expansion).

    You mind me asking why you have those 2 ports and not just bringing the phones directly back to your main cabinet?


  • Options
    #4
    elmsolutions
    Registered Users Posts: 3 ✭elmsolutions


    Thanks very much for that. The reason that we have two 6 desk "hubs" for want of a better word. We dont have enough wall rj45 sockets so we have a switch at each hub. Would we be better off paying to get enough ports mounted on the wall and paying for one big PoE switch as opposed to two smaller PoE switches?

    Thanks again


  • Options
    #5
    KrakityJones
    Registered Users Posts: 367 ✭✭KrakityJones


    Ah ok, nah it'll cost you to get an electrician in to wire in new sockets. The 2 smaller hubs won't affect performance once you've got gigabit ones, and every other one is gigabit also. Actually, I had to get a 48 port switch a few weeks back and it worked out cheaper getting two 24 port ones.

    Hp have a 2530 series 8 port poe (gigabit) for about 400 quid (where I get stuff, might get them cheaper elsewhere.)


  • Options
    #6
    elmsolutions
    Registered Users Posts: 3 ✭elmsolutions


    Yeah it seems that way, cheaper the bigger you go. The PoE seems to be such a premium. And the most frustrating is a lot of the 8 port switches have 4 PoE out of the 8 and we need 6 PoE. Thanks again for your help!


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  • Options
    #7
    KrakityJones
    Registered Users Posts: 367 ✭✭KrakityJones


    Have a look at this one : http://www.pcsystems.ie/hp-2530-8g-poe-switch?filter_name=POE%20Switch

    All 8 ports are full gigabit with POE, and as far as I can make out you can use the additional 2 ports as up/downlinks so your 8 are completely useable, not a bad switch for the price I reckon


  • Options
    #8
    BigEejit
    Registered Users Posts: 3,739 ✭✭✭BigEejit


    I guess that the OP has already bought the switches he needed by now, but ffs why not just try typing 8 port gigabit poe into amazon and find one for 95 quid .... plus maybe a tenner or fifteen quid for delivery to Ireland
    http://www.amazon.co.uk/Netgear-Gigabit-Smart-Switch-Fiber/dp/B003GOFIBS/ref=sr_1_3?ie=UTF8&qid=1410164865&sr=8-3&keywords=8+port+poe+gigabit+switch

    It is a 802.3af switch (means 13watts per port) with a bandwidth is 20Gb full duplex so every port can go full belt at the same time.


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