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Wireless Networks Thread, Networking between 2 buildings? in Technical; Fibre. But is there a route between the two buildings already in place. I had simular at a school and ...
  1. #16

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    Re: Networking between 2 buildings?

    Fibre.

    But is there a route between the two buildings already in place. I had simular at a school and used an existing telecoms trench.

  2. #17

    plexer's Avatar
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    Re: Networking between 2 buildings?

    Don't even think about wireless unless you want more headaches to contend with.

    The most reliable solution is to install a fibre between them.

    You could look into a laser system. Best bet is to get your local cabling firm to come and do a survey for you and make some recommendations based on the buidlings.

    @Disease: Well using copper between the 2 buildings would create a ground loop probably as has allready been said. But the less copper cabling you have running external the less chance of lightning strike etc... I know BT run copper all over the world but that their choice and telephone provision is different to data provision.

    Ben

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    Re: Networking between 2 buildings?

    So when would you use External Cat5E then or i that a product on the market that is totally useless?

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    Re: Networking between 2 buildings?

    when you had to run cable from one part of the same building externally. eg, from one floor to another.

  5. #20
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    Re: Networking between 2 buildings?

    I cant find anything on google about external catv specifically causing ground loops. Have you got some links regarding ground loops? Would like to know a bit more about them and ext catv

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    Re: Networking between 2 buildings?

    Another vote for fibre

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    Re: Networking between 2 buildings?

    * Attaches some CAT5 cable to end of Harpoon Gun, takes Aim and FIRE! *

  8. #23

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    Re: Networking between 2 buildings?

    If you have a switch in one building plugged into the mains and a switch in another connected to the mains joined by copper cable you have the possibility of a ground loop due to the buildings different earthing points.

    Joining the 2 switches with fibre gets rid of this effect due to the nature of a fibre optic.

    Ben

  9. #24

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    Re: Networking between 2 buildings?

    I suppose that makes sense.

    So...assuming that budgets were tight, and wireless wasnt an option. Is there no alternative whatsoever to fibre?

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    Re: Networking between 2 buildings?

    External CatV , laid in a duct, with polyethlene insulation and polyethylene sheathing wouldnt work for example?

  12. #27
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    Re: Networking between 2 buildings?

    Would this from those links not apply in the above case?

    "10Baset-T Ethernet used twisted pair wiring and RJ-45 connectors. The wiring is completely transformer isolated in network card and HUB end. 10Base-T network using unshielded twisted pair wiring does not cause any ground loop problems"

  13. #28

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    Re: Networking between 2 buildings?

    we are just joining our newly built sports hall up to the network using a wireless directional link back to the main building rooftop where we have a feed down from the rooftop antenna to our first floor comms room which then cat5s from our access point (proxim) to a gig managed switch which then allows access to the network. Price is approx 2k but you could get your ISP involved which might get it cheaper for you if you are on good terms.

  14. #29

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    Re: Networking between 2 buildings?

    Apparently yes according to that document structured cabling doesn't create ground loops due to the isolation of the signal.

    Still wouldn't use copper externally personally.

    What about a laser link?

    Ben

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    Re: Networking between 2 buildings?

    I still don't understand why you have an aversion to using copper.

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