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Fundamentals of BTS site

Viewing 6 posts - 1 through 6 (of 6 total)
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  • #53850 Reply
    kamal
    Guest

    I wanna know d functioning of BOI,FXC-RRi & BB2F.

    Also say something about “throwing an E1”..

    What is FIU? And what is d purpose for the same?

    What is 2M interface?

    #53851 Reply
    finn
    Guest

    throwing? maybe through an E1? please check other threads for E1/2M explanations. FIUs are for Nokia PDH,modem..BOI is like DXU for Ericsson? am i right?

    #53852 Reply
    deepak pardeshi
    Guest

    hi,
    i am deepak
    plz tell me the Fundamentals of BTS site

    #53853 Reply
    finn
    Guest

    deepak,

    that is one of the most common question.. BTS site of what? CDMA? GSM? WCDMA? let’s try one of the most common, GSM.. or 2G.. a BTS is usually installed either 900 or 1800 or 1900 or some 800 i think in the US? its powered up by a rectifier or a battery backup system plus 220VAC and feeder cables connected to combiners of the BTS going to the antenna.. either directional or omni depending on the design by RF engineers depending also on thedemand in the area. like if a motorway, usually back to back panel antenna.. in country sites omni will do.. in in-building solutions or IBS they are using DAS or distributed antenna system.. the traffic is transported via E1 (PCM) from PDH transmission system.. sometimes groomed from ericsson’s DXX.. i dunno about other vendor… then from PDH to SDH hub.. then to the BSC.. others please add

    #53854 Reply
    FLM member
    Guest

    The aim is to carry the traffic to BSC through other BTS sites which can be configured in diferent kinds of topologies.
    They can be chain, star, lop,mesh.
    I think the most common is chain as the most reliable topology is loop.
    other please add.

    #53855 Reply
    finn
    Guest

    yeah loop… on an SDH network.. hub sites with add-drop multiplexers.. from STM-1 to STM-16.. sub-hub sites uses STM-1 then backhaul access with PDH links and sometimes to make useful of the timeslots, they use DXX to do that..

Viewing 6 posts - 1 through 6 (of 6 total)
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