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y we hv only 8 ts/trx.

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  • #53994 Reply
    prasun
    Guest

    hi pix sir,

    i hv sm querry–
    1. y we hv only 8 ts/trx.
    2. y we r not able to make 32 transcoder in 1 bsc.
    3. y v can not make more then no. 16 no.of signalling in 1 bsc.

    #53995 Reply
    pix
    Guest

    1/ that’s 3GPP specs.
    2/ 32 transcoders ?? what do you mean ?
    3/ i don’t understand

    when i started to answer, i thought i’d be able to answer more than 50%, but i understand only 33% of the questions. Let’s look at the bright side: I answered 100% of the questions that I understood 😀

    #53996 Reply
    PRASOON
    Guest

    GM PIX SIR,
    IT MEANS THAT THEIR IS NO LOGIC FOR THIS,OR NO CALCULATION.

    SECOND THING SIR,
    WE HAVE MAX NB OF TRANSCODER IS 32 IN 1 BSC,NOT MORE THEN THAT Y?

    SIR THIS QUERRY I FACED IN 1 INTERVIEW.

    #53997 Reply
    pix
    Guest

    interviewers ask the weirdest questions, really.

    and there is no need to write in capital letters…

    1/ there is certainly a good reason for it… let’s see:
    a speech frame contains speech for 20ms.
    and with GSM codecs and protection, 20ms of speech are coded in 456 bits.
    so you need a net bit rate of 456 bits / 20ms..
    I’ll stop here because i don’t see how you can link that to 8TS/TRX… 🙂

    2/ there is no transcoder in the BSC. the transcoder is a dedicated equipment, outside the BSC. And one BSC is connected to one transcoder via Ater interfaces.

    Regards
    Pix

    #53998 Reply
    prasoon
    Guest

    thanx sir,

    for ur ans.

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