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TRAU

Viewing 12 posts - 1 through 12 (of 12 total)
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  • #46592 Reply
    taha
    Guest

    hi any body tell me about TRAU

    #46593 Reply
    John
    Guest

    What would you like to know about TRAU

    #46594 Reply
    taha
    Guest

    how dis transcoder works?

    #46595 Reply
    emre
    Guest

    is trau placed on bsc side or bts side ? and what does it ?

    #46596 Reply
    taha
    Guest

    trau is placed on BTS side
    it is an important part of BTS,it carries out encoding and decoding and rate adaptation in data transmission

    #46597 Reply
    Pavel
    Guest

    Taha, TRAU never placed at BTS side.

    TRAU is an element placed between MSC and BSC, if you are talking about TRAnscoder Unit. TRAU is used for speech channel rate adaptation and submultiplexing between A-if and Ater-if.

    If you are talking about TRAnsmission Unit, it can be located sowhere else.

    #46598 Reply
    Telecom Engr
    Guest

    can any one tell me what is purpose of using transcoder?
    I mean i know it converts 16k to 64k and works as multilexer.
    is it the only functionality of transcoder?if it is then why we dont use multiplexer which will be more cheap then transcoder?
    Thanks in advance.

    #46599 Reply
    Bijoy
    Guest

    You r right.Its basic function is taht of a mux/demux.Besides this,it does Accoustic Echo Cancellation & Tandem free operation.

    #46600 Reply
    Has UK
    Guest

    yes the transcoder in GSM is hardware on the BSC. It allocates the EFR and halfrate channels to calls. If it goes down will affect drops on all cells on that BSC.

    #46601 Reply
    Pix
    Guest

    Has UK,

    The TC doesn’t allocate anything, it is not involved in choosing codec or allocating resources..

    If it goes down, all ongoing calls related to the faulty board are dropped. New calls will be handled by another board.

    #46602 Reply
    Has UK
    Guest

    Pix sorry i should have said it contains the EFR HR codec hardware, if it is faulty it could lead to drops on the BSC, but there are several EFh and HR modules to choose from so if one goes board goes faulty. The drops will average out.

    #46603 Reply
    ANIL
    Guest

    In GSM we know that speech coding is 13kbps but why we say that in TRAU there is 16k to 64 k conversion

Viewing 12 posts - 1 through 12 (of 12 total)
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