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Enhanced Full rate (EFR)

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  • #46634

    Please could anyone explain me how EFR works and what it can improve in the BSC.



    hello m.shan,

    from wikipedia:

    “Enhanced Full Rate or EFR or GSM-EFR is a speech coding standard that was developed in order to improve the quite poor quality of GSM-Full Rate (FR) codec. Working at 12.2 kbit/s the EFR provides wirelike quality in any noise free and background noise conditions. The EFR 12.2 kbit/s speech coding standard is compatible with the highest AMR mode”

    There is no impact on your BSC, but maybe you ought to check that your Transcoder (TC) is compatible with this voice codec. However i believe it is a standard feature for a TC to support EFR.

    The only benefit is to improve the voice quality as compare to the basic Full Rate codec. Subscribers will benefit from hearing a better voice quality.


    Many thanks ppix for your help, but another question please.

    do you know the ericsson BSS parameters for this feature?



    hello m. shan,

    no i d’ont know the ericsson parameter, but if i compare to the alcatel one it should simply be a switch : “enable EFR” = enable / disable

    that’s from the BSS point of view. from TC, there might be additional settings.

    you should ask your ericsson support directly.


    Many thanks.

Viewing 5 posts - 1 through 5 (of 5 total)
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