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  1. #1
    Registered User
    Join Date
    Nov 2004

    Nokia's packing format for GSM

    I'm converting PCM audio to GSM by using a CMMFCodec.
    I've found that the type of GSM I get, even being a GSM 6.10, is in the Microsoft packed format with two frames packed in 65 bytes without padding and with particular bit order.
    This is called MS-GSM (used in Windows but not in many non MS progs) and different from the more wide spread version:

    I've not found documentation stating anything about this apart from that what I get is "GSM 6.10" but as we see this is not exactly true, it's (MS-)GSM 6.10 .

    There could be a parameter or something to have the encoder produce the non-MS version?


  2. #2
    Registered User
    Join Date
    Mar 2003

    Re: Nokia's packing format for GSM

    I have the same problem... It seems Nokia uses the MS GSM format...
    Do you have any answer on this issue?

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