[OT] aal5 pdu CRC

From: Jose M Rodriguez (josemi_at_freebsd.jazztel.es)
Date: 01/27/05

  • Next message: Harti Brandt: "Re: [OT] aal5 pdu CRC" 
    To: net@freebsd.org
Date: Thu, 27 Jan 2005 16:00:42 +0100

    Hi,

    get some free time to work in uadsl, but have a problem. Hope someone that
    can read ITU I.363 can answer this.

    Every usb adsl modem implementation I see doesn't obey aal5 pdu encoding
    standards, which requires that the PDU trailer come at the begin of a fresh
    cell.

    So, I think that the modem must rework this and generate two cells on the
    wire. Due how this modems works, I doubt that the modem recalculate PDU CRC
    itself, So...

    Can someone confir if the CRC covers the PAD? I'm begin to think that the CRC
    only covers the playload and the pdu-trailer. 

    --
  josemi
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  • Next message: Harti Brandt: "Re: [OT] aal5 pdu CRC"

    Relevant Pages

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