Re: Antwort: IP over DVB-RCS

[Lloyd Wood <l.wood@eim.surrey.ac.uk>]

On Wed, 3 Apr 2002 Torsten.Jaekel@FTK.rohde-schwarz.com wrote:

> I am not (yet) so familiar with RCS but a bit with ATM.
> There are different ATM Adaption Layers (AAL). AAL5 (using jumbo frames) has
> just a 32 bit CRC, no approaches for data integrity (issue of
> higher layers).

??? that's what the 32-bit CRC is for...

L.

> But if you use AAL1 (I do not know if intended for RCS, perhaps because this is
> also used for MPEG-2 via ATM),
> there is an ATM based FEC algorythm (Reed Solomon), in addition to MPEG-2 FEC.
>
> Is this similar to CableModems (DOCSIS) where the Uplink is also ATM-like ?

<L.Wood@surrey.ac.uk>PGP<http://www.ee.surrey.ac.uk/Personal/L.Wood/>