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Dieter Spaar spaar at mirider.augusta.deHello, On Tue, 10 Mar 2009 15:24:00 +0100, "Klaus-Peter Junghanns" <kpj at junghanns.net> wrote: > > What i am wondering about is: > - which ETSI standard describs layer 2 for GSM abis? As far as I am aware, its LAPD as specified by ITU Q.920 and Q.921 (very similar if not equal to what is used in the "D"-channel of ISDN). Best regards, Dieter -- Dieter Spaar, Germany spaar at mirider.augusta.de