Hello,

On Tue, 10 Mar 2009 15:24:00 +0100, "Klaus-Peter Junghanns" kpj@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