Joseygnacyo

AX.25 OSI level 3

AX.25 does not specify a level 3 protocol. A number of AX.25 specific layer 3 protocols existed around 1990-1995, like NET/ROM, TheNet etc, but they are not used nowdays. Also TCP/IP was commonly used above AX.25 using UI frames. It was the AMPRnet or 44-net. All these are now ancient history, of course. SV1XV (talk) 15:55, 27 August 2011 (UTC)

What you say is correct, AX.25 is basically a level 2 protocol. Of course real world networking protocols usually don't align exactly with the bureaucratic OSI model. SV1XV (talk) 17:31, 27 August 2011 (UTC)