[ax25-layer2] AX.25 over raw serial interface

[Glenn Thomas]

Can -

You are saying that you are not using a TNC to do packet formatting 
and that complete AX.25 packets are being generated, CRC and all, in 
the computer. I'm also assuming that a second computer is to receive 
these AX.25 packets, CRC and all, and make sense of them.

If you already have software that does these things, all you need 
between the two computers is a null modem cable.

In my ignorance, I'm not aware of any software that actually does 
these things as every outboard TNC I'm aware of will format the 
packets. The KISS protocol has the computer doing much of the 
formatting but the CRC is still computed/checked by the TNC. I 
believe you are not using any TNC at all. Is this true?

The only other approach I can think of is to get a more recent packet 
program that does complete packet formatting, including CRC, and then 
uses the computers sound card as a modem. With a couple of computers 
thus equipped, you need only analog cables to interconnect the two sound cards.

All of this seems simple and straightforward to me. What am I missing?

73 de Glenn wb6w




At 01:43 PM 7/29/2009, Can Yuce wrote:
>Ok, sorry there was a misunderstanding in here;
>
> > Originally, it looked as though you are attempting to send AX.25
> > frames, generated by the host PC, over a modem just smart enough to
> > modulate 1s and 0s.
>
>Yes, this is the situation, that's all.
>
>Thanks.
>
>--
>Can Yuce