Re: BUGs into libax25

[Ralf Baechle DL5RB <ralf@xxxxxxxxxxxxxx>]

On Sun, Jun 01, 2008 at 10:14:54PM -0400, Mike McCarthy, W1NR wrote:

> As I recall, there is a limit to the size of a callsign in the AX.25 
> protocol specification.  Will changing it create an incompatibility with 
> standard TNC protocol stacks?

Afaik the currently only user of 6-letter callsigns aside of special
event stations are Australien foundation license which look like VK3FABC
so 4-letter suffix and those are not permitted to use packet radio anyway.
I was wondering if Swaziland which only has a half-series assignment is
possibly using 3+3 calls.

Anyway, the maximum callsign length in the AX.25 spec is 6 characters and
(I looked into that ...) there is no way of extending that without causing
large scale software breakage :-(  It's almost like retrofitting 128-bit
addresses into IPv4 - it took a new protocol.

  Ralf
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