[Xastir] Change to RELAY digipeat function

[Bennett, Joe]

James,

The path information is not completely an ACII
function. In the packet standard there are "H" and "C"
bits that must be toggled depending on what action has
been taken on the packet. Therefore you need to have
bit level access to the packet in which a TNC in
terminal mode (Serial TNC) cannot handle. The TNC can
do this because what it receives over the air is at
the bit level. What you see via terminal mode is the
ASCII version. Therefore those types of interfaces
trying to handle an ACSII packet via an off board
means cannot support digipeating. KISS on the other
hand, is a good example of a format that can
participate in the digipeating function. You have the
full ability to manipulate the source and destination
fields as you need. 

The TAPR website has the AX.25 standard. You may want
to peruse it to understand how the packets need to be
manipulated in different situations. I have reffered
to it many times in playing around with PIC type
applications in which I used the KISS protocol to talk
to a TNC.


-Joe
 
--- James Ewen <jewen at shaw.ca> wrote:
> > The user has to hit that togglebutton on the
> particular interface.
> > Only some types of interfaces are capable of
> relay/wide1-1
> > digipeating.
> 
> Aha, I found the magic word, "particular"!
> 
> I finally found that silly RELAY toggle button... I
> can't figure out how 
> many times I've wandered through every menu I could
> find looking for it. I 
> never though to look in the interface dialogue!
> 
> So how come only certain types of TNC interfaces
> have the capability of 
> enabling RELAY? I would think that any RF interface
> would be a candidate.
> 
> James
> 
> BTW, my previous nasty language (#^&%#@) was only
> mock nasty language. A 
> little tongue-in-cheek humour over my inability to
> find a silly little 
> button to press. 
> 
> 
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