From: "Robin Gilks" <robin@gilks.org>
To: linux-hams@vger.kernel.org
Subject: Re: Packet at the physical level
Date: Fri, 19 Sep 2003 10:37:40 +1200 (NZST) [thread overview]
Message-ID: <53174.202.37.96.11.1063924660.squirrel@server> (raw)
In-Reply-To: <E1A04H7-0008Ka-00@yagi.h-net.msu.edu>
Greetings
To get a view of the physical layer just above the tones themselves, take
a look at the bit-bashing in the TVIPUG (Thames Valley IP User Group) 9k6
modem. This does all the NRZ/NRZI conversion, the CRC generation and
checking, the bit stuffing and stripping on a bit level (makes it a bit
clearer than byte level I think!!). Its also independent of the speed and
avoids the pitfall of thinking all packet being at 1200bps :-))
http://www.tvipug.org/download/ipri-1.00.tar.gz
> I'm trying to find out what happens at the physical level with
> Ax25 packet. I've tried looking at the source code but either I'm
> looking in the wrong place, or I don't understand.
>
--
Robin Gilks
Internet: robin@gilks.org http://www.gilks.org
Tel: (+64) (3) 357 9383
next prev parent reply other threads:[~2003-09-18 22:37 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-09-18 18:48 Packet at the physical level Mike Davies
2003-09-18 19:05 ` Bob Nielsen
2003-09-18 19:17 ` Dennis Boone
2003-09-18 22:37 ` Robin Gilks [this message]
2003-09-19 7:10 ` Mike Davies
2003-09-19 9:25 ` Richard Stearn
2003-09-19 14:19 ` w9ya
2003-09-18 19:08 ` Jeroen Vreeken
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=53174.202.37.96.11.1063924660.squirrel@server \
--to=robin@gilks.org \
--cc=linux-hams@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.