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PA2AGA > TCPDIG 30.08.96 04:50l 222 Lines 7009 Bytes #-10903 (0) @ EU
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Subj: TCP-Group Digest 96/174E
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Message-Id: <tcp_96_174E>
From: pa2aga
To: tcp_broadcast@pa2aga-1
Subject: TCP-Group Digest 96/174E
X-BBS-Msg-Type: B
On top of that, they will charge some $200/month for unlimited time or
something like $30/month + $.10/min. In other words, ISDN is not a
viable option at my location. And they have absolutely no plans to add
it any time soon.
That is why I would like to get a decent high-speed network up in
Central Florida. I know some people who could tie my network into their
T1s, but I have to have the network first.
Regards,
Brian
--
Brian Coggins / Leesburg, FL / KC4LLD / PGP 2.62 public key available
bc@digital.net, kc4lld@amsat.org / Using Win95 and Netscape 3.0b5
------------------------------
Date: Tue, 27 Aug 1996 14:26:11 -0700 (PDT)
From: Phil Karn <karn@qualcomm.com>
Subject: PPP/SLIP in connected AX25?
>TNCs in conventional (not KISS) mode will transmit in three cases: (1) when a
>particular character, usually CR, is sent, (2) when a sufficient amount of
>unsent data has accumulated to approach PACLEN, and (3) when the CPACTIME
timer
>expires after a period of idleness. However, most TNCs set CPACTIME to zero
by
>default, disabling this feature.
This seems about right -- these features were stolen from X.25 PADs.
To handle SLIP/PPP you'd want a combination of (2) and (3). (1) by itself
is no good even if you could trigger off the C0 or 7E flag, as there's
one on the front of the frame as well as the end.
Phil
------------------------------
Date: Tue, 27 Aug 1996 11:20:11 -0700
From: brian@nothing.UCSD.EDU (Brian Kantor)
Subject: PPP/SLIP in connected AX25?
I've long ragged on Phil that the simple way to do ham networking was
to use SLIP (now I'd advise PPP) and just use TNCs in nailed-up
connected transparent mode - in other words, the 'dumb modem' mode.
The TNC forms a transparent reliable sequenced link, and you don't have
to pay any attention to it after that. As long as you're connecting to
a regional router that can deal with lots of connections, there's no
reason to ever knock the connection down! Just turn off keepalives and
turn on autoreconnect, and there you have it.
This would work fine if you have only one RF connection open at a time,
as I suspect a lot of people do from their home stations. I don't see
why Winsock or other stuff can't just pretend that the TNC is a modem
and even do a 'dial script' to make the initial AX.25 connection to the
router, just like they dial a modem to connect to their ISP.
A lot of TNCs support multiple connections even in transparent modes,
or 'host mode' or the like. Seems to me that a simple driver could
manage these connections on a LRU-reuse basis.
I'm advocating (well, suggesting) these kludges just for people who only
have one machine and use it for lots of different things, part time for
hamming. I would hope enthusiasts will dedicate a system to ham radio and
run more appropriate stuff on it.
- Brian
------------------------------
Date: Wed, 28 Aug 1996 09:04:18 +1000
From: Terry Dawson <terry@perf.no.itg.telstra.com.au>
Subject: PPP/SLIP in connected AX25?
Phil Karn wrote:
> On the other hand, TCP works hard to send a few max-sized packets
> instead of lots of small packets, so the gain for a single active TCP
> connection may not be quite as great as you think it is. The payoff
> would be greater between two routers that carry many simultaneously
> active TCP connections.
I was definitely thinking of multiple simultaneous sessions being
where the gain would be. I hadn't considered though just how significant
that could be on a half duplex inter router link though.
Terry
]
------------------------------
Date: Wed, 28 Aug 1996 13:41:36 +1000 (EST)
From: Carl Makin <cmakin@nla.gov.au>
Subject: PPP/SLIP in connected AX25?
On Tue, 27 Aug 1996, Phil Karn wrote:
> Internet access coming to San Diego by the end of the year. They're
> tossing around prices like $19.95 or $29.95/mo flat rate, modem
> included.
<sigh>
Here the major local phone provider is talking about using automated
sensing to detect modem and fax calls so they can introduct timed local
calls for them. The argument is that "modem" and fax users are tying up
the system for the honest folk and so should be charged more. :-(
Here is the Telstra schedule of fees which can also be found at;
<http://www.telstra.net.au/pricelist.html>
B. High Speed Access
Once-only Installation Charge
64Kbps 128Kbps 256Kbps and Above Frame Relay
$2,000 $4,000 $6,000 $6,000
Monthly Access Charges
For accesses from 64Kbps to 1024kbps, the following prices apply. Please
note that these prices relate to received data only, based on utilisation
calculated as described above: (ie average monthly loading)
Link Loading
64Kbps 128Kbps 256Kbps 512Kbps 1024Kbps
0% to 40% $1,250 $2,100 $3,750 $7,000 $13,400
Above 40% $2,500 $4,500 $8,750 $18,700 $35,600
Nice prices huh.
Carl.
--
Carl Makin (VK1KCM) <http://email.nla.gov.au/~cmakin/>
C.Makin@nla.gov.au 'Work +61 6 262 1576' "Speaking for myself only!"
'If you want to make your spouse pay attention to what you say...
Talk in your sleep!'
------------------------------
Date: Tue, 27 Aug 1996 23:48:40 -0600
From: "Ed Maling" <n7mlr@easilink.com>
Subject: PPP/SLIP in connected AX25?
>>I'd like to know what I could use to get me online at 56Kbps for only
$500.
>A Motorola BitSurfer and an ISDN line.
>I'm not kidding. This is one of the reasons I haven't been very active
>in ham radio over the past few years.
Pretty much my sentiments. It seems like this thread has been going on for
years now....Everyone wants T3 to the shack....for free....
- Ed Maling
n7mlr@easilink.com - home (preferred)
edhm@chevron.com - work
------------------------------
Date: Tue, 27 Aug 1996 22:10:53 -0500 (CDT)
From: ssampson@othello.tinker.af.mil (Steve Sampson)
Subject: your mail
>
> unsubscribe rgb-eca@redestb.es
I didn't know you could do that. I thought you had to send the
request to listserv@ucsd.edu...
------------------------------
Date: Mon, 26 Aug 1996 22:34:55 +0000
From: "Rafael Garcia" <rgb-eca@redestb.es>
unsubscribe rgb-eca@redestb.es
------------------------------
End of TCP-Group Digest V96 #174
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