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PA2AGA > TCPDIG 14.02.98 00:33l 186 Lines 5967 Bytes #-9590 (0) @ EU
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Subject: TCP-Group Digest 98/17B
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> > (which could actually be easy, I haven't looked into it), the current
> > bandwith constraints of AX.25 and the bandwith requirements of
> > bidirectional voice straeming.
>
> There are no inherent bandwidth constraints for AX.25, it is the radio
> and the modem that are the largest constraint. Running IP over AX.25/UI
> mode is moderately efficient with large packet sizes.
>
> Terry
>
------------------------------
Date: Thu, 12 Feb 1998 08:42:23 +1100
From: Terry Dawson <terry@perf.no.itg.telstra.com.au>
Subject: wearable telephone gateway
Walt DuBose - K5YFW wrote:
> I've also worked backpack TCP/IP...this would be a real Hoot using a
> PalmTop and micro-TNC at 9600 BPS.
Heh, that's great, that'd be a lot of fun :)
I'd like to see our WICEN (Wireless Institute Civil Emergency
Network) look into the same sort of arrangement. There are many
events where I think wearable packet radio technology would be
a very real boon for them.
Terry
------------------------------
Date: Wed, 11 Feb 1998 22:08:37 +0000 (GMT)
From: Alan Cox <alan@cymru.net>
Subject: wearable telephone gateway
> I'd like to see our WICEN (Wireless Institute Civil Emergency
> Network) look into the same sort of arrangement. There are many
> events where I think wearable packet radio technology would be
> a very real boon for them.
The IBM PC110's certainly make great palmtop PC's and with the base station
attached will drive a TNC (unfortunately the 486SLC CPU isnt powerful enough
to use the soundmodem driver). With the toshbia libretto palmtops you might
actually manage that.
Has anyone attempted to connect a TNC to the 3com palmpilot yet ?
Alan
------------------------------
Date: Thu, 12 Feb 1998 10:56:01 +1100
From: Terry Dawson <terry@perf.no.itg.telstra.com.au>
Subject: wearable telephone gateway
Alan Cox wrote:
> The IBM PC110's certainly make great palmtop PC's and with the base station
> attached will drive a TNC (unfortunately the 486SLC CPU isnt powerful enough
> to use the soundmodem driver). With the toshbia libretto palmtops you might
> actually manage that.
I have a Libretto, great Linux machine, but unfortunately it doesn't
have any audio input, only output, probably the most annoying feature.
> Has anyone attempted to connect a TNC to the 3com palmpilot yet ?
There are a few floating around here, should give it a try.
Graffiti-Packet :)
Terry
------------------------------
Date: Wed, 11 Feb 1998 19:13:38 -0500
From: Joseph Gaffney <gaffney@thethinker.com>
Subject: wearable telephone gateway
At 10:56 AM 2/12/98 +1100, Terry Dawson wrote:
>I have a Libretto, great Linux machine, but unfortunately it doesn't
>have any audio input, only output, probably the most annoying feature.
Well... does it have an open serial port? You could probably use one of
atmel's avr chips as an in-between (VERY fast little chips) and have it
convert audio data so you can have input coming in, just translated through
the chip. It'd probably be fairly small, too.
------------------------------
Date: Thu, 12 Feb 1998 11:55:18 +1100
From: Terry Dawson <terry@perf.no.itg.telstra.com.au>
Subject: wearable telephone gateway
Joseph Gaffney wrote:
> Well... does it have an open serial port? You could probably use one of
> atmel's avr chips as an in-between (VERY fast little chips) and have it
> convert audio data so you can have input coming in, just translated through
> the chip. It'd probably be fairly small, too.
Yeh, it does, but that's kinda missing the point. The point of having
a soundcard was to be able to use the Linux soundmodem driver to avoid
the requirement of a TNC.
Terry
------------------------------
Date: Wed, 11 Feb 1998 20:19:17 -0500
From: Joseph Gaffney <gaffney@thethinker.com>
Subject: wearable telephone gateway
At 11:55 AM 2/12/98 +1100, Terry Dawson wrote:
>Yeh, it does, but that's kinda missing the point. The point of having
>a soundcard was to be able to use the Linux soundmodem driver to avoid
>the requirement of a TNC.
>
>Terry
Well, thats true, but it may end up being more cost-effective to do that
than to buy another system b/c of that.
------------------------------
Date: Thu, 12 Feb 1998 09:25:57 +0000 (GMT)
From: Alan Cox <alan@cymru.net>
Subject: wearable telephone gateway
> > Has anyone attempted to connect a TNC to the 3com palmpilot yet ?
>
> There are a few floating around here, should give it a try.
> Graffiti-Packet :)
It doesnt seem to unreasonable, and Linux/Palmpilot is in progress
------------------------------
Date: Thu, 12 Feb 1998 07:18:29 -0500 (EST)
From: "Dr. Terrance Boult" <tboult@EECS.Lehigh.EDU>
Subject: wearable telephone gateway
>>Alan Cox wrote:
>>
>>> The IBM PC110's certainly make great palmtop PC's and with the base
station
>>> attached will drive a TNC (unfortunately the 486SLC CPU isnt powerful
enough
>>> to use the soundmodem driver). With the toshbia libretto palmtops you
might
>>> actually manage that.
>>
>>I have a Libretto, great Linux machine, but unfortunately it doesn't
>>have any audio input, only output, probably the most annoying feature.
Did not do it myself (yet), but I recall a demo at the wearables conference
where someone (from MIT media I believe) went in and just soldered an input
connection
to the sound-blaster chip. Input support is there, just no access.
Terry Boult --- Vision and Software Technology Lab, EECS Dept. Lehigh Univ.
tboult@eecs.lehigh.edu http://www.eecs.lehigh.edu/~tboult
------------------------------
End of TCP-Group Digest V98 #17
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