383 lines
15 KiB
Plaintext
383 lines
15 KiB
Plaintext
Original Message Date: 28 Mar 92 00:01:55
|
||
From: Uucp on 1:125/555
|
||
To: Tom Jennings on 1:125/111
|
||
Subj: Freely available ISDN interface project
|
||
^AINTL 1:125/111 1:125/555
|
||
From kumr!toad.com!gnu
|
||
From: gnu@toad.com
|
||
To: tom@toad.com (Tom Jennings), mkapor@eff.org (Mitch Kapor),
|
||
Date: Fri, 27 Mar 92 11:49:23 -0800
|
||
Cc: gnu@toad.com (John Gilmore), pozar@toad.com (Tim Pozar),
|
||
|
||
You-all have expressed interest in working on freely available
|
||
implementations of software that would interface common computers to
|
||
ISDN.
|
||
|
||
It is worth exploring whether you-all are interested in collaborating
|
||
on a freely available ISDN protocol implementation in C. This would
|
||
cause the production of ISDN-ready products to explode, and make these
|
||
products much more usable because they'd be more highly integrated.
|
||
By `freely available', I mean public domain source code, or copyrighted
|
||
source code with unlimited, royalty-free distribution permitted (such
|
||
as with UC Berkeley software).
|
||
|
||
Much current work makes ISDN look like a slightly faster modem, with
|
||
ISDN protocol processing isolated in an expensive ``modem'' connected
|
||
to the computer over a low performance serial port. High speed ISDN
|
||
interfaces will be sitting on a single chip on many computers'
|
||
motherboards by the end of the year, and plug-in cards for PC's and
|
||
such are already available. Software that can directly interface to
|
||
ISDN and use it for networking, voicemail, high speed fax, eventual
|
||
speech recognition, and such would be a vast improvement over the
|
||
``modem'' model.
|
||
|
||
I know that Tom and Ted have the technical skills needed to work on
|
||
the project (perhaps John Reilly too -- we haven't met). What we lack
|
||
is funding and a clear direction. Tom has been doing some consulting
|
||
with Saskatchewan Tel on hooking up Hayes ISDN modems to IBM PC's.
|
||
Mitch is `marketing' and proselytizing to a variety of companies
|
||
(including telcos) about funding ISDN and accelerating its spread.
|
||
Among us all, it should be possible to connect these people and ideas
|
||
and funds into something that will quickly bring ISDN into every
|
||
product and research project that can use it. Are you interested?
|
||
|
||
John Gilmore
|
||
|
||
PS: My own company has discovered that it's not hard to make money
|
||
providing support and improvements to a free product -- after it
|
||
has been written and has gotten into active use in many companies.
|
||
|
||
------- Forwarded Messages (FYI)
|
||
|
||
To: Ted Lemon <mellon@pa.dec.com>
|
||
Cc: mkapor@eff.org, gnu@toad.com
|
||
Subject: Re: ISDN...
|
||
Date: Wed, 05 Feb 92 19:20:36 -0800
|
||
From: gnu@toad.com
|
||
|
||
> Is there any PD software out there for handling the terminal adapter
|
||
> connection signaling - i.e., telling the CO who to connect your lines to,
|
||
> answering calls, and so on? DEC now has a machine that has something <20>
|
||
that
|
||
> provides either the Terminal Adapter capability, or that plus the NT1
|
||
> capability (I don't know enough about ISDN yet to be sure which) on the <20>
|
||
base
|
||
> system, and it lists for $3995 in a monochrome diskless configuration.
|
||
|
||
I don't know of any PD software for handling ISDN call setup and teardown.
|
||
I have heard that it is very hairy and complicated software, too.
|
||
|
||
The latest twist is to have "ISDN modems" which do the call setup and
|
||
teardown for you, using "AT" commands. There is a draft standard for this.
|
||
DC Hayes has been working hard on this stuff, and you can contact their
|
||
ISDN office in San Francisco at +1 415 974 5544. Try talking to Bill <20>
|
||
Taylor,
|
||
though he will try to charge you $125 for the specs. Tell him what he's
|
||
full of and see if you can get the standards committee contact name <20>
|
||
instead.
|
||
|
||
Mitch, one thing to pitch as you talk to ISDN vendors and suppliers,
|
||
would be that a free implementation in source code would greatly
|
||
expand the market for ISDN over the next few years, just as the free
|
||
implementation of TCP/IP in Berkeley Unix (work funded by DARPA)
|
||
resulted in an explosion of high quality TCP/IP implementations.
|
||
Either a vendor could release their source code, or some telco
|
||
(perhaps BellCore?) might be willing to fund the writing of a free
|
||
one.
|
||
|
||
John
|
||
|
||
------- End of Forwarded Message
|
||
|
||
Date: Wed, 18 Mar 92 16:10 WET
|
||
From: JMREILLY@ccvax.ucd.ie
|
||
To: isdn@list.prime.com
|
||
Message-Id: <83A1264C279FC07566@ccvax.ucd.ie>
|
||
|
||
Our research group is currently working on a project that will
|
||
involve implementation of the forthcomming ETSI (European <20>
|
||
Telecommunications
|
||
Standards Institute) ISDN PCI (Programmable Communications Interface).
|
||
|
||
We would like to find out if anybody has IMPLEMENTED any of the existing
|
||
ISDN APIs/PCIs such as COM/APPLI,APPLI/COM,CAPI or the North American ISDN
|
||
Users Forum Application Software Interface (ASI).
|
||
|
||
Any information relating to the above would be much appreciated and if <20>
|
||
anyone
|
||
who has carried out (or intends to carry out) such an implementation would
|
||
like to cooperate with us we would be extremely grateful.
|
||
|
||
John Reilly
|
||
|
||
Address:
|
||
Computer Networks & Distributed Systems
|
||
Research Group,
|
||
Department Of Computer Science,
|
||
University College Dublin,
|
||
Belfield,
|
||
Dublin 4.
|
||
|
||
Phone: 353-1-7062488.
|
||
|
||
Fax: 353-1-2697262
|
||
|
||
Email: jmreilly@ccvax.ucd.ie
|
||
|
||
|
||
Original Message Date: 28 Mar 92 00:01:58
|
||
From: Uucp on 1:125/555
|
||
To: Tomj on 1:125/111
|
||
Subj: Re: Freely available ISDN interface project
|
||
^AINTL 1:125/111 1:125/555
|
||
From kumr!pozar
|
||
From: pozar@kumr.lns.com (Tim Pozar)
|
||
To: gnu@toad.com
|
||
Date: Fri, 27 Mar 92 12:41:05 PST
|
||
Cc: tom@toad.com, mkapor@eff.org, mellon@pa.dec.com, <20>
|
||
jmreilly@ccvax.ucd.ie,
|
||
|
||
I would love to work on this project.
|
||
|
||
About a year to two years ago, I was looking into using ISDN for
|
||
passing IP to/from The Little Garden to/from me. I lined up the boxes
|
||
from Hayes (Hayes' development for ISDN is here in SF) and was stopped
|
||
when I found that the local CO would not be supporting ISDN for at least
|
||
three years down the line. (They kept suggesting that I move my "office"
|
||
to an area where PacBell has ISDN support.)
|
||
|
||
(Hmmm, this message has prompted me to give a call to my ISDN contact at
|
||
PacBell and see what the status is on the COs in SF is. I will follow <20>
|
||
up
|
||
to this list.)
|
||
|
||
If I can get ISDN here at home, with hopefully some one else I can bang
|
||
the boxes against (e.g. TJ) I would make the project one of my higher
|
||
prioity projects. Its up to the PacBell gods as when the CO will be
|
||
supporting ISDN.
|
||
|
||
Tim
|
||
|
||
|
||
|
||
Original Message Date: 28 Mar 92 00:02:02
|
||
From: Uucp on 1:125/555
|
||
To: Tomj on 1:125/111
|
||
Subj: Re: Freely available ISDN interface project
|
||
^AINTL 1:125/111 1:125/555
|
||
From kumr!uunet.UU.NET!lupine!mellon
|
||
From: lupine!mellon@uunet.UU.NET (Ted Lemon)
|
||
To: pozar@kumr.lns.com (Tim Pozar)
|
||
Date: Fri, 27 Mar 92 12:58:01 PST
|
||
Cc: gnu@toad.com, tom@toad.com, mkapor@eff.org, mellon@Pa.dec.com,
|
||
|
||
|
||
I think ISDN is available in San Francisco now. PacBell upgraded the
|
||
CO software in Palo Alto just before the ISDN release came out, and
|
||
they don't like to upgrade COs very often, so Palo Alto is pretty much
|
||
the only place in Silly Valley that doesn't have ISDN and won't have
|
||
it in the near future. Mountain View, where I work, has ISDN, and so
|
||
does Sunnyvale, where I'm hoping to move soon. Even La Honda (my
|
||
current home) should have it by the end of 1992.
|
||
|
||
The only catch is that it's not tariffed for single line use yet -
|
||
you have to buy a Centrex, with a minimum of two lines. The total
|
||
setup cost is around $900 for the Centrex and the two lines; the cost
|
||
per month is about $25 per line, for a total of $50. The PacBell rep
|
||
that I've been dealing with thinks that the new tariff may be out this
|
||
year, but didn't want to make any promises...
|
||
|
||
_MelloN_
|
||
|
||
|
||
Original Message Date: 28 Mar 92 00:02:06
|
||
From: Uucp on 1:125/555
|
||
To: Tom Jennings on 1:125/111
|
||
Subj: Re: Freely available ISDN interface project
|
||
^AINTL 1:125/111 1:125/555
|
||
From kumr!uunet.UU.NET!lupine!mellon
|
||
From: lupine!mellon@uunet.UU.NET (Ted Lemon)
|
||
To: gnu@toad.com
|
||
Date: Fri, 27 Mar 92 12:53:10 PST
|
||
Cc: tom@toad.com (Tom Jennings), mkapor@eff.org (Mitch Kapor),
|
||
|
||
|
||
I am definitely interested! I already have hardware for the project
|
||
donated by DEC; I still need to finish making BSD work on it, but
|
||
that's mostly done. This is a description that I've written up about
|
||
what I want to do with ISDN (This is part of an addendum to my
|
||
employee agreement at NCD):
|
||
|
||
It is my intention, once I have 4.4BSD working reliably on
|
||
my home machine, to implement an ISDN driver for the ISDN
|
||
port which is built in to the machine. This driver will
|
||
allow a user to make both digital and audio connections over
|
||
ISDN to other ISDN connections and, in the case of audio
|
||
connections, to non-ISDN telephones.
|
||
|
||
The software will also be able to answer incoming audio
|
||
calls, play a message, record a message, and handle commands
|
||
entered in to an audio phone via DTMF (Touch Tone). Since
|
||
the ISDN connection being supported is a 2B+D connection, it
|
||
will be possible to perform any of the functions mentioned
|
||
above on two seperate channels.
|
||
|
||
The software may further be able to perform such functions
|
||
as remote caller identification, which may be used to
|
||
trigger different responses depending on the identity of the
|
||
calling station; possible responses include selective
|
||
forwarding, selective voice mail, and selective presentation
|
||
of incoming calls for answering by a human. This will most
|
||
likely be accomplished through the use of a shell script or
|
||
shell scripts which are passed the caller's identification
|
||
on the command line; thus, any sort of action which can be
|
||
taken by the system can be selectively triggered based on
|
||
the ID of an incoming call.
|
||
|
||
What I didn't mention is that I want to run IP over the digital
|
||
connection - a 64kilobaud single-streaming modem isn't very useful.
|
||
|
||
My main obstacles right now are that I don't have access to a standards
|
||
document telling me what protocol to speak, and that I don't have a test
|
||
bed - you're not allowed to test your software on the network; you have
|
||
to get it certified at PacBell first. PacBell seems eager to help
|
||
stimulate development, though, so I'm hoping that they'll give me access
|
||
to their test equipment from time to time during implementation.
|
||
|
||
Needless to say, there's a lot of work to be done here, so I'd rather
|
||
have other people working with me on it!
|
||
|
||
_MelloN_
|
||
|
||
|
||
Original Message Date: 28 Mar 92 00:02:08
|
||
From: Uucp on 1:125/555
|
||
To: Tom Jennings on 1:125/111
|
||
Subj: Re: Freely available ISDN interface project
|
||
^AINTL 1:125/111 1:125/555
|
||
From kumr!eff.org!mkapor
|
||
From: mkapor@eff.org (Mitch Kapor)
|
||
To: tom@toad.com (Tom Jennings), mkapor@eff.org (Mitch Kapor),
|
||
Date: Fri, 27 Mar 1992 21:16:29 -0500
|
||
Cc: gnu@toad.com (John Gilmore), pozar@toad.com (Tim Pozar),
|
||
|
||
EFF would be interested in (1) serving as a principal FTP site for such a
|
||
project, and (2) "marketing" and promoting it. We'd also be able to serve
|
||
as a test site for the software, as we expect to have ISDN linking our
|
||
office to staff members' homes soon.
|
||
|
||
|
||
|
||
Original Message Date: 05 Apr 92 09:46:45
|
||
From: Uucp on 1:125/555
|
||
To: Tomj on 1:125/111
|
||
Subj: Re: Freely available ISDN interface project
|
||
^AINTL 1:125/111 1:125/555
|
||
From kumr!pozar
|
||
From: pozar@kumr.lns.com (Tim Pozar)
|
||
To: lupine!mellon@uunet.UU.NET (Ted Lemon)
|
||
Date: Mon, 30 Mar 92 11:20:42 PST
|
||
Cc: lupine!gnu@toad.com, lupine!tom@toad.com, lupine!mkapor@eff.org,
|
||
|
||
Ted Lemon wrote:
|
||
> I think ISDN is available in San Francisco now.
|
||
> [...]
|
||
> The only catch is that it's not tariffed for single line use yet -
|
||
> you have to buy a Centrex, with a minimum of two lines. The total
|
||
> setup cost is around $900 for the Centrex and the two lines; the cost
|
||
> per month is about $25 per line, for a total of $50. The PacBell rep
|
||
> that I've been dealing with thinks that the new tariff may be out this
|
||
> year, but didn't want to make any promises...
|
||
>
|
||
> _MelloN_
|
||
|
||
This was confirmed by a PacBell employee this last Friday. You need
|
||
Centrex to get ISDN and you need to get at least two loops.
|
||
|
||
Tim
|
||
|
||
--
|
||
Internet: pozar@kumr.lns.com FidoNet: Tim Pozar @ 1:125/555
|
||
UUCP: ...!uunet!kumr.lns.com!pozar
|
||
Snail: Tim Pozar / KKSF / 77 Maiden Lane / San Francisco CA 94108 / USA
|
||
Voice: +1 415 788 2022
|
||
|
||
|
||
Original Message Date: 11 Jul 92 23:50:22
|
||
From: Uucp on 1:125/555
|
||
To: Tom Jennings on 1:125/111
|
||
Subj: [dap@aberystwyth.ac.uk: WAS : Re: IP over Circuit ISDN EVOLUTION FROM T
|
||
^AINTL 1:125/111 1:125/555
|
||
From kumr!toad.com!gnu
|
||
From: gnu@toad.com
|
||
To: tom@toad.com
|
||
Date: Sat, 11 Jul 92 18:15:21 -0700
|
||
|
||
This is a great idea. I guess the ISDN TA's from Hayes can't do it.
|
||
You need a real ISDN interface (that hands you all the bits) so you can
|
||
reinterpret it to analog and then decode it like a modem. But it's
|
||
a great hack if you have a DSP handy (or can route the ISDN audio into
|
||
a modem chip).
|
||
|
||
John
|
||
|
||
------- Forwarded Message
|
||
|
||
To: iplpdn@NRI.Reston.VA.US
|
||
Cc: "k1io, FN42jk" <goldstein@carafe.tay2.dec.com>, isdn@list.prime.com,
|
||
rjg@aberystwyth.ac.uk, dap@aberystwyth.ac.uk, <20>
|
||
brc@aberystwyth.ac.uk,
|
||
tsh@aberystwyth.ac.uk
|
||
Subject: WAS : Re: IP over Circuit ISDN EVOLUTION FROM THE PAST
|
||
In-Reply-To: Your message of "Thu, 09 Jul 92 13:41:46 +0200." <20>
|
||
<CMM.0.90.0.710656906.murakami@ntt-20.ntt.jp>
|
||
Date: Thu, 09 Jul 92 10:41:38 +0100
|
||
From: dap@aberystwyth.ac.uk
|
||
|
||
Dear All,
|
||
I have been considering 'evolution' and the introduction
|
||
of an ISDN service. Clearly, many users are presently using modems,
|
||
others will start using ISDN by means of V110 (etc) terminal adaptors.
|
||
|
||
I believe that it will prove useful to accept calls
|
||
from each of the above situations on an ISDN interface that can also
|
||
accept all the link level protocols being addressed in the MLP
|
||
discussions.
|
||
|
||
What does this imply? Well, all the old modem standards
|
||
only generate 'voice style' frequencies on the wire. Thus, if
|
||
the modem call starts on an analogue network, it should be able
|
||
to call into the ISDN network where it will be specifying
|
||
a 'voice' capable channel. It is clearly possible that if
|
||
we accepted the byte stream, we could, in software, recreate
|
||
the original bit stream that entered the modem. Similarly
|
||
(and more easily) we can clearly handle V110 in software too.
|
||
|
||
Why do I wish to do this? Simply I wish
|
||
to establish an 'evolution strategy' I want to be able to make all my
|
||
new investment in ISDN, but still be able to support 'home'
|
||
and other remote users who have modems or who buy TAs
|
||
without having to buy them all new ISDN cards too.....
|
||
I really dont want lots of modem racks at the central end either....
|
||
In fact we dont have many modem lines at the moment, but there is
|
||
strong pressure to provide more dialup access.
|
||
Some users (research staff, lecturers..)
|
||
may indeed be able to afford ISDN cards for their PCs or
|
||
workstations but the 'students' and others may not.
|
||
It seems silly to invest in both more analogue lines and modems
|
||
on site as well as new ISDN lines and interfaces too.
|
||
|
||
So, what do people think? Does anyone have code to interpret
|
||
modem or TA generated traffic in software? Do you all
|
||
think this is rubbish?
|
||
|
||
Of course, if we accept the above, we may find us decoding
|
||
modem or TA traffic, finding it contains 'SLIP' or 'PPP' and then dealing
|
||
with that too.....
|
||
|
||
Bye for now,....
|
||
Dave Price
|
||
|
||
------- End of Forwarded Message
|
||
|