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From: rob@pe1chl.ampr.org (Rob Janssen)
Subject: Re: X on dial-in
Reply-To: pe1chl@wab-tis.rabobank.nl
Organization: PE1CHL
Message-ID: <D3pF0z.1rq@pe1chl.ampr.org>
References: <3f44s2$jqm@maverick.maverick.tad.eds.com> <3h4363$jqv@deep.rsoft.bc.ca> <D3LFnr.KJG@bonkers.taronga.com> <D3ME6C.14t@pe1chl.ampr.org> <D3ns6F.2w9@bonkers.taronga.com>
Date: Wed, 8 Feb 1995 23:10:10 GMT
Lines: 28

In <D3ns6F.2w9@bonkers.taronga.com> peter@bonkers.taronga.com (Peter da Silva) writes:

>In article <D3ME6C.14t@pe1chl.ampr.org>,
>Rob Janssen <pe1chl@wab-tis.rabobank.nl> wrote:
>>An ISDN B-channel is just a synchronous bit-serial link.  the framing is
>>up to the user.

>How the bits are moved from one CO to another should be completely
>transparent. If it dedicates a line for them or it multiplexes them
>or wraps them in an IP packet shouldn't be relevant.

>If the design of ISDN prevents that, then ISDN is broken as designed.

Of course that can be done.  But what would be more interesting is to
send IP packets across ISDN and only pay when you send one, not when the
line is idle.  That is not simply a matter of putting ISDN bits in IP
packets at the CO, because you don't know which bits are IP packets and
which bits are just unused.

(in theory, of course.  when you define a framing protocol and put routers
at the CO, the problem is solved.  but I don't think that is currently done)

Rob
-- 
+------------------------------------+--------------------------------------+
| Rob Janssen         rob@knoware.nl | AMPRnet:   rob@pe1chl.ampr.org       |
| e-mail: pe1chl@wab-tis.rabobank.nl | AX.25 BBS: PE1CHL@PI8UTR.#UTR.NLD.EU |
+------------------------------------+--------------------------------------+