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Date: Thu, 17 Feb 2005 23:03:12 +0100
From: Martin Husemann <martin@duskware.de>
To: Jeremy Gale <jgale.work@gmail.com>
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cc: freebsd-isdn@freebsd.org
Subject: Re: Network Interfaces and PRI questions
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On Thu, Feb 17, 2005 at 02:55:50PM -0700, Jeremy Gale wrote:
> One thing I'm still not clear on... what does a network interface
> (i4bipr/i4bisppp or irip/ippp in NetBSD-ese) represent? Does it
> represent an ISDN call?

Nope, those are just potential users of B channels. There is no 
network interface associated with a call itself, but once you start
speaking PPP on top, you get a ippp interface.

> If you want a call on each B-channel of an
> ISDN BRI, does that mean you should have two devices, e.g. i4bipr0 and
> i4bipr1? This is an important consideration for me because it could
> mean literally hundreds of interfaces.

What is the problem here? This interface are going to be clonabel
soon (it's realy a bug that they are not yet)

> Or does it represent more of a
> physical ISDN connection between two endpoints?

No, it's just a carrier for network configuration. You do not need
to use them at all (like userland ppp does).

> How is the PRI support in i4b?

AFAIK it's functional, at least with the iavc driver.

Martin