[clug] Trump Telstra once and for all

Paul TBBle Hampson Paul.Hampson at Pobox.com
Wed Oct 11 14:13:58 GMT 2006

On Wed, Oct 11, 2006 at 08:48:16AM +1000, Andrew Goodall wrote:
> On 10/10/2006, at 10:48 PM, Paul TBBle Hampson wrote:

> >I _think_ it used to be possible to squeeze three lower-bitrate channels
> >through an ISG, but it seems that's been blocked on the network now,
> >from discussions on this list.

> Sorry, I should have been more specific. Its the Ethernet data that we
> were testing limits on. You're correct in pointing out that you can
> push heaps of video traffic down the ISG.

LOL. You managed to get 13Mb/s out of the 10Mb/s hub on the ethernet
side of the ISG? That's both a relief, and a heck of a feat. ^_^

And a relief, in so far as upping the speeds on the ISG _might_ be as
easy as retrofitting a 100BaseT MAC onto the ISG... Hmm, that's a less
bleak result than the one I got from this discussion yesterday.

> TransACT imposed a two-stream limit on the ISG a couple of years ago
> in the interests of limiting access network bandwidth contention.
> Prior to that I had also seen towards half a dozen streams through the
> ISG.

If we accept the anecdotal understanding I have that there's a 155Mb/s
OC-3 to each of the pole-top boxes serving up to 50 customers, then
that's a pretty good reason to limit people to two simultaneous channels
at a time.

Of course, I strongly doubt that number, since I can't see how someone
would have multiplied 50 * 8 and gotten a value less then 155... Even in
1998, when "broadband" meant sharing a 2Mb/s cable TV downstream with
the rest of your suburb... (Back in the days when the opposite of
broadband was baseband, not "narrowband")

Paul "TBBle" Hampson, B.Sc, LPI, MCSE
On-hiatus Asian Studies student, ANU
The Boss, Bubblesworth Pty Ltd (ABN: 51 095 284 361)
Paul.Hampson at Pobox.Com

Of course Pacman didn't influence us as kids. If it did,
we'd be running around in darkened rooms, popping pills and
listening to repetitive music.
 -- Kristian Wilson, Nintendo, Inc, 1989

License: http://creativecommons.org/licenses/by/2.1/au/
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