[clug] August 2019 CLUG Meeting
sjenkin at canb.auug.org.au
Fri Aug 23 02:05:13 UTC 2019
For those of you playing along at home…
Last night I opined that JASURUS cable was removed from the seabed (in 2010 or 2012).
It was only decommissioned, Steve Walsh was correct.
It was PacRim-West that got hauled up and repurposed (Phase 3 of project with phase 1: Tasman-2, our first Optical Fibre Cable)
There’s not much on the Net about Tasman-2. This 1987 media release is a very useful overview
APNG-2 on “Submarine cable map” - worth exploring for other cables.
> An 1,800 km section of the PacRimWest cable was recovered from just south of Guam, with the ship sailing towards the Solomon Islands.
> The ship then recovered a loop of the PacRimWest cable off Rockhampton, Queensland, broke it, and spliced it to the Sydney end of the recovered 1,800 km section, sailed towards PNG, made landfall at Ela Beach near Port Moresby, where a terminal station from Guam was re-established to link to the Telikom PNG network.
> PacRimWest is a fibre-optic cable with two fibre pairs. These will be used to provide APNG-2 with around 1100 Mbit/s data capability, consisting of 2 x 565 Mbit/s PDH systems with all electronic regeneration.
> The Network was designed to have an operational life of 25 years,
> but became obsolete within only three years with the building of Jasuraus,
> although after decommissioning in 2005
> the cable was cut near the Solomon Islands and relaid to form APNG-2 in 2006
> connecting Sydney and Papua New Guinea,
> saving PNG around 80% of the cost of building a new cable
> and plant with the equipment from the Guam landing station being moved to PNG.
> The PacRimWest and Eastern cables were part of the South Pacific Network of Cables. The South Pacific Network linked Australia and New Zealand with Hawaii and Guam and connected with networks in the United States, Europe, Japan and South East Asia. It meant a great leap in Australia's international links, being able to handle around 80,000 voice circuits (phone calls), a great increase on the 1984 built ANZCAN cable it superseded which could handle only 1,380 voice circuits.
> PacRimWest at the time was the longest continuous submarine cable laid to that date at 7,062km (4,414 miles) and one of the most trailblazing cables passing through the Mariana Trench near Guam at a depth of 8,900m (29,000 feet). The cable used only 53 repeaters with spacing at around 135km (84 miles).
> Part of the rationale behind the PacRim network was to bring much of the region's telecommunications traffic to Australia, forming a regional telecommunications and technology hub. The largest shareholder was OTC, Australia's international carrier and around 70 percent of the cable was manufactured in Australia.
> On 19 Aug 2019, at 16:58, Steve Walsh via linux <linux at lists.samba.org> wrote:
> Time: 19:00 - 21:00 (or when it finishes)
> Title: Commissioning an undersea cable.
> Tim Rayner, AARNet
> Abstract: Ever wondered what it takes to 'turn up' a new undersea
> cable? do you wonder how they power all those repeaters?
> Is it just a bunch of 9V batteries joined together?
> Come along to this month's talk and hear Tim talk about
> why there is good noise and bad noise on an undersea cable,
> how do you maintain diversity when there's only one ocean,
> and find exactly how far away a 600Gbps test continues to
> really be 600Gbps (or 400, 300 or even 200Gbps).
> Venue: Room N101
> Computer Science and Information Technology Building
> North drop
> The Australian National University
> See http://clug.org.au/ for more directions and a map
> Food/drink: Pizza and soft drink/juice. Come hungry, and bring
> about $6-$7 to cover the cost of your share if you
> want some.
> September Meeting - 26th September 2019 (Fourth Thursday of the month)
> Talk topic to be confirmed
> linux mailing list
> linux at lists.samba.org
Steve Jenkin, IT Systems and Design
0412 786 915 (+61 412 786 915)
PO Box 38, Kippax ACT 2615, AUSTRALIA
mailto:sjenkin at canb.auug.org.au http://members.tip.net.au/~sjenkin
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