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Having some experience on this...<br>
If latency isn't a big issue and depending on how $ you have to
spend on the link per month, you can go a contract with a C-Band
satellite provider(using a typical global beam off the bird). <br>
There are a few satellites around 91 degree's east e.g Measat3 and
can do a single hop from East cost of Aus to South Africa on 1 hop
~550mS round trip. (This Is still good enough for a voip/vtc
call(250mS each way! )..<br>
There is a bit of investment with the ground station
dishes/modems/block up converters(amplifiers) depending on your
bandwidth requirements.<br>
IP Sat modems over the last 5 years have got some good modulation
schemes and technology with the efficiency per Hz is dam as opposed
to gear ~10years ago.. (Google carrier-in-carrier / doubletalk type
modems ~40% more b/w efficient).<br>
e.g <a moz-do-not-send="true"
href="https://www.comtechefdata.com/files/articles_papers/WP-Doubletalk%20Carrier-in-Carrier%20&%20CDM-625%20White%20Paper.pdf">https://www.comtechefdata.com/files/articles_papers/WP-Doubletalk%20Carrier-in-Carrier%20&%20CDM-625%20White%20Paper.pdf</a><br>
<br>
Take a look at this typical C-band GLOBAL satellite footprint for
measat. Global beams for sat providers roughly = 1/4 to 1/3 of the
planet depending on their antenna configs & tx power etc!! <br>
<a moz-do-not-send="true"
href="http://www.dxsatcs.com/sites/default/files/satellite/91-5east-c/Measat%203%20at%2091.5%20E%20_%20Global%20footprint.jpg">https://www.satbeams.com/satellites?norad=35362<br>
</a><br>
Cost per MHz-per month is a consideration(contracts typically reduce
in price if you take them over a longer term!!). You'll want a 5 to
7meter or bigger dish(depends on your bandwidth requirement(the more
b/w, the bigger the dish & (and amplifier!)) <br>
and your look angles from Aus & Africa ~20 degrees(depending on
where you are(typically if look angle <15degree's to the
satellite then, don't bother !). <br>
<br>
With sat comm's, at the end of the day, you have full control over
your link and you don't have to go chasing fiber-carrier providers.<br>
You could always carry other peoples traffic at a $, if your
bandwidth isn't fully utilized !!<br>
<br>
Cheer<br>
Greg..<br>
<br>
<br>
<br>
<div class="moz-cite-prefix">On 18/12/2017 8:08 PM, Ian Henderson
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:5B97E0BD-14C7-41EB-8661-E17AFD0AD994@ianh.net.au">
<pre wrap="">On 18 Dec 2017, at 3:14 pm, Cameron Murray <a class="moz-txt-link-rfc2396E" href="mailto:cameron.murray@gmail.com"><cameron.murray@gmail.com></a> wrote:
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<pre wrap="">
I've been asked to entertain the idea of a customer of ours needing a dedicated link between their Australian branches and their head office in ZA.
</pre>
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<pre wrap="">
Have a bit of experience with this route via a few different carriers. SMW3 Perth to Singapore, TIC across India, SAFE down the coast of Africa. Others have covered most of the things I’d recommend, but my best suggestion is to look into WAN acceleration products. We used Riverbed - the improved user experience of the usual MS suite and SSL web apps ZA -> AU was great. Of course the benefits depend on how the app works - an intermediate jump host in AWS Singapore might provide ‘good enough’ performance gains compared to the cost of a WAN acceleration platform.
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