Having some experience on this...
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).
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! )..
There is a bit of investment with the ground station
dishes/modems/block up converters(amplifiers) depending on your
bandwidth requirements.
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).
e.g
https://www.comtechefdata.com/files/articles_papers/WP-Doubletalk%20Carrier-in-Carrier%20&%20CDM-625%20White%20Paper.pdf
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!!
https://www.satbeams.com/satellites?norad=35362
<http://www.dxsatcs.com/sites/default/files/satellite/91-5east-c/Measat%203%20at%2091.5%20E%20_%20Global%20footprint.jpg>
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!))
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 !).
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.
You could always carry other peoples traffic at a $, if your bandwidth
isn't fully utilized !!
Cheer
Greg..
On 18/12/2017 8:08 PM, Ian Henderson wrote:
On 18 Dec 2017, at 3:14 pm, Cameron Murray <[email protected]> wrote:
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.
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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