Fri Jun 28 20:03:03 EST 2013
How much bandwidth does Skype need?
The bandwidth required by Skype depends on the type of calls you want to=20
make. The table below provides the minimum download and upload speeds=20
required, as well as the recommended speeds for best performance.
/ upload speed
/ upload speed
Calling 30kbps / 30kbps 100kbps / 100kbps
Video calling /
Screen sharing 128kbps / 128kbps 300kbps / 300kbps
(high-quality) 400kbps / 400kbps 500kbps / 500kbps
(HD) 1.2Mbps / 1.2Mbps 1.5Mbps / 1.5Mbps
(3 people) 512kbps / 128kbps 2Mbps / 512kbps
(5 people) 2Mbps / 128kbps 4Mbps / 512kbps
(7+ people) 4Mbps / 128kbps 8Mbps / 512kbps "
I do not know how that will display in people's different email=20
applications, in terms of its formatting.
But, it shows that, for high definition video calls, an upload data=20
transmission rate of at least 1.2Mbs, is reqired, and, preferably, at=20
The "baseline" packages appear to involve an upload data transmission=20
rate of 1Mbps, which is, apparently, not enough for high definition=20
"What is the point of getting connected to the NBN, if it does not=20
include high definition video calls?"
So, the "entry level" NBN package for providing the capacity for high=20
definition video calls, appears to be the "25Mbps/5Mbps" package, which,=20
shows comparative pricing of
RESIDENTIAL PLANS PER MONTH
Provider Cost Data Limit
Internode $54.95 30GB
iiNet $54.95 40GB
Westnet $54.95 40GB
Optus* $75 120GB
iPrimus $59.95 40GB
Telstra $65 25GB
Exetel $54.50 50GB (unmetered offpeak)
MyNetFone $59.95 250GB
Engin =E2=80=94 =E2=80=94
Club Telco $55 50GB
Activ8me (Satellite) =E2=80=94 =E2=80=94
Harbour ISP (Satellite) =E2=80=94 =E2=80=94
Skymesh (Satellite) =E2=80=94 =E2=80=94
iiNet (Satellite) =E2=80=94 =E2=80=94
iPrimus (Fixed Wireless) =E2=80=94 =E2=80=94
Internode (Fixed Wireless) =E2=80=94 =E2=80=94
Skymesh (Fixed Wireless) $39.95 20GB
iiNet (Fixed Wireless)
Once again, I do not know how that will display in perople's email=20
The point is, that various monthly pricing figures have been put, for=20
ongoing access to the NBN (as opposed to the installation costs, which=20
are not included here, and, probably also vary between the vendors),=20
but, to me, the current ~1.5Mbps download speed (I do not know what is=20
the estimated upload speed - Optus keeps its expected data transmission=20
speeds, secret from it customers) appears to be adequate for most=20
things, with the main restriction on download speeds, being not the=20
carrier servce, but, what is happening between the computer CPU and the=20
web server CPU, resulting in download speeds varying from about 4-5bps=20
to about 1.5Mbps (when downloads are not stalled), appears to be mostly=20
I have managed to successfully engage in Skype video calls (but not=20
either Ekiga or Linphone) with people both interstate, in Australia,=20
and, in a country outside Australia, which worked, but, were not fluid,=20
high definition calls.
As a novice to video calls, I found them to be a worthwhile (and, to a=20
great extent, untapped) means of communication.
Unfortunately, we appear to not have, in the ADSL packages that cost=20
less than $80 per month, full duplex transmission that includes expected=20
ulpoad transmissionm rates of 1.5Mbps or higher.
I think that the only significant advantage (for me), in the purported=20
benefits of the NBN, is the potential for high definition video calls,=20
and, whilst most people have not taken up the opportunity to use the=20
World Wide Web, for making video calls, it has been used in science=20
fiction movies and television series, for decades, and, "we have the=20
technology". People seem simply too worried about their appearances=20
("will my backside look big in it?", "will it show my pimples?" "will it=20
show my grey hairs?", etc), but, with the prospect of high definition=20
video calls, people will be able to communicate, face to face, without=20
being physically present, and, with multiple people, concurrently, if=20
they are not so vain.
But, the capability for that, is not included in the NBN service=20
packages that have upload speeds of less than 1.5Mbps.
So, I think that (at this stage, as it offers the lowest upload data=20
transmission rate that can provide for high definition video calls), the=20
25/5Mbps level package, should be regarded as the minimum [package to=20
determine whether the NBN is worth having.
That is my opinion, anyway, and, no doubt, other will disagree.
"So once you do know what the question actually is,
you'll know what the answer means."
- Deep Thought,
Chapter 28 of Book 1 of
"The Hitchhiker's Guide to the Galaxy:
A Trilogy In Four Parts",
written by Douglas Adams,
published by Pan Books, 1992
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