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#Post#: 138--------------------------------------------------
ISP
By: dtomsett Date: January 1, 2013, 8:00 am
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I would like to ask members about their experiences with the
various options we have available in the area for access to the
Internet. Back in August I switched from using a Vodaphone 3G
dongle to Albox Online. My inital impressions were very good
compared to what I had previously. Now some months down the line
I am not so sure if this service is always reliable, provides
sufficient bandwidth for my needs and good customer service.
Firstly, there are not infrequent occasions when the internet
goes off during the day when I need it the most. Then at what I
guess are peak times I am not sure if their service becomes
overloaded and cannot cope with the number of users. Finally, I
find it unhelpful that you cannot get hold of someone by
telephone 24/7/365 and when you do, not a particularly friendly
welcome!
I would be interested in switching to a sattelite system but am
unsure as to the cost and benefts this would provide over and
above Albox Online.
Would appreciate any comments.
#Post#: 140--------------------------------------------------
Re: ISP
By: Intelinside Date: January 4, 2013, 3:26 pm
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Firstly apologies for not getting on here and giving a reply
earlier, but been a bit busy lately.
I cannot give you any comment about the providers in the area as
i have a fixed Telephone line and my up/down speeds are fairly
constant at all times.
Anyway to hopefully give you some insight into the problems you
are experiencing i found the following a couple of years back
and i think it explains the workings quite well. Some of the
figures may not be that accurate but it explains the general
idea, anyway here goes....
All Internet service providers over sell their actual capacity
based on contention ratios they have calculated and whilst never
promising an actual speed they will state an up to speed when
marketing the package,whilst higher speeds are generally
becoming available.
The maths for the contentions are quite simple, these are not
exact figures but for illustrating the problem i will use these,
There is a factor that the ISP decides, and with national ADSL
providers it is likely to be a Ratio of 25 to 1 for business
accounts, and 50 to 1 for domestic accounts. but for example
lets say it 50 to 1.
The masts that provide the service are linked to internet
gateway sites with a capacity of (say) 150mbps over the link, so
the total capacity of the cellular station would be 150mbps,if
they are offering speeds of up to 3Mbps then with around 50
subscibers the contention would be one to one and everyone would
get their 3Mbps,however with only 50 clients the cell would lose
a lot of money (imagine the cost involved in setting up /
maintaining etc the mast) so the contention ratio is applied and
the site will not be considered saturated or making money until
over (lets say) 2000 clients are contracted.Your speed therefore
will very much depend on how many active sessions there are when
you are on line. Imagine a 100 active users streaming video
their actual rate would be around 1.5mbps and 200 users would
get 775Kbps.If all 2000 clients were on then each would only get
77.5Kbps a little more than dial up.
Operators will state a speed 2 - 3 -4 or 6Mbps for example and
yes these speeds are obtainable but only when the site is
lightly used.
Hope the explanation helps
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