do you get the correct speeds from IBB?

CyberGhost

if you have 1Meg installed, do you constantly download at 100kb/s? 10-15kb/s hops doesn't matter, but i read somewhere here, a guy was complaining about downloading at 7kb/s!

Mutant_Fruit

With a 1 meg line, 8-1 contention leaves you with a minimum of 128k, which equals a minimum of download speed of 16 kb's a second.

I've got the 512k line, and i generally get about 30kb's or faster down. I'd assume you should be able to get about 50kb's down on average (or faster).

CyberGhost

oh man that sucks, i can get 50 and 60 with netsource, i'm going with netsource

Mutant_Fruit

i;m quoting minimums here, based on the 512 product! It also depends on what tower your on. up til now the three rock tower was the only good tower (afaik) delivering fast speeds, however, the tallght tower has been refited with new kit, and i;ve noticed a definate improvement over last two days, have yet to drop below 40kb's. I still whole-heartedly recommend IBB, they can only get better and better!

If you;re unlucky on netsource, you'll be on contending with maybe 20+ people, then you get SLOW internet, the most you'll EVER contend with while using IBB is 7 others.

vishal

why are wireless contention ratios always lower than adsl?

MrPinK

The contention ratio by itself doesn't mean much, you have to take into consideration the amount of bandwidth they are sharing. With wireless it's usually 8 ppl sharing 1Mb (correct me if IBB are different), worst case is each gets 128k. For properly implemented dsl, the 50:1 share 10Mb, worst case is each gets 200k, but the chances of 50 ppl being on at the same time are a lot less than the full 8 being on wireless so it should always be greater than 200k. Having said that, eircom in their infinite wisdom have decided that 48 ppl should share 2Mb which gives a worst case of about 40Kb.

gandalf

At the moment I am trialing Ripwave in Ballinteer. When it works I can get 60kbps unfortuantely it is very erractic and loses signal a fair bit (haven't got a decent signal in two days!). Tried ringing them today but they are only available normal office hours which is not good.

This is a shame because I was hoping to be in a position to cancel my ISDN line. Unless things improve that is still not an option.

Gandalf.

SkepticOne

Originally posted by MrPinK
For properly implemented dsl, the 50:1 share 10Mb, worst case is each gets 200k, but the chances of 50 ppl being on at the same time are a lot less than the full 8 being on wireless so it should always be greater than 200k. Having said that, eircom in their infinite wisdom have decided that 48 ppl should share 2Mb which gives a worst case of about 40Kb.

AFAIK, it is 48 to every 512k not 2Mb. In Britain it is 50 to every 512k with BT's OpenWorld. I'm not sure what the ratio is in other countries. I doubt if there's may where it's 50 sharing a 10 Mb line. That would be very good indeed. It would be equivalent to a 1:2.5 ratio by normal standards.

MrPinK

Sorry yeah, it's 192 sharing the 2Mb line at the DSLAM. BT using 10Mb lines at their exchanges only means that the 50:1 will take a lot longer to kick in.

Mutant_Fruit

I thought netsource split an 8meg pipe between 48 ppl. (but that could be wrong).

At the moment I am trialing Ripwave in Ballinteer. When it works I can get 60kbps unfortuantely it is very erractic and loses signal a fair bit (haven't got a decent signal in two days!).

This ain't a reflection on IBB. Ripwave isn't even officially released. Try moving the ripwave box to a window facing same direction as tower, i hear they give better performance when they don't have to go through 4 walls in your house :-p

Sorry yeah, it's 192 sharing the 2Mb line at the DSLAM.

are you sure about this?

Mutant_Fruit

Looks like IBB are back in action on the Tallaght tower... check these speeds out. The slowish bit at start was when i was checking e-mails and browsing a bit, then i started downloading...

EDIT: between each vertical line represents one minutes worth of downloading

gandalf

Originally posted by Mutant_Fruit

This ain't a reflection on IBB. Ripwave isn't even officially released. Try moving the ripwave box to a window facing same direction as tower, i hear they give better performance when they don't have to go through 4 walls in your house :-p

Firstly it is a reflection on IBB this is a product they are releasing next month. Believe it or not tried the nearest window facing the tower and got a weak signal. However in one of the back rooms got a very good signal which was fine until a few days ago.

I have sent them a mail so I'd hope to have some answers tomorrow and hopefully this can be resolved soon. (but remember I am used to excellent UTV support so they have alot to live up to!).

Gandalf.

Mutant_Fruit

the reason they're beta testing is to find these problems. If it turns out that people at the limits of the range (like maybe you are) are getting unstable connections, then they'll not deliver ripwave to those homes. When its released your neibhour might be told they can't get ripwave... and its up to you wether you continue using it or not.