ADSL maximum speed

**Thetyim** · 11-04-2009, 09:36 PM

TOT have brought out a new scale of charges for ADSL
so it's time to change my package.

These are my modem stats.
I guess I am about 3.5 km from the exchange.
What maximun speed should I go for ?

Line attenuation is fairly constant and US margin is steady but my DS margin varies from 1 to 12
I took the snapshot during last nights thunderstorm
It was still working with a DS margin of 1

**lom** · 11-04-2009, 11:28 PM

What speeds can you get in the new packages and how much are they?
ToT website seems to be down..

**Thetyim** · 11-04-2009, 11:57 PM

- 2M/512Kbps 490 บาท
- 3M/512Kbps 590 บาท
- 4M/512Kbps 790 บาท

That's for existing customers

**Gerbil** · 12-04-2009, 12:11 AM

^ can't seem to find the rates for TRUE anywhere (their website is shit and out of date) but I'm paying 1150 for 2.5Mbps/512Kbps.

**lom** · 12-04-2009, 12:20 AM

With 3.5km to the DSLAM , I would go for the 3Mbit package.

**ChiangMai noon** · 12-04-2009, 12:21 AM

i haven't upgraded my tot package yet, but after a year of torrent download speeds being capped at 160 down and 35 up,my speeds mysteriously increased a few days ago to 220 down and 70 up.
this after week or so of generally awful internet connections.

also video and radio is suddenly streaming unbuffered after a few months of rubbish.

**ChiangMai noon** · 12-04-2009, 12:22 AM

how do you find out where the DSLAM is?

**lom** · 12-04-2009, 01:15 AM

^ Follow your telephone lines until they go into a smallish house

**Thetyim** · 12-04-2009, 09:17 AM

Originally Posted by ChiangMai noon

how do you find out where the DSLAM is?

What is your DS attenuation and what modulation are you using ?

**Thetyim** · 12-04-2009, 09:45 AM

LOM, can you explain this ?

My DS margin has dropped to 1 again this morning but a local speed test still shows
1319/414 kbps which is the max I can expect on this package.

Is my modem giving a false figure ?

**peterpan** · 12-04-2009, 10:06 AM

Originally Posted by lom

^ Follow your telephone lines until they go into a smallish house

Look for one like this.

**lom** · 12-04-2009, 10:45 AM

Originally Posted by Thetyim

Is my modem giving a false figure ?

No, I think you misinterpret what the figures means.
The noise margin figures are target noise margins set by the modem when negotiating with the DSLAM and does not directly reflect phone line quality.

**Thetyim** · 12-04-2009, 10:51 AM

Originally Posted by lom

No, I think you misinterpret what the figures means.

Thanks.
I have re-booted the modem and it has shot up to 21 now

I will take your advice and go for the 3m package

**lom** · 12-04-2009, 11:00 AM

^ The 4MBit package may also work (your line attenuation is not bad) but you can always upgrade if you find the 3Mbit is stable.
You can see in the modem status page if the connection stays fixed at 3072/512 or
occasionally drops down (2816/512 for instance).

**Thetyim** · 12-04-2009, 11:05 AM

I don't think 4mb will be an option.
Attenuation will increase by 6db per mb which will take me past the limit

**lom** · 13-04-2009, 12:19 AM

Originally Posted by Thetyim

Attenuation will increase by 6db per mb which will take me past the limit

I don't think attenuation is a function of your download speed but merely based on your cable length and quality.

A downstream attenuation of 49dB allows for a downstream speed of ~5MBit.

**Thetyim** · 13-04-2009, 09:14 AM

Originally Posted by lom

I don't think attenuation is a function of your download speed but merely based on your cable length and quality.

Yes it is basically dependant on cable length but when you increase the line speed you start using higher frequencies and higher frequencies are more likely to be attenuated.
I have checked some more websites and the 6dB figure I quoted seems to be a bit high, site sites are saying only 1dB increase.

**Thetyim** · 21-04-2009, 04:49 PM

I got my ADSL package changed this morning.
From application to change over took 2 hours, pretty good service I reckon.
I now have a 3072/512 line for just 590 baht per month.
Thats twice the speed and 100 baht less than my old package.

It's working well and line attenuation has not increased at all, so bollocks to googling info in the future I will just ask Lom.

**Marmite the Dog** · 21-04-2009, 05:33 PM

Originally Posted by Thetyim

so bollocks to googling info in the future I will just ask Lom.

Very Scampyesque of you.

**Gerbil** · 21-04-2009, 05:38 PM

Well True have doubled my connection speed to 5Mbps. I didnt even call and complain. Downside is that it seems to lose the carrier more often.

**JoGeAr** · 25-04-2009, 05:50 PM

We've got this on our BigPond package in Brisbane.

Ultimate HomeLine and broadband bundle [Cable] or [ADSL]
Phone Package: Telstra Homeline Ultimate HomeLine Ultimate - Home Phones & Plans - Telstra
Broadband Package: Bigpond Cable Extreme Liberty 25GB http://my.bigpond.com/internetplans/...rs/default.jsp Monthly Access Fee: $109.95
Speed: Speeds up to 30Mbps (download)/1000kbps (upload) are available in selected areas of Melbourne and Sydney. Other areas have speeds up to 17Mbps/256kbps.

**Thetyim** · 25-04-2009, 05:56 PM

Originally Posted by JoGeAr

Other areas have speeds up to 17Mbps/256kbps.

Why are they so stingy with the UL speed ?

**JoGeAr** · 25-04-2009, 07:06 PM

No idea. But it's never been an issue.

**Takeovers** · 25-04-2009, 07:20 PM

I am waiting anxiously for my new package as well.

Right now I can only have 3Mbit/s DS because of the big distance to the DSLAM. They have now built DSLAMs in the streets with a distance of app. 150m to my house. I will get a package with 50MBit/s DS and 1Mbit/s US. That speed is only available in a package with IP-TV with more than 100 channels including channels like History Channel plus a lot of PayTV packages optional.

The whole package including 2 Telephone lines and flatrate for national telephone (without mobile), IP-TV, and DSL flatrate will cost me app. 60 Euro.
Well I hope the install will go through, there are still a few glitches in the system.

I could have used 25Mbit/s but the difference is just 3,50Euro so I opted for 50. Actually I would not really need the IP-TV because we have cable and satellite but I may get a football package so cheap with IP-TV that this is actually the cheapest option.

By the way on my satellite there are loads of erotic channels in arabic language. And a nice documentary channel of Chinese State TV CCTV in english.

Thread: ADSL maximum speed

Thread Tools

Display

ADSL maximum speed

Thread Information

Users Browsing this Thread

Posting Permissions