View Full Version : Can BT split or lower the power to a isdn line ?
I have been having major lag problems in tfc for the last 3 weeks or so , its ok leaving a resupply but as soon as any action kicks off its lagsville city Arizona for me .
Ive tried 2 different isp's and 2 different computers , i have also changed my config settings to various different rates , the strange thing is my ping , choke and ploss are all fine ? but i still lag to buggery.
So the only thing i can think of now is that most be my actual phone line
When i was on a 56k modem BT split my line, making any kind of gaming impossible , but im pretty sure that you cant split isdn ?
Anyone know anything at all about this ?
Lt. Sex Machine
21-01-2003, 12:46
You are talking about DACS - using an analogue pair to make two phone lines, which involves them fitting a box to make the whole thing work.
ISDN has to have a pair for each channel so they must have removed the DACS from the line before the ISDN was fitted.
However, the reason the line was split in the first place was probably because there were no suitable pairs of a good enough quality to sustain a line, which does make me wonder how they managed to find any good pairs to form the ISDN connection as obviously you need two pairs to get the channels.
Phone BT and ask them to run a test on it, though ISDN tends to work fine or not at all, there isn't any in-between in my experience.
Silenced
21-01-2003, 12:47
I had that els :/
caused me to miss a few important matches :/ (Vitality top10 thing v DW for 187 to name one)
it was fine in resup... I left resup... bam it just lagged to **** and got cl_flushentitybollocks
Sometimes it would be fine, but other times it woud l**** right up. This was on BT ISDN2e - It went away after a while though - and I got DSL a few weeks back so I never looked into it further :/
Unfortunatly LSM i know all about Bt's line checks , when my 56k was split they told me it wasn't , when i asked for an engineer to come round and look, he even told me that it wasn't split . What they didn't know was that a friend of mine who works for BT had done some secret checks and had found out that my line was split (Dacs).
I was then offered isdn for nothing which was nice :P
Ah well time to phone BT , what joy.
Originally posted by Silenced
I had that els :/
it was fine in resup... I left resup... bam it just lagged to miff and got cl_flushentitymarleeeenes
Sometimes it would be fine, but other times it woud lgosh right up. This was on BT ISDN2e - :/
That the strange thing though , i dont get any cl_flushentitymarleeeenes or any ploss which i would have thought i would of if it was my phone line being borked !
Lt. Sex Machine
21-01-2003, 13:13
Naughty.
I've always found the site engineers to be very honest open and knowledgable, I quite often have to call them into work so usually try and pick their brains to see if there are any gems of knowledge in there.
DACS is a bit of a sore point with them as nobody likes to have it yet they are not obliged to supply analogue lines that will sustain the kind of transfers internet people demand. Bit of a bum deal for us but there you go, I cannot get DSL as the lines they laid to my home were during the nasty aluminium era, which is also responsible for a lot of the DACS that were fitted (at £400 for the splitter alone - way cheaper than digging the roads up and replacing dodgy cable).
Good luck with it :)
ROFL!1! the kind man from BT home highway has told me my line has been dacs.
Lt. Sex Machine
21-01-2003, 13:30
Wow that's news to me I was told they had no choice but to convert the line back to pairs before fitting ISDN.
:confused:
To add
BT phone me back to tell me they have done a line test and there's nothing wrong with the line .
well thats strange , as your technical support staff at Home Highway have just told me that my line has been dacs!
They did ? erm i'll call you back sir.
tara
Lt. Sex Machine
21-01-2003, 14:15
The plot thickens...
One thought, even if the line is DACSed (I dont reckon it is myself) then it shouldn't affect your ISDN, a digital connection with either work or not work, it's not like analogue where line noise cripples a connection.
Just a thought but is it possible your computer or TFC have had a funny turn?
GreyWolf
21-01-2003, 14:22
I had a prob like that on 56k except i did have a huuuuuuge ping. To fix it i disconnected the phone line from me comp and plugged it into a phone. Using the phone downstairs (diff number) rang the number i use for net. Make sure you answer it and leave it connect for a few seconds. Then ring from the line you use for the net to your other line and answer.
It was just a case of noise in the line, buggers everything up and like you, BT said there wasn't a fault on the line.
Hope it works :)
Iv'e used 2 different computers though LSM , and its the same on both .
Its the same copy of halflife and the same graphics card gf3ti500 installed in both.
Lt. Sex Machine
21-01-2003, 14:34
Ah yes so you said in your original post, I twigged about two ISPs but not the computers.
How is your computer for downloading stuff, is there any evidence of inconsistant rates there?
If you have XP then use the network monitor (CTRL ALT DEL) to see how it looks.
Im on win2k , download rates seem to be fine , but i told BT they were poor as couldn't be bothered to try and explain lag in tfc to them.
I guess the only other common factor here is my gf3ti500 ?
The Bt guy did ask me what my connection rate was (64k) but as i explained to him it would say 64k whatever , to which he agreed.
Lt. Sex Machine
21-01-2003, 14:58
If it were anything other than a connection issue then I would imagine you could prove it one way or the other by setting up each of your machines in turn as a LAN server and playing on it to see what happens.
It's not beyond all possibility that it could be something like your graphics card like you say.
If you are on 2k then you can use the console to monitor your net connection which will give the actual bitrate and not just the assumed rate, lot of fannying around if it can be avoided mind.
GreyWolf
21-01-2003, 18:20
ya tried what i said? Coz it sounds exacly the same. Downloads were fine, webbys came up ok and irc didn't lag. Was just TFC that was shafted :|
Not yet GW , still waiting for BT to get back to me .
Try an IP trace to a couple of servers that are particularly bad, see if there's one hop that has a particularly poor ping, if it recurs could be a problem with that particular router. Most likely to be first or 2nd hop if most tfc servers are poor.
greg2302
21-01-2003, 19:07
Dunno if you can split ISDN or not but are you using the USB port for your connection or a dedicated ISDN modem ? My ISDN modem cost under £20 and pings are around a heavenly 70-80 !
USB port is potentially much slower.
The thing is ,that 3 weeks ago everything was fine , i haven't changed anything at all , its just gone pap on me .
greg2302
21-01-2003, 19:22
That's a b*gger mate, I'd give BT dogs abuse ! :)
Silenced
21-01-2003, 20:01
I had exactly the same thing
happend on every isp I tried :/
it just cleared its self after a while ;D
[DW]LoneGun
21-01-2003, 20:29
we had a problem a few weeks back where there was noise on the line causing my isdn to drop intermittantly, and i got high pings, low dl speeds etc. We got an engineer round and he put a new external line in for us and it sorted the problem.
vBulletin® v3.7.4, Copyright ©2000-2008, Jelsoft Enterprises Ltd.