![]() |
Welcome to BroadbanterBanter. You are currently viewing as a guest which gives you limited access to view most discussions and other FREE features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload your own photos and access many other special features. Registration is fast, simple and absolutely free so please, join our community today. |
|
uk.telecom.broadband (UK broadband) (uk.telecom.broadband) Discussion of broadband services, technology and equipment as provided in the UK. Discussions of specific services based on ADSL, cable modems or other broadband technology are also on-topic. Advertising is not allowed. |
|
| Thread Tools | Display Modes |
#1
| |||
| |||
![]() Ticket number 19247892 has been open since 25th April and I am no nearer a solution. Will you please get your colleagues to stop prevaricating and take some effective action? TIA. Peter Crosland |
#2
| |||
| |||
![]() "Peter Crosland" wrote in message ... Ticket number 19247892 has been open since 25th April and I am no nearer a solution. Will you please get your colleagues to stop prevaricating and take some effective action? TIA. I have a feeling there is something wrong with the ticketing system. I have seen reports of people not having tickets answered or some closed automatically. Yet myself and others have not had a problem with them responding to tickets. Maybe it depends on the depth of the problem and perhaps they are answering the easy ones first. :-p |
#3
| |||
| |||
![]() Ticket number 19247892 has been open since 25th April and I am no nearer a solution. Will you please get your colleagues to stop prevaricating and take some effective action? TIA. I have a feeling there is something wrong with the ticketing system. I have seen reports of people not having tickets answered or some closed automatically. Yet myself and others have not had a problem with them responding to tickets. Maybe it depends on the depth of the problem and perhaps they are answering the easy ones first. :-p On this one they keep answering but not solving the problem to do with MAX DSL speeds. I am 99% sure the problem is the can of worms known as BT! The Americans would call it a crock! Peter Crosland |
#4
| |||
| |||
![]() On this one they keep answering but not solving the problem to do with MAX DSL speeds. I am 99% sure the problem is the can of worms known as BT! The Americans would call it a crock! Peter Crosland Max DSL via PlusNet and BT has driven me crazy recently. "Max DSL training" started on my line on May 3 and it has been a nightmare ever since. It is blindingly obvious from my router statistics that my line cannot support a download connection speed of more than 4 mbps but the brain dead BT training process insists on repeatedly trying speeds in the range of 4.6 to 6+ mbps despite numerous router reboots. The result is that my connection has been going up and down like a yoyo for the past 12 days. When will this insanity end? Alex Balfour |
#5
| |||
| |||
![]() "Alex Balfour" wrote in message ... On this one they keep answering but not solving the problem to do with MAX DSL speeds. I am 99% sure the problem is the can of worms known as BT! The Americans would call it a crock! Peter Crosland Max DSL via PlusNet and BT has driven me crazy recently. "Max DSL training" started on my line on May 3 and it has been a nightmare ever since. It is blindingly obvious from my router statistics that my line cannot support a download connection speed of more than 4 mbps but the brain dead BT training process insists on repeatedly trying speeds in the range of 4.6 to 6+ mbps despite numerous router reboots. The result is that my connection has been going up and down like a yoyo for the past 12 days. When will this insanity end? Alex Balfour I agree. BT's implementation of rate adaptive DSL appears to be somewhat broken on some less than perfect lines. The ISP's are suffering because of this. Also the fact that most ISP's now have strict caps or traffic shaping is due to the high backhaul costs BT charge. In irony the costs are kept high because OFCOM (the company meant to protect consumers etc) are keeping them high (to prevent BT undercutting the LLU providers) But for the exchanges that are never going to see LLU, the consumer suffers ![]() The insanity will never end, however it can be relieved by changing to an ISP that is not so incompetant and dishonest as Plusnet. Dan |
#6
| |||
| |||
![]() Alex Balfour wrote: It is blindingly obvious from my router statistics that my line cannot support a download connection speed of more than 4 mbps but the brain dead BT training process insists on repeatedly trying speeds in the range of 4.6 to 6+ mbps despite numerous router reboots. The result is that my connection has been going up and down like a yoyo for the past 12 days. When will this insanity end? when you get a better router, or clean up your extension wiring and filtering, or both. BT's kit sets a target SNR margin and your brain dead router determines the speed it can run at to meet that target margin. Clearly it gets it wrong. Phil |
#7
| |||
| |||
![]() "PhilT" wrote in message oups.com... Alex Balfour wrote: It is blindingly obvious from my router statistics that my line cannot support a download connection speed of more than 4 mbps but the brain dead BT training process insists on repeatedly trying speeds in the range of 4.6 to 6+ mbps despite numerous router reboots. The result is that my connection has been going up and down like a yoyo for the past 12 days. When will this insanity end? when you get a better router, or clean up your extension wiring and filtering, or both. BT's kit sets a target SNR margin and your brain dead router determines the speed it can run at to meet that target margin. Clearly it gets it wrong. The router does nothing of the sort it's all at the exchange end. It's up to the BT training process to monitor the SNR and the number of disconnects at the customer end and adjust the line speed to achieve that magic 6db noise margin. Phil |
#8
| |||
| |||
![]() WCZ wrote: "PhilT" wrote in message oups.com... BT's kit sets a target SNR margin and your brain dead router determines the speed it can run at to meet that target margin. Clearly it gets it wrong. The router does nothing of the sort it's all at the exchange end. It's up to the BT training process to monitor the SNR and the number of disconnects at the customer end and adjust the line speed to achieve that magic 6db noise margin. wrong. Link establishment is a negotiation between the CPE and the DSLAM where the DSLAM signals the target margin to the CPE and the latter then goes about finding a set of bin/bit combinations that fit the target margin. BT's kit can only ever send a different target margin and then cooperate in the training, it can't set a speed directly when in rate adaptive mode. The BT training process that monitors disconnects etc will initially turn on interleaving and then increase target SNR margin. If the margin is still sat at 6 dB then there has been no intervention by the BT DLM kit to increase the target. Phil |
#9
| |||
| |||
![]() Alex Balfour wrote: I don't have any extension wiring and the only device currently connected to my phone line is a Netgear DG834 router. occasionally having a microfilter on the line heps its stability, even though the ADSL port is pass through it puts some components across the line. If you believe that my router is the problem which (preferably wired) router would you recommend? what I'm saying is that your router is the thing that negotiates the connection and sets up the allocation of bits into frequency bins and hence the speed. If this is very unstable then maybe another device would do better. The Belkin 7633 gets a good press as it has some CLI commands to tweak the SNR margin, so if your connection is flakey you can aim for a higher SNR margin and lower speed. The DG834 has a TI chipset, the Belkin has Broadcom. Older speedtouches have Conexant. Different chipsets get on better with different lines and often perfrom best if they match the DSLAM chipset. The Netgear is infamous for its drifting SNR values, where the value declines over time. If this isn't just a GUI issue it will lead to retrains when the SNR fals. Phil |
#10
| |||
| |||
![]() "PhilT" wrote in message oups.com... WCZ wrote: "PhilT" wrote in message oups.com... BT's kit sets a target SNR margin and your brain dead router determines the speed it can run at to meet that target margin. Clearly it gets it wrong. The router does nothing of the sort it's all at the exchange end. It's up to the BT training process to monitor the SNR and the number of disconnects at the customer end and adjust the line speed to achieve that magic 6db noise margin. wrong. Link establishment is a negotiation between the CPE and the DSLAM where the DSLAM signals the target margin to the CPE and the latter then goes about finding a set of bin/bit combinations that fit the target margin. So you're saying that it's my router that sets the speed and deals with all the training? How can it do this without additional software? Why does it take 10 days to train then when surely the router could just keep dropping the rate until it gets a reliable connection? BT's kit can only ever send a different target margin and then cooperate in the training, it can't set a speed directly when in rate adaptive mode. The BT training process that monitors disconnects etc will initially turn on interleaving and then increase target SNR margin. If the margin is still sat at 6 dB then there has been no intervention by the BT DLM kit to increase the target. Interleaving sucks for gaming so I hope that isn't a default. Phil |
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Display Modes | |
|
|
![]() | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FAO Plusnet support | Jon Parker | uk.telecom.broadband (UK broadband) | 9 | April 16th 05 07:23 PM |
A question for Plusnet support. | Bob Hopeless | uk.telecom.broadband (UK broadband) | 6 | April 16th 05 06:23 PM |
Plusnet ping problems? | Michael Rodgers | uk.telecom.broadband (UK broadband) | 15 | January 2nd 05 02:25 PM |
Ping PlusNet | Spin Dryer | uk.telecom.broadband (UK broadband) | 19 | January 2nd 05 11:34 AM |