Did the BT chaps use there own PC and router/modem to do there test at your end ?
can you copy and paste your routers details on to this forum ?.
Is there anything in your routers log ?.
Is your router connected 24/7 ?.
Does your router re sync a lot ?.
Is there any noise on your phone or can you hear any other people in the back ground (cross talk).
BT used their own router and laptop with the same results. The router is a Netgear DG834G v.2. firmware v4.01.06, PPoA, wireless 54Mbps connection. There's nothing in the log that shows a problem - I've pasted the log at the end of this post. The router is on 24/7 usually, except this weekend I tried turning it off overnight as advised in the BT video, even though the line finished training months ago, supposedly. It usually only resync's a few times after rebooting - starts to sync at c.7000 and comes down to c.2000. There's no crosstalk on the phone. BT engineer checked this, and I wouldn't expect any with the router plugged into the faceplate and therefore isolated from the internal wiring - cordless phone base station is plugged into an internal extension.
bRAS (IP rate). http://www.kitz.co.uk/adsl/btwperformancetest.htm
Does this occur at a particular time of day? Does it co-incide with lights being turned on etc.
Here are a couple of BRAS profiles from recent BT tests:
06.51 20061123
IP profile for your line is - 1500 kbps
DSL connection rate: 448 kbps(UP-STREAM) 2144 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 1291 kbps
08.55 20061126
IP profile for your line is - 135 kbps
DSL connection rate: 448 kbps(UP-STREAM) 7104 kbps(DOWN-STREAM)
Actual IP throughput achieved during the test was - 84 kbps
The sync rate and speed do not drop at any particular time of day. If I reboot the router, it will usually sync at c.7000 for a few days with speeds of no more than 2500, sync will then drop to c.3000, speed c.2500 for a few more days. Over the weekend it went right down - see second BRAS profile above, and this morning it's gone up to 2112, with speed c.1300, where it has in the past stayed for days, weeks at a time. Changes don't coincide with use of electrical equipment - at the moment the router is in a completely empty room (it's being redecorated) with no electrical equipment at all.
Once youve eliminated the router being the cause then... I think the culprit is probably going to be "Noise" from interferance.
Does this mean low SNR - currently 12db up and down? Does it mean interference on the phone line between the master socket and the exchange? Or does it mean interference from electrical equiment inside the house, which I thought has been eliminated. I managed to sync for months at 3200, speeds c.2500 with the router plugged into an extension socket beside the computer, and surrounded by a mass of mains and other wiring behind the computer desk.
Alan
Log from Sunday to today - I've deleted my IP address:
Sun, 2002-09-08 12:00:43 - Initialize LCP.
Sun, 2002-09-08 12:00:43 - LCP is allowed to come up.
Sun, 2002-09-08 12:00:51 - CHAP authentication success
Sun, 2002-09-08 12:00:54 - Send out NTP request to time-g.netgear.com
Sat, 2006-11-25 10:29:06 - Receive NTP Reply from time-g.netgear.com
Sat, 2006-11-25 10:31:01 - Administrator login successful - IP:
Sat, 2006-11-25 10:28:12 - Router start up
Sat, 2006-11-25 15:34:32 - Administrator login successful - IP:
Sat, 2006-11-25 17:22:49 - Administrator login successful - IP:
Sat, 2006-11-25 21:33:11 - Administrator login successful - IP:
Sun, 2006-11-26 08:46:23 - Administrator login successful - IP:
Sun, 2006-11-26 09:02:16 - Administrator login successful - IP:
Sun, 2006-11-26 09:02:34 - LCP down.
Sun, 2006-11-26 09:02:35 - Initialize LCP.
Sun, 2006-11-26 09:02:35 - LCP is allowed to come up.
Sun, 2006-11-26 09:02:41 - CHAP authentication success
Sun, 2006-11-26 09:05:56 - LCP down.
Sun, 2006-11-26 09:05:57 - Initialize LCP.
Sun, 2006-11-26 09:05:57 - LCP is allowed to come up.
Sun, 2006-11-26 09:06:01 - CHAP authentication success
Sun, 2006-11-26 09:07:50 - LCP down.
Sun, 2006-11-26 09:07:51 - Initialize LCP.
Sun, 2006-11-26 09:07:51 - LCP is allowed to come up.
Sun, 2006-11-26 09:07:57 - CHAP authentication success
Sun, 2006-11-26 09:14:58 - LCP down.
Sun, 2006-11-26 09:15:02 - Initialize LCP.
Sun, 2006-11-26 09:15:02 - LCP is allowed to come up.
Sun, 2006-11-26 09:15:06 - CHAP authentication success
Sun, 2006-11-26 09:18:14 - LCP down.
Sun, 2006-11-26 09:18:15 - Initialize LCP.
Sun, 2006-11-26 09:18:15 - LCP is allowed to come up.
Sun, 2006-11-26 09:18:20 - CHAP authentication success
Sun, 2006-11-26 11:32:19 - Administrator login successful - IP:
Sun, 2006-11-26 15:38:38 - LCP down.
Sun, 2006-11-26 15:38:39 - Initialize LCP.
Sun, 2006-11-26 15:38:39 - LCP is allowed to come up.
Sun, 2006-11-26 15:38:47 - CHAP authentication success
Sun, 2006-11-26 15:39:03 - Loss of synchronization :1
Sun, 2006-11-26 16:55:27 - Administrator login successful - IP:
Sun, 2006-11-26 23:08:58 - Administrator login successful - IP:
Mon, 2006-11-27 07:43:55 - Administrator login successful - IP:
Mon, 2006-11-27 12:43:46 - Administrator login successful - IP:
Mon, 2006-11-27 15:00:04 - Administrator login successful - IP:
Mon, 2006-11-27 15:00:54 - LCP down.
Mon, 2006-11-27 15:00:55 - Initialize LCP.
Mon, 2006-11-27 15:00:55 - LCP is allowed to come up.
Mon, 2006-11-27 15:01:01 - CHAP authentication success
Mon, 2006-11-27 15:08:02 - LCP down.
Mon, 2006-11-27 15:08:06 - Initialize LCP.
Mon, 2006-11-27 15:08:06 - LCP is allowed to come up.
Mon, 2006-11-27 15:08:10 - CHAP authentication success
Mon, 2006-11-27 15:08:18 - LCP down.
Mon, 2006-11-27 15:08:18 - Initialize LCP.
Mon, 2006-11-27 15:08:18 - LCP is allowed to come up.
Mon, 2006-11-27 15:08:23 - CHAP authentication success
Mon, 2006-11-27 23:00:21 - Administrator login successful - IP:
Tue, 2006-11-28 07:15:30 - Administrator login successful - IP:
Tue, 2006-11-28 08:29:06 - Send out NTP request to time-g.netgear.com
Tue, 2006-11-28 08:29:09 - Receive NTP Reply from time-g.netgear.com
Tue, 2006-11-28 09:23:38 - Administrator login successful - IP:
Tue, 2006-11-28 11:04:38 - Administrator login successful - IP: