Big drop in sync rate

[campdave]

hi all,

Hoping for some advice on my connection.

Always connected at maximum rate for line (79995) and maximum data rate has always been in the range 80500 to 84000).

Two nights ago, the line resynced and the upload sync changed from 20000 to 19999.

Last night, the line re-synced and my down rate is now syncing at just above 70000. Have tried restarting the modem, but it stays connecting at the same rate. There has been a jump in the maximum data rate to 85000.

Any advice on what is happening - running the speed checker gives me 65.5Mbps which is the minimum standard for my line, previously I would have been getting 73-74 Mbps.

Line sounds fine after running quiet line test.

There has been a lot of work in our area installing new cabinets, so I'm putting it down to that in the first instance - though not sure why this would cause such a significant drop in sync speed.

Stats from my router following reboot this morning

4. Board version:	BT Hub 5A
5. DSL uptime:	0 days, 00:43:24
6. Data rate:	19999 / 70895
7. Maximum data rate:	23147 / 85375
8. Noise margin:	6.3 / 6.1
9. Line attenuation:	8.5 / 10.6
10. Signal attenuation:	8.5 / 10.6
11. Data sent/received:	113.0 MB / 1.0 GB
12. Broadband username:	bthomehub@btbroadband.com
13. BT Wi-fi:	No
14. 2.4 GHz Wireless network/SSID:	BTHub5-92P7
15. 2.4 GHz Wireless connections:	Enabled (802.11 b/g/n (up to 144 Mb/s))
16. 2.4 GHz Wireless security:	WPA2
17. 2.4 GHz Wireless channel:	6
18. 5 GHz Wireless network/SSID:	BTHub5-92P7-5ghz
19. 5 GHz Wireless connections:	Enabled (802.11 a/n/ac (up to 1300 Mb/s))
20. 5 GHz Wireless security:	WPA2
21. 5 GHz Wireless channel:	Automatic (Smart Wireless)
22. Firewall:	Default
23. MAC Address:	a0:1b:29:52:d5:62
24. Modulation:	G.993.2 Annex B
25. Software variant:	AA
26. Boot loader:	1.0.0

[imjolly]

have you checked the logs filtered using WAN to see if there has been connection problems recently

[campdave]

Thanks for your post.

Doesn't seem to be any issues in the WAN - router had been up for around 14 days previously to first re-sync, before that 14 days it had been up for 60 days and was only reset because the 5GHz wireless stopped responding.

This was the message that seemed to start the re-sync. The amount of uploaded and downloaded data didn't change, so it seemed to be purely a resync rather than a reboot.

01:38:17, 03 Jul.	(1411429.390000) CWMP: Server URL: https://pbthdm.bt.mo; Connecting as user: ACS username
01:38:17, 03 Jul.	(1411429.380000) CWMP: Session start now. Event code(s): '4 VALUE CHANGE'

[imjolly]

has your firmware just been updated?  if so maybe  wait a few days see if it settles and if not try 1 factory reset using recessed button on back and see if that helps

[campdave]

Thanks - firmware the same since March 2019. Will wait as you say.

[campdave]

Tried tech support on facebook who asked me to do a factory reset as advised in this thread, still connecting under 71000 compared to the 79995 over the last few years.

Will now wait and see what happens, not keen to keep restarting in case there is any DLM on the line.

As it's within the stated minimum for the line, customer support aren't massively interested, which is fair enough, but also frustrating.

Interestingly, while looking at various things yesterday I didn't realised that the Gfast 250 option was available in our area, and it's only a few quid more expensive than what I'm paying at the moment, so if this does not return to normal in the next few weeks I may upgrade anyway.

3. Firmware version:	Software version 4.7.5.1.83.8.264 (Type A) Last updated 01/03/19
4. Board version:	BT Hub 5A
5. DSL uptime:	0 days, 00:11:47
6. Data rate:	19999 / 70895
7. Maximum data rate:	23005 / 85091
8. Noise margin:	6.3 / 6.0
9. Line attenuation:	8.6 / 10.6
10. Signal attenuation:	8.5 / 10.6
11. Data sent/received:	3.9 MB / 114.9 MB
12. Broadband username:	bthomehub@btbroadband.com
13. BT Wi-fi:	Yes
14. 2.4 GHz Wireless network/SSID:	BTHub5-92P7
15. 2.4 GHz Wireless connections:	Enabled (802.11 b/g/n (up to 144 Mb/s))
16. 2.4 GHz Wireless security:	WPA2
17. 2.4 GHz Wireless channel:	Automatic (Smart Wireless)
18. 5 GHz Wireless network/SSID:	BTHub5-92P7-5Ghz
19. 5 GHz Wireless connections:	Enabled (802.11 a/n/ac (up to 1300 Mb/s))
20. 5 GHz Wireless security:	WPA2
21. 5 GHz Wireless channel:	Automatic (Smart Wireless)
22. Firewall:	Default
23. MAC Address:	a0:1b:29:52:d5:62
24. Modulation:	G.993.2 Annex B
25. Software variant:	AA
26. Boot loader:	1.0.0