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Message 1 of 3

Several resyncs , varying connection speed

Hi there,


Infinity 2 customer for 3 or 4 years now, no real issues.


Always synced around 6.6db and around 75000 downstream for the first few years. With the recent July firmware update, the noise downstream dropped to 6.0 on connection and then down to around 5.6db after a couple of days, with a small increase in sync to around 78500.


A few days ago, I noticed an increase in the maximum data rate, and yesterday the max data rate was at 83000. Around 2pm, the router synced at 79995, which I believe is the maximum connection for infinity two. However, around half an hour later, the router resynced again at 72000, which was a big dip. Both times, the noise and maximum data rate where pinging up and down a lot. Tried a couple of router reboots and it still synced at the lower value. Again, after another half hour or so, it resynced at the higher speed again, and the maximum data rate and noise seemed to settle down to 83000 and 6.6 db.


At some point in the evening, the maximum rate dropped back to about 78500. Did another router reboot and it resynced at 78300, which was pretty normal. All seemed fine last night, and when I woke up at 6 this morning it had remained the same overnight. 


At around 6.25, it resynced itself again, this time the maximum data increased back over 80000, but as you can see it has synced at 68000 (have just done aother reboot to check resync value)


I had a few issues (with another service, not my broadband) on Sunday, which nessecitated a few router resets - I'm guessing a few router resets then and yesterday might have introduced DLM on the line?. 


But can anyone suggest what was happening yesterday with the resyncs at the higher then lower speed?


Thanks in advance for any advice or suggestions.




1. Product name:BT Home Hub
2. Serial number:+068343+NQ35228890
3. Firmware version:Software version (Type A) Last updated 09/07/17
4. Board version:BT Hub 5A
5. DSL uptime:0 days, 00:02:36
6. Data rate:19999 / 67874
7. Maximum data rate:23773 / 80396
8. Noise margin:6.5 / 6.0
9. Line attenuation:9.1 / 11.7
10. Signal attenuation:9.0 / 11.7
11. Data sent/received:0.8 MB / 2.3 MB
12. Broadband
13. BT Wi-fi:Yes
14. 2.4 GHz Wireless network/SSID:BTHub5-S796
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-S796
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:34:8a:ae:80:11:6c
24. Modulation:G.993.2 Annex B
25. Software variant:AA
26. Boot loader:1.0.0


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Message 2 of 3

Re: Several resyncs , varying connection speed

Here's the wholesale page info:


Telephone Number  on Exchange MORECAMBE is served by Cabinet 11


Featured Products

Downstream Line Rate(Mbps)

Upstream Line Rate(Mbps)

Downstream Handback Threshold(Mbps)

WBC FTTC Availability Date

WBC SOGEA Availability Date

WBC FTTC 18x2 Provide Availability

WBC FTTC 18x2 Sim Availability

Left in Jumper


Featured Products

Downstream Line Rate(Mbps)

Upstream Line Rate(Mbps)

Downstream Range(Mbps)

WBC FTTP Availability Date


ADSL Products

Downstream Line Rate(Mbps)

Upstream Line Rate(Mbps)

Downstream Range(Mbps)

Availability Date


Left in Jumper

Other Offerings


Availability Date


Premise environment


VDSL Range A (Clean)8074.2201966.5Available--------
VDSL Range B (Impacted)8057.42017.239.8Available--------
FTTP on Demand33030--Available--------
WBC ADSL 2+Up to 18--16 to 19.5Available--------
WBC ADSL 2+ Annex MUp to 18Up to 1.516 to 19.5Available--------
ADSL MaxUp to 8--7 to 8Available--------
WBC Fixed Rate2----Available--------
Fixed Rate2----Available--------
VDSL Multicast------Available--------
ADSL Multicast------Available--------
Bridge TapN       
Last Test Date18-05-2017       





For all ADSL and WBC Fibre to the Cabinet (VDSL or services, the stable line rate will be determined during the first 10 days of service usage.

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Message 3 of 3

Re: Several resyncs , varying connection speed

Finally, the results from the wholesale speed test. Upload seems quite low, can easily get to high 18 Mbps using, but the download seems consistent on both sites.



Results Image not loaded



1. Best Effort Test: -provides background information.

 Download Speed
 63.48 Mbps
0 Mbps65.7 Mbps
Max Achievable Speed

 Download speedachieved during the test was - 63.48 Mbps
 For your connection, the acceptable range of speedsis 40 Mbps-65.7 Mbps .
 Additional Information:
 IP Profile for your line is - 65.7 Mbps

2. Upstream Test: -provides background information.

 Upload Speed
 13.83 Mbps
0 Mbps20 Mbps
Max Achievable Speed

Upload speed achieved during the test was - 13.83Mbps
 Additional Information:
 Upstream Rate IP profile on your line is - 20 Mbps

We were unable to identify any performance problem with your service at this time.
It is possible that any problem you are currently, or had previously experienced may have been caused by traffic congestion on the Internet or by the server you were accessing responding slowly.
If you continue to encounter a problem with a specific server, please contact the administrator of that server in the first instance.


Please visit the FAQ if you are unable to understand the test results.

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