DSL link keeps disconnecting

[Burnedrope]

For the past 6-7 weeks or so I've experienced a much higher than usual amount of network drops.

Prior to this my router/network would have an uptime of 14 days or more before it rebooted which is something I think is fairly typical with BT. It almost always happened at night so really it was of no inconvenience.

I had been using a third-party router pretty much from the start of my contract with BT but after 2 weeks of these disconnects cropping up, when it became clear something weird was going on, I put the BT-supplied homehub router back, but saw no noticeable improvement.

Upon checking the logs these are being recorded as "DSL Link Down" events. I've texted the diagnostics bot numerous times but it just says my network connection is performing well and asks if I want to refresh my connection.

(I've pasted entries from the log .csv file showing the number of network disconnects - it's not terminal but compared to my previous experience it is a marked change. You can ignore the one on 14th Dec as that is when the router took a firmware update)

I have a contract which provides me with an EE broadband backup device but, to be quite honest with you, the network disconnect usually sorts itself out by the time the EE backup kicks into gear. Obviously much more suited as an option for longer downtimes.

I'm reluctant to call BT support/arrange an engineer visit since they'll be rushed off their feet over the next few weeks what with Xmas/NYE and my issue is not life or death so I'd rather not burden them with my issue until the new year period is over.

Is there anything I could do in the meantime? I'm more than happy to buy a new RJ11 if any of you think that would help. What about the master socket? Is that something I can/should replace?

Technical details from my router:

Product code:Hub
Serial number:+091298+2307005740
Firmware version:v0.44.00.04123-BT
Firmware updated:Sat Dec 14 06:36:37 2024
Board version:R01
GUI version:1.80 11_07_2023
DSL uptime:0 days,00 Hours23 Mins03 Secs
Data rate:7.492 Mbps / 40 Mbps
Maximum data rate:7.492 Mbps / 43.692 Mbps
Full Fibre (FTTP) Mode:On
Noise margin:6.0 / 7.3
Line attenuation:11.1 / 25.4
Signal attenuation:11.1 / 34.9
VLAN id:101
Upstream error control:Off
Downstream error control:Off
Data sent / received:2.7 MB Uploaded / 16.8 MB Downloaded
Broadband username:bthomehub@btbroadband.com
Public Wi-fi status:Not active
Wireless security:WPA2
Wireless mode:Mode 1
Firewall:On
MAC address:04:70:*********
Software variant:-
Boot loader: 0.1.7-BT (Thu Nov 30 09:45:22 2017)

Example of frequency and time of disconnects:

21:13:52	17 Dec. DSL Link Down: duration was 10948 seconds
18:08:37	17 Dec. DSL Link Down: duration was 175439 seconds
17:22:28	15 Dec. DSL Link Down: duration was 65469 seconds
23:08:41	14 Dec. DSL Link Down: duration was 58688 seconds
23:09:02	13 Dec. DSL Link Down: duration was 12644 seconds
19:23:44	13 Dec. DSL Link Down: duration was 59944 seconds
02:40:46	13 Dec. DSL Link Down: duration was 471146 seconds
15:46:11	07 Dec. DSL Link Down: duration was 226 seconds
15:40:15	07 Dec. DSL Link Down: duration was 81126 seconds
17:05:43	06 Dec. DSL Link Down: duration was 249310 seconds
19:47:49	03 Dec. DSL Link Down: duration was 38271 seconds
09:02:52	03 Dec. DSL Link Down: duration was 119833 seconds
23:00:43	01 Dec. DSL Link Down: duration was 18686 seconds
17:44:47	01 Dec. DSL Link Down: duration was 209337 seconds
07:33:40	29 Nov. DSL Link Down: duration was 20500 seconds
01:49:28	29 Nov. DSL Link Down: duration was 893877 seconds
17:22:48	18 Nov. DSL Link Down: duration was 89504 seconds
16:28:49	17 Nov. DSL Link Down: duration was 163543 seconds
19:00:17	15 Nov. DSL Link Down: duration was 92517 seconds
17:15:10	14 Nov. DSL Link Down: duration was 93534 seconds

[mod edit: personal info removed]

[Ali_A]

Hi @Burnedrope 

Welcome to the Community! 

I notice you're getting your broadband through Full Fibre (FTTP - Fibre to the Premises), so you'll have an Optical Network Terminal (ONT) in your home to set up your hub, instead of a normal master socket.

Have you tried resetting this at all? 

Ali
 

[licquorice]

@Ali_A although FTTP mode is set to 'on' @Burnedrope has FTTC as can be seen from the DSL stats posted.

FTTP mode simply changes Port4 from LAN to WAN, it doesn't inhibit the DSL port for FTTC connections.

An engineer visit is required to investigate the disconnections.

[iniltous]

The OP isn’t on FTTP , they have DSL ( VDSL/FTTC  ) they just have the WAN port enabled , so the 4th Ethernet port has been set to WAN by switching the router to ‘full fibre mode’ , it’s not necessary, the OP could deselect the full fibre mode switch and make the 4th position back to LAN , but if it’s not used it’s irrelevant, if they have something in the 4th Ethernet slot they need to deselect full fibre mode or move the device to another Ethernet port 

[licquorice]

@Burnedrope have you tried connecting directly to the test socket behind the removable faceplate if the master socket to eliminate your internal wiring?

[Ali_A]

Good spot @licquorice.  

@Burnedrope did you notice if this issue with dropouts began after any particularly poor weather? 

Ali

[Burnedrope]

I'll test that over the weekend

[Burnedrope]

Hard to say really, we've had a fair few storms over the intervening period. There's nothing disrupting any external wiring such as tree branches etc.