topic Re: Line profile/DLM stuck at 35000kbps down in Fibre

Line profile/DLM stuck at 35000kbps down

bw27473 — Tue, 11 Feb 2025 18:23:24 GMT

My downstream sync speed has been stuck at 35000kbps for a few months now. I've tried leaving the router/modem off for 30 minutes and also tried different modems. I'm on the Fibre 35 package and should be connecting at close to the maximum 40000kbps.

Is there anything else that can be done to get DLM to increase my sync speed? Line stats below:

Line attenuation (dB): Downstream 24.3
Connection speed (kbps): Downstream 35000 Upstream 7299
SNR margin (dB): Downstream 9.3 Upstream 6.0

Max: Upstream rate = 7299 Kbps, Max: Downstream rate = 42832 Kbps

Re: Line profile/DLM stuck at 35000kbps down

Chris-TalkTalk — Wed, 12 Feb 2025 07:06:39 GMT

Hi bw27473,

Line test is passing, is your router currently connected to the test socket - Your guide to main phone sockets - TalkTalk Help & Support

Chris

Re: Line profile/DLM stuck at 35000kbps down

bw27473 — Wed, 12 Feb 2025 09:30:01 GMT

Hi Chris,

The router is connected to the pre-filtered open reach MK3 master socket already. I've also connected a phone and cannot hear any noise on the line.

Re: Line profile/DLM stuck at 35000kbps down

Karl-TalkTalk — Wed, 12 Feb 2025 10:20:01 GMT

I've asked Openreach to reset the DLM profile for you, give it 30 minutes, then retest your speeds.

Thanks

Karl.

Re: Line profile/DLM stuck at 35000kbps down

bw27473 — Wed, 12 Feb 2025 11:25:58 GMT

Thanks Karl, I can see that my downstream sync speed is now 40000kbps, but a speedtest suggests its still restricted to the previous sync speed. (31 Mbps download - 6 Mbps upload)

Line stats now:

Bearer: 0, Upstream rate = 7242 Kbps, Downstream rate = 40000 Kbps

SNR margin (dB): Downstream 7.7 Upstream 6.2

I'll try another speedtest in a few days to see if this has changed. Thanks for the help.

Re: Line profile/DLM stuck at 35000kbps down

Karl-TalkTalk — Wed, 12 Feb 2025 11:27:26 GMT

OK, also, now the profile has increased, power off the router for 30 minutes to reset the session and see if a better sync rate is achieved.

Thanks

Karl.

Re: Line profile/DLM stuck at 35000kbps down

bw27473 — Wed, 12 Feb 2025 22:40:33 GMT

after powering router off for 30 minutes, download speeds are now matching sync speed.

37 Mbps download
5 Mbps upload

Connection speed (kbps): Downstream 40000 Upstream 7253

thanks for the help

Re: Line profile/DLM stuck at 35000kbps down

Anonymous — Thu, 13 Feb 2025 07:01:31 GMT

Morning,

I'm glad to hear this and thanks for confirming 🙂

Thanks

Michelle

topic Re: Line profile/DLM stuck at 35000kbps down in Fibre

Line profile/DLM stuck at 35000kbps down

Re: Line profile/DLM stuck at 35000kbps down

Re: Line profile/DLM stuck at 35000kbps down

Re: Line profile/DLM stuck at 35000kbps down

Re: Line profile/DLM stuck at 35000kbps down

Re: Line profile/DLM stuck at 35000kbps down

Re: Line profile/DLM stuck at 35000kbps down

37 Mbps download5 Mbps upload

Re: Line profile/DLM stuck at 35000kbps down

37 Mbps download
5 Mbps upload