3.1 upstream channel?

[olisun]

Hi,

VM are doing some work in my area and I lost my internet connectivity briefly today only to find now I have 5 x 3.0 upstream channels and 1 x 3.1 upstream channel.

3.0 Upstream channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 23600000 40.770599 5120 KSym/sec 64QAM 5
2 30100000 41.020599 5120 KSym/sec 64QAM 4
3 49600000 42.270599 5120 KSym/sec 64QAM 1
4 36600000 42.020599 5120 KSym/sec 64QAM 3
5 43100000 41.770599 5120 KSym/sec 64QAM 2

3.1 Upstream channels
Channel Channel Width (MHz) Power (dBmV) FFT Type Modulation
7 10.4 37.5 2K QAM8

3.1 Upstream channels
Channel Channel Type Number of Active Subcarriers First Active Subcarrier (Hz) T3 Timeouts T4 Timeouts
7 OFDMA 208 53.4 0 0

[gitty]

The channel is not that big, but it's better than nothing. Exciting news. 🙂

[Roger_Gooner]

All upstream channels are DOCSIS 3.0.

[olisun]

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@Roger_Gooner wrote:

All upstream channels are DOCSIS 3.0.

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[Roger_Gooner]

VM has recently been doing upstream D3.1 in a few areas for trial purposes I think. If it goes well then VM can offer higher upload speeds without having to wait for XGS-PON.

[Synthetic]

Have you noticed any improvement in latency since the 3.1 upstream was added?

[olisun]

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@Synthetic wrote:

Have you noticed any improvement in latency since the 3.1 upstream was added?

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https://www.speedtest.net/result/13564423536

[Synthetic]

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@olisun wrote:

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@Synthetic wrote:

Have you noticed any improvement in latency since the 3.1 upstream was added?

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https://www.speedtest.net/result/13564423536

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Thanks, what was it before? 

[reddev]

I also noticed the D3.1 channel on upstream a few days ago after a short period of downtime in the morning.

So far though, I have noticed no difference in speed or latency. Before the change I had 13-15ms to CF, and 16-18ms to Google, and it has stayed at that since.

The upload also tops out at the same speed as before, although as it is still provisioned at the same rate, that's to be expected.

So at the moment, it's made absolutely no difference to me. There's also nothing of note in the network log.

Promising signs, though! I upload quite frequently, so even if VM doubled the upstream to around 100Mb/s that would be nice.

[Synthetic]

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@reddev wrote:

I also noticed the D3.1 channel on upstream a few days ago after a short period of downtime in the morning.

So far though, I have noticed no difference in speed or latency. Before the change I had 13-15ms to CF, and 16-18ms to Google, and it has stayed at that since.

The upload also tops out at the same speed as before, although as it is still provisioned at the same rate, that's to be expected.

So at the moment, it's made absolutely no difference to me. There's also nothing of note in the network log.

Promising signs, though! I upload quite frequently, so even if VM doubled the upstream to around 100Mb/s that would be nice.

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Thanks for confirming! The ispreview article that links here mentioned improved latency which I was skeptical about, which was the reason for me asking 🙂