Virgin Media 70, 150 & 200 Mb Upgrades

[mmm]

Originally Posted by Ignitionnet

There may be a 4th channel at 25.8MHz. That's where it usually goes given where the rest of them are. Group of 4 between 22.6 and 49.4, with whatever is underneath for STBs.

I had a brief outage at 6am this morning, can't see any change still have 2 upstream channels including that 25.8MHz one, not sure what was before

Upstream
 	US-1	US-2	US-3	US-4
Channel Type	2.0	2.0	N/A	N/A
Channel ID	20	18	N/A	N/A
Frequency (Hz)	25800000 Hz	39400000 Hz	N/A	N/A
Ranging Status	Success	Success	N/A	N/A
Modulation	QAM16	QAM16	N/A	N/A
Symbol Rate (Sym/sec)	5120000	5120000	N/A	N/A
Mini-Slot Size	128	128	N/A	N/A
Power Level (dBmV)	40.0 dBmV	41.3 dBmV	N/A	N/A
T1 Timeouts	0	0	N/A	N/A
T2 Timeouts	0	0	N/A	N/A
T3 Timeouts	0	0	N/A	N/A
T4 Timeouts	0	0	N/A	N/A

[General Maximus]

that is cool, I wasn't expecting it in October, just by the end of the year. My birthday is November 10th so any time around then would be cool

[qasdfdsaq]

Originally Posted by General Maximus

that is cool, I wasn't expecting it in October, just by the end of the year. My birthday is November 10th so any time around then would be cool

Yes, Virgin Media is deliberately holding your upgrade to give it to you on your birthday.

[General Maximus]

Thought so

[Pierre]

Just been looking at the plans to start implementing remote phy come the start of 2017.

As always, not my area of expertise but I am becoming more involved in what happens between the CMTS and the Core Routers.

[Ignitionnet]

Originally Posted by Pierre

Just been looking at the plans to start implementing remote phy come the start of 2017.

Cool. Will improve plant performance and allow more use of WDM to lower fibre count.

[Kushan]

Can I get an ELI5 what remote phy is? (Before qas answers, I already looked at the Cisco paper and frankly I'm none the wiser).

[RainmakerRaw]

Originally Posted by Kushan

Can I get an ELI5 what remote phy is? (Before qas answers, I already looked at the Cisco paper and frankly I'm none the wiser).

According to 2 seconds on Google:

Remote PHY refers to the technique of moving the PHY circuit out of a device such as a CCAP and putting the PHY circuit at the end of a network. Remote PHY builds upon the work started with Modular CMTS (M-CMTS) and Modular Headend Architecture (MHA) at CableLabs.

Tut, obviously...

Originally Posted by Ignitionnet

Before end of year, depending on area.

Now for the obligatory "which year is that". For the last round my area should have been done Aug 14 finally done in March 15.

[Ignitionnet]

Originally Posted by Kushan

Can I get an ELI5 what remote phy is? (Before qas answers, I already looked at the Cisco paper and frankly I'm none the wiser).

It basically takes part of the line card customers connect to and puts it out in the field. The fibre link between node and hubsite goes from analogue to all digital.

The remote PHY receives 1s and 0s from the hub site, across the fibre link, which it turns into RF for the cable modems and sends down the coax, and it converts RF arriving on the coax from the modems into 1s and 0s to go into the upstream laser.

[Chrysalis]

Has anyone ever heard of having multiple nodes per street when takeup is really high? or do VM have node sizes that have a minimum size that exceeds that?

[Ignitionnet]

I haven't specifically though I know there are some very small nodes in the field.

There's no technical reason why it couldn't be done.

[Kushan]

Originally Posted by Ignitionnet

It basically takes part of the line card customers connect to and puts it out in the field. The fibre link between node and hubsite goes from analogue to all digital.

The remote PHY receives 1s and 0s from the hub site, across the fibre link, which it turns into RF for the cable modems and sends down the coax, and it converts RF arriving on the coax from the modems into 1s and 0s to go into the upstream laser.

Makes a bit more sense, thank you

Originally Posted by Chrysalis

Has anyone ever heard of having multiple nodes per street when takeup is really high? or do VM have node sizes that have a minimum size that exceeds that?

There's plenty of instances where two properties next to each other on the same street, with the same post code, are on different nodes. Internally, although Virgin will put messages on the website or IVR saying what post codes are affected by issues, they actually track them via an internal node code, like CCC0 1234, for this very reason.

It's why it's usually pointless checking with your neighbour if their connection is all right or not, because nothing is guaranteed.

[Ignitionnet]

I think he's asking about nodal areas being so small that a single street has 2 of them all to itself rather than a post code being split across 2 nodes, which can and does happen and is entirely dependent on how the area was built originally.

I've been told that there are student areas where there's fibre basically to the tap as usage is huge, uptake high, and all the houses are HMOs.

[broadbandking]

Originally Posted by Ignitionnet

It basically takes part of the line card customers connect to and puts it out in the field. The fibre link between node and hubsite goes from analogue to all digital.

The remote PHY receives 1s and 0s from the hub site, across the fibre link, which it turns into RF for the cable modems and sends down the coax, and it converts RF arriving on the coax from the modems into 1s and 0s to go into the upstream laser.

Simple as that then