Is SNR on WBC as critical?

D-Dan · Sep 20, 2009, 22:18:10

I apologise if this has been covered, and I've missed it, but reading through other member's woes I have to ask, is the SNR on WBC as critcal as it is on Max.

The reason I ask is I've been sat looking at an SNR of between 2 - 3 (during my usual times) maxing out at 4 at 7am on Sunday morning, with a rock solid connection, but I'm still worried about the (as far as I am concerned - inevitable) re-sync and the corresponding drop in sync.

Should I continue to be worried, or is WBC more stable at lower SNR?

St6eve

Sebby · Sep 20, 2009, 22:21:09

I'd say that SNRM is the same on WBC as it is on Max. After all, it's referring to exactly the same thing.

As far as ADSL2+ stability goes, I'd have actually said it's less stable than Max, at least in its current state. But, if you're not having any trouble, i.e. your router is managing to hang on with a SNRM of 2-3dB, I wouldn't worry.

Lance · Sep 20, 2009, 22:49:17

Some netgears have been known in te past to hang on to a connection as low as -2. That shouldn't even be possible!

Sebby · Sep 20, 2009, 22:50:12

It's not possible, so it must just be Netgears misreporting!

drummer · Sep 21, 2009, 00:08:12

I have no idea regarding D-Dan's question but my NM has been hovering around 2.5 (plus or minus) since my last re-sync on the first of this month.

Current sync is 17628kbps downstream and 1124kbps upstream.

Throughput is generally in the region of 13500kbps, day or night and pings rarely go above 15ms.

Don't know if my stats are good or bad but it all seems to be working here.

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Lance · Sep 21, 2009, 06:31:02

As long as your line is relatively stable, drummer, your stats are good!

Rik · Sep 21, 2009, 16:06:36

BT seem to be changing the rules with regard to target NM. Mine has always been 9db. Last week it dropped to 6db and was stable. Today it's dropped to 3db, currently 1.6, and I don't think will hold overnight.

esh · Sep 21, 2009, 16:35:09

Quote from: Lance on Sep 20, 2009, 22:49:17
Some netgears have been known in te past to hang on to a connection as low as -2. That shouldn't even be possible!

Just wondering why this would be?

>>> math.pow(10,-2.0/10.0)
0.63095734448019325

So the signal is 2/3 of the noise. It doesn't mean the signal isn't there surely?

Rik · Sep 21, 2009, 16:37:52

In theory. More likely it means the report is wrong.