Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[srt]

Hi again folks,
Following on from my earlier issues regarding modem/router
I managed to get "Routerstats" for HH5 working and noticed some marked drops in the "noise margin and max rate readings when calling out or in with telephone. Presently I have the faceplate in place and note the following in viewing the graph (attached).

1st drop is calling out with dect phone
2nd (big) spike up is receiving a call from mobile.
3rd down no calls
4th (big) down is calling out on regular phone.
5th (big) down is receiving call from mobile. Notice this also shows an upward movement of the downstream.
Maybe this is normal but the quietline calls indicate no noise.
I would be grateful for any ideas as I am in "discussion" with a bt support member regarding all my earlier no shows to investigate what happened back in January when my connections were constantly failing.
Thanks

[srt]

Doh - forgot attachement

[burakkucat]

Sudden swings in SNRM, when the telephone equipment associated with the line is used, may be indicative of a developing HR (or semi-conducting) joint.

When performing a QLT, how does it sound to your ear?

[srt]

Thank you BK
In regard to the QLT I hear nothing to be honest.
I now have the faceplate off and am using a brand new bt filter in the test socket and a wired phone making two calls to QL.
Ive attached the graph of those calls.
The line has dropped a little in speeds whilst I connected the filter. It seems not to have impacted the stability and I am pleased about that
I have ordered one of those MK2 vdsl faceplates that have been discussed in another thread as my present faceplate is the original supplied when I had infinity set up.

[burakkucat]

Hmm . . . Nothing really to be concerned about until the events between 1649 - 1700 hours. What were you doing to produce those sudden downwards spikes? Were they the results of looping the pair whilst performing the two QLTs?

[srt]

Yes - if thats what you mean by looping the pair
They were the outgoing calls to QLT.

[burakkucat]

Yes, that is what I meant. 

Something suspicious is definitely taking place but, at present, you have nothing really concrete to report to your CP. 

[srt]

Suspicious - yes but as you say nothing that may explain it
Last night my daughter phoned here twice and the signals reacted as before on each occasion so it seems associated with phone activity.
I noticed todays recordings are running reasonably stable but the upstream has drifted into the 6.3 area and downstream 5.7.
I am hopeful that the new faceplate might have a positive but will update when its here and fitted.
I will also let the bt chap know of this phenomenon but cant see whats to be done

[srt]

Well I tried out the MK2 faceplate with little or no difference. Ive advised my BT support chap (not about fitting the new faceplate) and he feels it still needs investigating and the drop when the phone is connected in the test socket seems to point to the fault being elsewhere?
I did a couple more QLT and heard very very faint talking whilst I had my DECT phone amplified. With the wired connection I cannot swear to total quiet but I think I am just getting paranoid 
BT chap says to await the end of the engineering restricted work in my area as another booking would likely result in another no show. He is keeping tabs on things and will get back with a concrete visit in due course. I still wonder why my DS snr starts out at 6.3 when I re-sync and it then tails down to around 5.5 whereas the US snr virtually remains constant at 6.00.
Again I fear I am becoming overly pedantic 

[burakkucat]

. . . the drop when the phone is connected in the test socket seems to point to the fault being elsewhere?

Yes, that confirms it is not a fault with your internal wiring.

[Chrysalis]

yeah either a HR or NTE5 fault.

I fixed my HR symptoms by putting in a new NTE5.

[burakkucat]

Just a quick query, Chrys, as I don't want to hijack this thread . . .

Regarding the NTE5/A that you removed. Was it a BT original from the 1980s, with three screw terminals (A, B & earth) plus a gas-discharge tube over-voltage protector?

I have a vague recollection of either Ezzer or Black Sheep mentioning that the gas-discharge tubes, when sufficiently aged, had been found to have a detrimental effect on an xDSL signal.

(Needless to say the NTE5/A, installed in The Cattery is a 1980s BT original. The gas-discharge tube glows a very pretty violet colour when ignited by 500V DC. Tucked away in my what-not is a brand-new NTE5/A, manufactured in 2013, that has yet to be fitted . . . )

[Chrysalis]

nah its not that old, was fitted about 5-6 years ago when I had adsl installed.

only 2 screws, tommorow after sleep will post pic if you like.

[art37]

I had this issue when I was on ADSL. I was advised to try double filtering and it worked a treat.

[srt]

Well my HH5 monitoring shows the snr is still giving drops in connection with phone use
Interestingly my upload speeds have suffered a lot over the past few days too.
The snr drops seen on this graph indicates a call received the other night from my daughter to Mum - - yes they can talk
The bt test with low upload was this morning
I still await an engineer as they still display MBORC for my area (allegedly)