Kitz Forum

Broadband Related => Telephony Wiring + Equipment => Topic started by: neil on January 25, 2020, 03:25:05 PM

Title: is it my line earthed
Post by: neil on January 25, 2020, 03:25:05 PM
Hi,
I am getting strange noise in my phone line. when i press 1 i hear humming noise. Sometimes it is there for few seconds then gone and back again. I want to ask is my line earthed somewhere? and today phone was not ringing properly. Not a complete ring just a ring for a fraction of second. Is it possible to check if line is earthed or not in telnet data?
Title: Re: is it my line earthed
Post by: Black Sheep on January 25, 2020, 03:38:08 PM
Sounds like an 'Earth' condition from your description ??

Make sure you're in the master sockets - test socket .... and ring your CP/ISP and get them to test it. Your phone may also be faulty, so I'd try a friend/neighbours phone, just to rule it out.

Title: Re: is it my line earthed
Post by: neil on January 25, 2020, 03:39:17 PM
Sounds like an 'Earth' condition from your description ??

Make sure you're in the master sockets - test socket .... and ring your CP/ISP and get them to test it. Your phone may also be faulty, so I'd try a friend/neighbours phone, just to rule it out.
is it possible to check it in telnet data of modem using dslstats?
Title: Re: is it my line earthed
Post by: Black Sheep on January 25, 2020, 03:44:06 PM
Not my forte, i'm afraid ... but I wouldn't have thought so ??

The modem is simply downloading and uploading data, so it will definitely show corruption of data if there is a fault on the circuit, but not what kind of fault it is ??

Only a remote test by the ISP/CP can do this.
Title: Re: is it my line earthed
Post by: Alex Atkin UK on January 25, 2020, 03:47:08 PM
My line has always had a bit of a hum in the background, I did mention it once and was told they couldn't hear anything and no fault detected :/

Should the line be absolutely silent?
Title: Re: is it my line earthed
Post by: licquorice on January 25, 2020, 03:48:39 PM
Yes
Title: Re: is it my line earthed
Post by: neil on January 25, 2020, 03:53:56 PM
Not my forte, i'm afraid ... but I wouldn't have thought so ??

The modem is simply downloading and uploading data, so it will definitely show corruption of data if there is a fault on the circuit, but not what kind of fault it is ??

Only a remote test by the ISP/CP can do this.
no errors of any kind on my line. After modem reboot an hour ago it is working fine
Title: Re: is it my line earthed
Post by: Black Sheep on January 25, 2020, 04:00:36 PM
Could just be your phone then, bud ??

Logical elimination process ... over to you to apply.  ;D ;D
Title: Re: is it my line earthed
Post by: neil on January 25, 2020, 04:21:56 PM
Could just be your phone then, bud ??

Logical elimination process ... over to you to apply.  ;D ;D
i tested both phones in my phone plug unplug in both i hear this noise let me post here a audio file
Title: Re: is it my line earthed
Post by: neil on January 25, 2020, 04:51:51 PM
hmm not allowed to upload it here how i can share it 8 sec long audio file
Title: Re: is it my line earthed
Post by: Black Sheep on January 25, 2020, 04:59:29 PM
I'll be honest, mate ... I wouldn't spend time trying to do so.

IF your line is audibly noisy in the test socket, and you've ruled out your own equipment ... ring your provider ... now.  ;) :)
Title: Re: is it my line earthed
Post by: neil on January 25, 2020, 05:11:36 PM
I'll be honest, mate ... I wouldn't spend time trying to do so.

IF your line is audibly noisy in the test socket, and you've ruled out your own equipment ... ring your provider ... now.  ;) :)
i reported it once before and my lineman came after checking he said everything is fine but i said there is noise he said it is because of dsl
Title: Re: is it my line earthed
Post by: Black Sheep on January 25, 2020, 05:18:04 PM
i reported it once before and my lineman came after checking he said everything is fine but i said there is noise he said it is because of dsl

Not being on-site, means it's all guess-work for us.

Do you have extension wiring (other sockets) ??, are they used ?? Do you have filters plugged into each socket ??

Title: Re: is it my line earthed
Post by: neil on January 25, 2020, 05:30:18 PM
Not being on-site, means it's all guess-work for us.

Do you have extension wiring (other sockets) ??, are they used ?? Do you have filters plugged into each socket ??
i am not from uk so no master socket here i just connected main telephone drop wire with my cat6 cable via butt connectors then it is connected with splitter one cable going into modem and one cable to telephone double socket and 2 phone sets are connected with it
Title: Re: is it my line earthed
Post by: Black Sheep on January 25, 2020, 07:53:01 PM
Ah right .... wasn't aware you were from different shores ??.

Can you put a photo of the set up on, please ... I can't quite get my head around the description you mention ??
Title: Re: is it my line earthed
Post by: neil on January 26, 2020, 12:48:02 PM
Ah right .... wasn't aware you were from different shores ??.

Can you put a photo of the set up on, please ... I can't quite get my head around the description you mention ??

hehehehe  ;D i am just 100ms  away :cool: :cool: not that far  ;) single pair twisted pair drop wire >> using single pair of cat6 cable >> splitter >> one wire to modem >> and from splitter filtered connection with 2 telephone sets
Title: Re: is it my line earthed
Post by: Alex Atkin UK on January 26, 2020, 01:00:34 PM
hehehehe  ;D i am just 100ms  away :cool: :cool: not that far  ;) single pair twisted pair drop wire >> using single pair of cat6 cable >> splitter >> one wire to modem >> and from splitter filtered connection with 2 telephone sets

I'm still confused, how is the drop wire connecting to the cat6?  Why are you unable to test at this location?
Title: Re: is it my line earthed
Post by: neil on January 26, 2020, 01:41:11 PM
I'm still confused, how is the drop wire connecting to the cat6?  Why are you unable to test at this location?
using 3m UY2 connectors drop wire is connected with a pair of cat6 cable
this one
https://www.amazon.com/3M-Scotchlok-IDC-Butt-Connector/dp/B003ASGXT6
Title: Re: is it my line earthed
Post by: mofa2020 on January 26, 2020, 02:56:06 PM
This is the most effective way to connect them, soldering or just twisting would really decrease performance.. Personally I used RJ-11 on the leading cable then directly into the splitter then one wire to modem and the other to phone..
Title: Re: is it my line earthed
Post by: Alex Atkin UK on January 26, 2020, 07:54:52 PM
I see.

Yeah its very different in the UK as everything up to the master socket is considered property of the telephone company.  They include a splitter/filter that plugs and screws into the front of that socket, where we can hook up our personal wiring and it is physically disconnected simply by removing that front panel, exposing the test socket that it plugs into.
Title: Re: is it my line earthed
Post by: neil on January 27, 2020, 07:12:59 AM
i am sharing link of the folder please listen audio recording and give me feedback and please use headphones to listen the background humming noise
https://drive.google.com/drive/folders/1s8fe_o_-JIu3kirhVjyWLeiD9_iyeO1v?usp=sharing
Title: Re: is it my line earthed
Post by: neil on January 27, 2020, 07:14:42 AM
I see.

Yeah its very different in the UK as everything up to the master socket is considered property of the telephone company.  They include a splitter/filter that plugs and screws into the front of that socket, where we can hook up our personal wiring and it is physically disconnected simply by removing that front panel, exposing the test socket that it plugs into.
yes master socket is very elegant and got RF filter surge protection etc and i wanted to buy one for myself. but with shipping it was very expensive.
Title: Re: is it my line earthed
Post by: burakkucat on January 27, 2020, 04:19:03 PM
i am sharing link of the folder please listen audio recording and give me feedback and please use headphones to listen the background humming noise

I've taken a listen. The first file (Recording (2).m4a) does have a very faint background of AC mains hum. But it is very faint and not something that would seriously bother me.
Title: Re: is it my line earthed
Post by: neil on January 27, 2020, 07:17:05 PM
I've taken a listen. The first file (Recording (2).m4a) does have a very faint background of AC mains hum. But it is very faint and not something that would seriously bother me.
ok thanks and what about 2 days ago my phone not ringing properly. It was just ringing for a fraction of second. But now it is working fine
Title: Re: is it my line earthed
Post by: burakkucat on January 27, 2020, 09:22:00 PM
Clearly it was an intermittent fault which are, of course, very awkward to resolve.

Think about the various environmental conditions at that time . . .

Weather: Was it raining heavily? Was it hotter than normal? Was it more humid than normal?

Was there any building work / construction taking place near to route of the cable, which contains your pair?

Was the telephony provider / Internet service provider performing some maintenance work?
Title: Re: is it my line earthed
Post by: neil on January 28, 2020, 08:42:40 AM
Clearly it was an intermittent fault which are, of course, very awkward to resolve.

Think about the various environmental conditions at that time . . .

Weather: Was it raining heavily? Was it hotter than normal? Was it more humid than normal?

Was there any building work / construction taking place near to route of the cable, which contains your pair?

Was the telephony provider / Internet service provider performing some maintenance work?
yes i have been told that upgrades are going on in my ISP all over country last time i visited the exchange. But dont know whats the status now. Yes it was raining that day, today is also raining but i just checked phone is ringing properly
Title: Re: is it my line earthed
Post by: neil on February 24, 2020, 07:11:10 AM
Clearly it was an intermittent fault which are, of course, very awkward to resolve.

Think about the various environmental conditions at that time . . .

Weather: Was it raining heavily? Was it hotter than normal? Was it more humid than normal?

Was there any building work / construction taking place near to route of the cable, which contains your pair?

Was the telephony provider / Internet service provider performing some maintenance work?
It was raining few days ago and AC main hum noise was gone from my line. But after clear skies for few days it is back again. I want to ask is it because of bad grounding in msag or is it because of bad wiring in my DP on pole?
Title: Re: is it my line earthed
Post by: burakkucat on February 24, 2020, 09:58:38 PM
It was raining few days ago and AC main hum noise was gone from my line. But after clear skies for few days it is back again. I want to ask is it because of bad grounding in msag or is it because of bad wiring in my DP on pole?

It is impossible to say without physically investigating the infrastructure. 

On those few occasions when I have had personal experience of 50 Hz hum, it was due to water ingress into an underground joint. The worst case was after a prolonged period of rain which flooded the ducts and joint chambers.