Kitz Forum

Broadband Related => ADSL Issues => Topic started by: noddy on July 22, 2021, 07:08:20 AM

Title: Affects of ethernet
Post by: noddy on July 22, 2021, 07:08:20 AM
I was running DSLstats on the laptop ( wireless ) while checking behind my PC , which was off but plugged in to a socket thats switched off. When I removed the ethernet cable from the back of the PC CRC errors shot up SNR margin dropped , so plugged it back in everything returns to normal . Then as an experiment unplug the PC from the power socket and that shows CRC errors but not as dramatic , could this be an earthing problem ? or my old reliable Billion 7800N cheers
Title: Re: Affects of ethernet
Post by: burakkucat on July 22, 2021, 02:13:22 PM
I think you need to perform one further experiment . . . and that is to disconnect the Ethernet cable (which runs to the switched off PC) from the Billion 7800N.

What do you now see, reported by DSLstats?
Title: Re: Affects of ethernet
Post by: noddy on July 22, 2021, 05:22:42 PM
I think you need to perform one further experiment . . . and that is to disconnect the Ethernet cable (which runs to the switched off PC) from the Billion 7800N.

What do you now see, reported by DSLstats?
Good point , I'll try it in the morning cheers
Title: Re: Affects of ethernet
Post by: noddy on July 23, 2021, 06:37:51 AM
Good point , I'll try it in the morning cheers
and here is the result  :no: , didn't leave it out too long as not sure how far SNR and CRC's were going to go .it's the spot just before 6.31
Title: Re: Affects of ethernet
Post by: burakkucat on July 23, 2021, 09:58:50 AM
To me, all the results seem to be indicating a problem with the Billion 7800N.  :-\
Title: Re: Affects of ethernet
Post by: noddy on July 23, 2021, 11:19:35 AM
Probably time to research alternatives  Zyxel ? although I always get confused which model would be best for ADSL2 longline
Title: Re: Affects of ethernet
Post by: burakkucat on July 23, 2021, 11:57:35 AM
The ZyXEL model I would normally suggest (VMG1312-B10A) is no longer manufactured and is becoming difficult to find in a good second-hand condition, at a reasonable price.

Perhaps other members will be able to make recommendations?
Title: Re: Affects of ethernet
Post by: jelv on July 23, 2021, 01:53:54 PM
(VMG1312-B10A) is no longer manufactured and is becoming difficult to find in a good second-hand condition, at a reasonable price.

@noddy If you are inclined to the above, make me an offer - I've just dug one out of my cupboard.
Title: Re: Affects of ethernet
Post by: noddy on July 23, 2021, 02:04:08 PM
@noddy If you are inclined to the above, make me an offer - I've just dug one out of my cupboard.
Tempting ;) give me an idea what you're after
Title: Re: Affects of ethernet
Post by: tickmike on July 23, 2021, 09:38:13 PM
My ADSL2 line is 4.8kl and I use a HG612
Title: Re: Affects of ethernet
Post by: noddy on July 24, 2021, 06:26:54 AM
My ADSL2 line is 4.8kl and I use a HG612
I'd assumed ( obviously wrong ) the HG612 was a VDSL modem ?
Title: Re: Affects of ethernet
Post by: roseway on July 24, 2021, 06:37:53 AM
The HG612 was an ADSL/VDSL modem/router with two ethernet ports and no WiFi. It was originally used in the UK as a VDSL2 bridge modem, but it also performed well as an ADSL modem/router. It didn't have enough power for practical use as a VDSL2 modem/router, although it did work in that role.
Title: Re: Affects of ethernet
Post by: noddy on July 24, 2021, 09:35:57 AM
The HG612 was an ADSL/VDSL modem/router with two ethernet ports and no WiFi. It was originally used in the UK as a VDSL2 bridge modem, but it also performed well as an ADSL modem/router. It didn't have enough power for practical use as a VDSL2 modem/router, although it did work in that role.
I see :) . I was hoping to stay with a one box option as the router runs from a UPS ( because of all the power cuts we have  :( ) I'll keep researching  :fingers:
Title: Re: Affects of ethernet
Post by: noddy on July 25, 2021, 09:12:39 AM
could I ask is the wifi on the Zyxel any good ?
Title: Re: Affects of ethernet
Post by: RealAleMadrid on July 25, 2021, 08:27:42 PM
The VMG1312-B10A only has 2.4Ghz wireless, you would be better off with the VMG8924-B10A which is dual band 2.4Ghz and 5GHz. I have used this device and it works very well although I have used it in modem mode also providing the wi-fi connection but with a separate router. It would be fine as a single box solution.
Title: Re: Affects of ethernet
Post by: noddy on July 26, 2021, 06:15:18 AM
The VMG1312-B10A only has 2.4Ghz wireless, you would be better off with the VMG8924-B10A which is dual band 2.4Ghz and 5GHz. I have used this device and it works very well although I have used it in modem mode also providing the wi-fi connection but with a separate router. It would be fine as a single box solution.
Cheers , is the VMG8924-B10A suitable for long lines ( attn 58 ) ?
Title: Re: Affects of ethernet
Post by: RealAleMadrid on July 26, 2021, 08:57:17 AM
I can't really answer that, never used it on a long line ADSL service but is has a good Broadcom modem chipset with a common mode noise rejection filter on the line input so it should be OK. :)
Title: Re: Affects of ethernet
Post by: noddy on July 29, 2021, 10:31:25 AM
I think I'm going to give the VMG8924-B10A a try  :fingers: I've seen a couple for sale is it likely they would be locked to a provider ? and if so are they easy / safe to unlock ? cheers
Title: Re: Affects of ethernet
Post by: aesmith on September 10, 2021, 02:40:51 PM
Cheers , is the VMG8924-B10A suitable for long lines ( attn 58 ) ?
That's what I have on my line which is 53dB according to the Zyxel (Billion made it 55dB and Thomson said 57dB so it depends on who you ask).