Kitz ADSL Broadband Information
adsl spacer  
Support this site
Home Broadband ISPs Tech Routers Wiki Forum
 
     
   Compare ISP   Rate your ISP
   Glossary   Glossary
 
Please login or register.

Login with username, password and session length
Advanced search  

News:

Author Topic: help remembering term for where upstream n downstream split  (Read 1554 times)

snadge

  • Kitizen
  • ****
  • Posts: 1450
help remembering term for where upstream n downstream split
« on: April 25, 2021, 10:12:05 AM »

hello guys n gals

I cant remember the proper term/name for whre the upstream and downstream split - i recall there was a proper name for it, something the 'X' point (X being the word i cant remember lol)

can any of our skilled engineers remind me please?

thanks in advance and stay safe
Logged
Aquiss - 900/110/16ms - TP-Link AR73

niemand

  • Kitizen
  • ****
  • Posts: 1836
Re: help remembering term for where upstream n downstream split
« Reply #1 on: April 25, 2021, 01:08:56 PM »

What the context, please? Frequency Division Multiplexing, Time Division Multiplexing, neither and using echo cancellation and extremely clever maths along a metallic path?
Logged

snadge

  • Kitizen
  • ****
  • Posts: 1450
Re: help remembering term for where upstream n downstream split
« Reply #2 on: April 25, 2021, 06:39:10 PM »

What the context, please? Frequency Division Multiplexing, Time Division Multiplexing, neither and using echo cancellation and extremely clever maths along a metallic path?

Hi Carl, thanks for your swift reply , much appreciated, noit was just i was describing some things about DSL to my dad and i recall ther a proper name for where upstream n downstream splits, it has a name, like i say the 'something' point - been 15 year n im old so memory id going - it wasnt important i would just like to keep as much of my knowledge

thanks again CarlIT
Logged
Aquiss - 900/110/16ms - TP-Link AR73

Alex Atkin UK

  • Addicted Kitizen
  • *****
  • Posts: 5261
    • Thinkbroadband Quality Monitors
Re: help remembering term for where upstream n downstream split
« Reply #3 on: April 25, 2021, 08:58:37 PM »

I'm dying to know what you mean by "upstream and downstream splits" because its making my brain hurt trying to understand what on earth you could mean.  Splits from what?
Logged
Broadband: Zen Full Fibre 900 + Three 5G Routers: pfSense (Intel N100) + Huawei CPE Pro 2 H122-373 WiFi: Zyxel NWA210AX
Switches: Netgear MS510TXUP, Netgear MS510TXPP, Netgear GS110EMX My Broadband History & Ping Monitors

snadge

  • Kitizen
  • ****
  • Posts: 1450
Re: help remembering term for where upstream n downstream split
« Reply #4 on: April 25, 2021, 09:06:19 PM »

the tones were the upstream and downstream change in the dynamic spectrum ..maybe its just in ADLS i dunno but it had a proper name/term which i learned on THIS site I'm sure (may have been ASSIA documents) ita the point where upstream has a white space then downstream

if no one can think of it - forget about it not important - but there IS a term for it, like a split point but a longer better term
« Last Edit: April 25, 2021, 09:09:13 PM by snadge »
Logged
Aquiss - 900/110/16ms - TP-Link AR73

underzone

  • Reg Member
  • ***
  • Posts: 442
Re: help remembering term for where upstream n downstream split
« Reply #5 on: April 25, 2021, 09:33:59 PM »

Bandplan?
Logged

RealAleMadrid

  • Reg Member
  • ***
  • Posts: 305
Re: help remembering term for where upstream n downstream split
« Reply #6 on: April 25, 2021, 09:40:25 PM »

@Snadge Is it possible you are thinking of Demarcation point, otherwise known as the Master Socket which of course is nothing to do with Upstream and Downstream split, whatever that may be. ???
Logged

4candles

  • Kitizen
  • ****
  • Posts: 3298
  • Not young enough to know everything
Re: help remembering term for where upstream n downstream split
« Reply #7 on: April 26, 2021, 01:21:56 AM »

Guard band?

Quote
Guard Band (Tone 32 - 138kHz). Prevents cross talk between upstream and downstream data.

From: https://kitz.co.uk/adsl/adsl_technology.htm
Logged
To err is human - to purr feline
Zen FTTC 40/10 + Digital Voice   FRITZ!Box 7530

Alex Atkin UK

  • Addicted Kitizen
  • *****
  • Posts: 5261
    • Thinkbroadband Quality Monitors
Re: help remembering term for where upstream n downstream split
« Reply #8 on: April 26, 2021, 12:48:34 PM »

This is what threw me as I assumed you were meaning DSL but there isn't necessarily just one split , thus the bandplan that defines which tones are for upstream and which for down.  Also where it splits depends on the annex and DSL version in use.
« Last Edit: April 26, 2021, 12:50:46 PM by Alex Atkin UK »
Logged
Broadband: Zen Full Fibre 900 + Three 5G Routers: pfSense (Intel N100) + Huawei CPE Pro 2 H122-373 WiFi: Zyxel NWA210AX
Switches: Netgear MS510TXUP, Netgear MS510TXPP, Netgear GS110EMX My Broadband History & Ping Monitors

niemand

  • Kitizen
  • ****
  • Posts: 1836
Re: help remembering term for where upstream n downstream split
« Reply #9 on: April 27, 2021, 09:24:08 AM »

https://en.wikipedia.org/wiki/Frequency-division_multiplexing

Is what ADSL uses: does that ring any bells?
Logged