Our Computer!
May 25th 2007, 1:30 pm
#16
Joined: Mar 2004
Posts: 5,940
Re: Our Computer!
Frankly that quote is crap, but thanks for playing.
Modulate / demodulate refers to the process of converting from analogue to digital / digital to analogue. With ADSL there is no analogue digital conversion.
You could call the box a bicycle if you wanted to but it still wouldnt be one, try cycling to the shops on it.
Modulate / demodulate refers to the process of converting from analogue to digital / digital to analogue. With ADSL there is no analogue digital conversion.
You could call the box a bicycle if you wanted to but it still wouldnt be one, try cycling to the shops on it.
Are you telling me that there is no Modulate/Demodulate process with digital signaling?
The quote is not crap.
May 25th 2007, 8:51 pm
#17
You call that a moustache
Joined: Sep 2006
Location: Heading West..
Posts: 2,060
Re: Our Computer!
Are you telling me that there is no Modulate/Demodulate process with digital signaling?
The quote is not crap.
As I say you can call it what you like but as it doesnt actualy perform the modulate demodulate process it is not a modem, I guess the manufactures dont call it a router as it scares people. The general public doesnt understand the technology, and they dont have to, so some explainations you see it books aimed at the general public are not technically correct.
Last edited by ex_exile; May 25th 2007 at 8:55 pm.
May 25th 2007, 8:58 pm
#18
Worongary
Joined: Sep 2005
Location: GC hinterland
Posts: 10,288
Re: Our Computer!
sorry urban myth or in plain english a load of bollocks
go to bunnings buy as many 10amp plugs as you require and have fun changing them over, a lead to an computor / kettle or any other "white goods" whatever does not consitute fixed wiring and therefore does not come under asnz 3000-2000 ( aussie wiring rules )
regards steve
electrician in qld
May 25th 2007, 11:21 pm
#19
What am I doing??!!
Joined: Apr 2007
Location: *Was Ipswich, Suffolk* -- *Now Berwick, Melbourne*
Posts: 96
Re: Our Computer!
Yes, your computer in one node on a network (the internet) the target website resides on another node on the network
Yes, yes I am, there may be multiplexing with G.lite ADSL but thats different.
Yes, yes it is!
As I say you can call it what you like but as it doesnt actualy perform the modulate demodulate process it is not a modem, I guess the manufactures dont call it a router as it scares people. The general public doesnt understand the technology, and they dont have to, so some explainations you see it books aimed at the general public are not technically correct.
Yes, yes I am, there may be multiplexing with G.lite ADSL but thats different.
Yes, yes it is!
As I say you can call it what you like but as it doesnt actualy perform the modulate demodulate process it is not a modem, I guess the manufactures dont call it a router as it scares people. The general public doesnt understand the technology, and they dont have to, so some explainations you see it books aimed at the general public are not technically correct.
As far as I am concerned Ex_Exile is correct.
May 26th 2007, 12:52 am
#20
BE Forum Addict
Joined: Jan 2006
Location: Perth, WA
Posts: 1,376
Re: Our Computer!
The base ADSL technical transmission spec ITU G.992.1 indicates that the copper wire transmission signal is indeed modulated, just like dial-up modems, although much faster.
Remember that due to variable distance and losses, you cannot whack a standard on/off sequence down a copper phone pair [the same concept as ethernet cable]. You have to use frequency shifting [modulation of the digitial input] to transmit the on/off sequence. Older dial-up models use the same process. This is also why you have 'splitters' on the phone line - the high frequency adsl signal modulation shows up as noise on any phone on the same physical line as an ADSL model unless you filter it off.
An ADSL 'router' or 'modem' nowadays is both. It routes network traffic but also modulates digital network traffic to analogue for phone line transmission.
p.s. I've got B.Eng in Electronics so I'm sad and read this kind of stuff.
May 26th 2007, 1:12 am
#21
Timelord
Joined: May 2006
Location: Lost in space...
Posts: 2,834
Re: Our Computer!
Sorry, but Rossifumi is indeed correct. Apologies to everyone reading this, it gets a bit geeky now !
The base ADSL technical transmission spec ITU G.992.1 indicates that the copper wire transmission signal is indeed modulated, just like dial-up modems, although much faster.
Remember that due to variable distance and losses, you cannot whack a standard on/off sequence down a copper phone pair [the same concept as ethernet cable]. You have to use frequency shifting [modulation of the digitial input] to transmit the on/off sequence. Older dial-up models use the same process. This is also why you have 'splitters' on the phone line - the high frequency adsl signal modulation shows up as noise on any phone on the same physical line as an ADSL model unless you filter it off.
An ADSL 'router' or 'modem' nowadays is both. It routes network traffic but also modulates digital network traffic to analogue for phone line transmission.
The base ADSL technical transmission spec ITU G.992.1 indicates that the copper wire transmission signal is indeed modulated, just like dial-up modems, although much faster.
Remember that due to variable distance and losses, you cannot whack a standard on/off sequence down a copper phone pair [the same concept as ethernet cable]. You have to use frequency shifting [modulation of the digitial input] to transmit the on/off sequence. Older dial-up models use the same process. This is also why you have 'splitters' on the phone line - the high frequency adsl signal modulation shows up as noise on any phone on the same physical line as an ADSL model unless you filter it off.
An ADSL 'router' or 'modem' nowadays is both. It routes network traffic but also modulates digital network traffic to analogue for phone line transmission.
p.s. I've got B.Eng in Electronics so I'm sad and read this kind of stuff.
May 26th 2007, 1:36 am
#22
You call that a moustache
Joined: Sep 2006
Location: Heading West..
Posts: 2,060
Re: Our Computer!
still a router though!I spend my life dealing with DWDM, and FTTN believe that should be the future, ADSL is sooooo last 2004! Definatly no modulating with FTTN.
Last edited by ex_exile; May 26th 2007 at 1:39 am.
May 26th 2007, 4:39 am
#23
BE Forum Addict
Joined: Jan 2006
Location: Perth, WA
Posts: 1,376
Re: Our Computer!
Okay....... digital modulating, always thought about that more as multplexing (TDM or FDM), hummmm, wellll... still a router though!
I spend my life dealing with DWDM, and FTTN believe that should be the future, ADSL is sooooo last 2004! Definatly no modulating with FTTN.
still a router though!I spend my life dealing with DWDM, and FTTN believe that should be the future, ADSL is sooooo last 2004! Definatly no modulating with FTTN.
May 26th 2007, 7:56 am
#25
Worongary
Joined: Sep 2005
Location: GC hinterland
Posts: 10,288
Re: Our Computer!
Perhap it's legal to change plugs, perhaps not.
However plugging in a network cable is definately a no no. See this
However plugging in a network cable is definately a no no. See this
mmmm let me think
no cannot see any connection
talk about tangents
May 26th 2007, 10:31 am
#26
BE Forum Addict
Joined: Mar 2007
Location: Derwent Valley
Posts: 1,389
Re: Our Computer!
Will you lot pack it in, before I come over there and bang your heads together!!!!
You are just confusing us techno phobics even more!!!
You are just confusing us techno phobics even more!!!
