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Re: Our Computer!
Originally Posted by ex_exile
(Post 4829791)
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.:sneaky: Are you telling me that there is no Modulate/Demodulate process with digital signaling? The quote is not crap. :ohmy: |
Re: Our Computer!
Originally Posted by rossifumi
(Post 4830347)
So for ADSL you use a router to connect do you? Isn't a router used to pass information (packets) between nodes within a network? You didn't get back to me on that one.
Are you telling me that there is no Modulate/Demodulate process with digital signaling? The quote is not crap. :ohmy: 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. |
Re: Our Computer!
Originally Posted by andrew63
(Post 4827904)
They work fine!
To save you changing the zillion UK plugs, bring some of those multi-plug with 4 or 6 on them and just change the one where it is plugged into the wall! Of course in QLD, it is illegal to change the plugs yourself! Andrew 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 ;) |
Re: Our Computer!
Originally Posted by ex_exile
(Post 4832205)
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!:p 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. |
Re: Our Computer!
Originally Posted by naifyboy
(Post 4832538)
Sorry to butt in - but I am a Network Manager about to emigrate to the same job (sponsered) in Oz.
As far as I am concerned Ex_Exile is correct. 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. |
Re: Our Computer!
Originally Posted by hoofie2002
(Post 4832676)
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. p.s. I've got B.Eng in Electronics so I'm sad and read this kind of stuff. |
Re: Our Computer!
Originally Posted by rodders39
(Post 4832708)
And that would seem to be the definitive answer on this one. Amen.
I'm sadder... I've bookmarked it for reading later... :thumbup: 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. |
Re: Our Computer!
Originally Posted by ex_exile
(Post 4832747)
Okay....... digital modulating, always thought about that more as multplexing (TDM or FDM), hummmm, wellll...:lol: 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. |
Re: Our Computer!
Originally Posted by steve`o
(Post 4832223)
Of course in QLD, it is illegal to change the plugs yourself!
sorry urban myth or in plain english a load of bollocks However plugging in a network cable is definately a no no. See this |
Re: Our Computer!
:rofl:
Originally Posted by BullcreekBob
(Post 4833079)
Perhap it's legal to change plugs, perhaps not.
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 :rofl: |
Re: Our Computer!
Will you lot pack it in, before I come over there and bang your heads together!!!!:confused:
You are just confusing us techno phobics even more!!!:huh: |
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