Chief Transmission and Switching Engineer(JP

Let's do study and measures of "Telecommunication chief engineer examination" where a good teaching material doesn't exist though the examination contents is advanced little by little.



Now, chief telecommunications engineer to study today
Let's do it! !

It is the story of ADSL-related problems today.

Basically, the ADSL an overview of correct and incorrect sentences
I'd like to determine the problem, and I have ADSL or ISDN
Because when he was a man in his prime, this kind of problem I'm good at
Perhaps, young people these days are like the ADSL
Maybe not familiar
(Bale is so old)

Companies also are engaged, I called a "life entitled" The
I'd have been one after joining new friends, too
New communication system was not originally interested in, so
ADSL like these I like it I do not know or

Somehow, "Speaking of internet ADSL!!" I felt
I miss the days when somehow

Well, the topic I will introduce extraneous issues aside

Seems to be persistent, ADSL person is when he was Mori Tamotsu
I'm in is not particularly difficult problem?

But from that point of view even if your site s that the age
The second sentence is 4 DSLAM or not I'm not the contacts?
In the home or office to the splitter and bridge taps
There will also be set up, if you are interested to communicate
I'll get over your eye and the transmission rate, DSLAM or the
I'm so Ikimasen

By the way, DSLAM is a Digital Subscriber Line Access Multiplexer
In short, the literal translation device "digital subscriber line access multiplexer" is.
Well, please think of the huge backbone concentrators.

... It's a problem, "training" is
As they wrote the description, and availability of sub-channels which
The central office ADSL DSLAM side, there is a user communicates with a modem and
So I decide, "or any sub-channels are available?" In addition to
There will be determined in consultation as well as speed here.

Users of ADSL modem and DSLAM central office consultations between the
We are determined considering the attenuation of the signal and noise, on the path
I'd like.

Problem of PDS technology of timing of OLT or output control

The problem of ..shine.. [akusesunettowa-ku] of the PDS technology etc. is not only specialized skills (exchange) taken up, and firmly a place because the technology as the problem of the transmission exchange equipment and the plant management that happens frequently as the main in this blog to be suppressed.

PDS uses a passive multidrop equipment by abbreviating Passive Double Star and is a diverging technology in this blog as for the optical access though thought the introduction in the past two or more times.

The imagination adheres for a moment even if said, "It is passive" in short, it is a splitter though might be painful.

It was "OLT" becoming the point in today's question.

OLT is abbreviation of Optical Line Terminal and a terminating set of an optical line as shown in the name.

ONU is opposite OLT ..that.. and becomes a terminating set on bureau [**] side on the user side though thinks the desire of [mazu] ONU as for the terminating set of light and the floatage by the terminating set set up.

Note it though it wrote even at the beginning because the problem related to the optical access around here is a problem of frequent occurrence in each subject.


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