Apeytheias syndesh kartwn ethernet

[Apostolos Siotos]

George Daflidis-Kotsis wrote:
> 
> On Tue, Nov 16, 1999 at 03:06:51PM -0000, Xenitellis S wrote:
> 
> > >     Πρώτον δε πρέπει το καλώδιο να ξεπερνά τα 2-3 μέτρα.
> >
> >       To diko mou einai panw apo 8 metra kai doulevei teleia..  :)
> >       Isos exei shmasia pou einai apo to skliro kalwdio, pou to
> > xrisimopoioun
> >       Sti domimeni kalodiosi..
> 
> To cat5 kalwdio _tupika_ den prepei na 3epernaei ta 2 metra, wra praktika ti
> apokliseis mporei na uparxoun den gnwrizw.

ola exoyn na kanoyn me thn diafora epagkelmatikhs doyleias apo erasitexnhkh.
gegonos einai oti kai to cat5 mono toy den leei para pola... ti cat5 ? utp
h ftp? kai ftp-patch h instalation alla mporei kai s/ftp-patch (exoyme ksefygei kai
pleon legontai cat.5 BICC h kai cat.5+BICC) meta mporoyme na pame sta s/stp-patch
(prosoxh den einai oyte utp oyte ftp alla fysika kai oyte cat.5) opoy mporeis
na breis se cat.6/300Mhz h kai cat.7/600Mhz.
Tvra oso gia to sklhro kai to malako!!??? mallon einai poio eykolo na
prosdioriseis to kalvdio apo ta grammatakia poy einai kaue 30 cm (analoga me ton
kataskeyasth)
gia osoys exoyn aporeies.:
UTP:	Unshielded Twisted Pair
S/UTP:	Screened Unshielded Twisted Pair
FTP:	Foil shielded Twisted Pair
S/FTP:	Screened Foil shielded Twisted Pair
S/STP:	Screened Shielded Twisted Pair (braid shielded, each pair foil shielded)

ephdei paizoyn rolo kai ta kalvdia kai opvs eipan kai alloi paizei poly ma para poly
rolo to Twisted Pair kai o kvdikas xrvmatvn.(einai logos gia na mhn paizei ypologisths
me karta 100Mbps env sto idio kalvdio paizei allos me 10Mbps karta).
Epishs moy etyxe se BNC kalvdiosh na mhn paizei to dyktio giati kapoios poy huele na
prosuesei 3 staumoys ergasias brhke ena kalvdio kai to ebale.Sthn dokimh ola entajei
alla otan anoigan ola ta mhxanhmata (14)mparmpoytsala mias poy o anurvpos agnvhse thn
terastia diafora metajy RG58 me RG59.(oxi den einai epomenh ekdosh. to 58 exei 50 Ohm
kai to 59 75 Ohm to ena gia dyktia kai to allo gia video, koinvs paei h prosarmogh)


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