Časté krátké výpadky adsl

[vincik]

Nepravidelně v intervalu asi 1-2 hodiny mi padá internet. Výpadek trvá asi 1-3 minut. Restart modemu nic neurychlí takže si myslím že v hardweru problém není. Navíc sem modemů zkoušel víc. Problém je že na vsi nic jiného než adsl neseženu. Rychlost mám 300kb/s download a 50kb/s upload. To je max daná vzdáleností od ústředny. Ať to byl internet od O2 Tmobile nebo raiokomunikaci vždy max tato rychlost. Jdá se s tím něco dělat? Nějaké nastavení modemu? Nastavit třeba rychlost manuálně na polovinu aby se to nezahlcovalo? Nedá se něco vyřešit s poskytovatelem? Díky za odpověď

[Butch]

Jak daleko jsi od ustredny?
Zkusil bych pro sychr jeste jinej kabel mezi modemem a telefonni zasuvkou.
Predpokladam ze jedes bez splitteru.

[vincik]

rozumí někdo těmto číslům? je to "DSL line status". stále bojuju s adsl netem na vesnici. je to bída. ve večerní špičce (7-9 hodina) to padá co deset minut.

noise margin upstream: 7 db
output power downstream: 17 db
attenuation upstream: 31 db
attainable rate upstream: 640 kbps
SATN upstream: 0 db
carrier load: number of bits per symbol(tone)
tone 0- 31: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 32- 63: 05 67 77 78 88 88 87 88 78 77 75 65 43 00 00 00
tone 64- 95: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 96-127: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 128-159: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 160-191: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 192-223: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 224-255: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 256-287: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 288-319: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 320-351: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 352-383: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 384-415: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 416-447: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 448-479: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 480-511: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
noise margin downstream: 7 db
output power upstream: 12 db
attenuation downstream: 62 db
attainable rate downstream: 2784 kbps
SATN downstream: 0 db
carrier load: number of bits per symbol(tone)
tone 0- 31: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 32- 63: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 64- 95: 33 35 55 77 99 9a ab ba bb bb bb bb ba bb ab aa
tone 96-127: 0a aa aa aa 99 99 98 88 87 87 77 77 67 76 66 63
tone 128-159: 45 65 55 55 65 65 45 55 65 55 24 65 55 66 65 55
tone 160-191: 50 64 53 63 45 32 20 00 00 00 00 00 00 00 00 22
tone 192-223: 02 00 22 02 00 00 20 00 00 00 00 00 00 00 00 00
tone 224-255: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 256-287: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 288-319: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 320-351: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 352-383: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 384-415: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 416-447: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 448-479: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
tone 480-511: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
version: 32303130303330393030303030303030
serial: 34303a34613a30333a63623a65643a6334
id: 2e2e5a363630574d0000000000000000
line rate up: 576 kbps
line rate down: 2752 kbps
ES: 300
CV fa: 3455
CV inter: 0
CVFE fa: 1
CVFE inter: 0
FEC fa: 0
FEC inter: 0
FECFE fa: 0
FECFE inter: 0

[Eddward]

a co potrebujes vediet?

z tychto udajov su vypadky celkom jasne, linka je velmi velmi zla
noise margin downstream: 7 db
attenuation downstream: 62 db

62dB je velmi vysoke tlmenie linky, pretoze si velmi daleko od najblizsej DSL ustredne kde si napojeny, bude to aj takych 4.5km a to je velmi vela
cim nizsie attenuation tym lepsie

noise margin 7dB z toho samozrejme vyplyva - to je rezerva pre spojenie s ustrednou,
cim vyssie tym lepsie, cim vyssia hodnota tym mas väcsiu rerzervu pre udrzanie spojenia... podla toho aky mas kvalitny router/modem tak od urcitej nizkej hodnoty ti moze vypadnut spojenie
niektore routre udrzia spojenie az k 0dB, niektore maju problem aj so 6dB
stabilita spojenia tiez zavisi od technogie DSL, ADSL2/2+ drzi lepsi pri nizsich hodnotach ako ADSL

myslim ze jedine co by ti teoreticky pomohlo je poziadat operatora o znizenie (uz o tak nizskeho) dowstream profilu a teda aj celkovej rychlosti
teraz mas:
line rate down: 2752 kbps
cim nizsi by si mal rate, tym väcsi je noise margin, teda väcsia rezerva, a tym stabilnejsie spojenie
ostatne riesenia ako su vymena vedenia ci postavenie novej ustredne blizsie su asi nerealne

[Mastodont]

Eddward to napsal skvělě, snížení rychlosti je jediná cesta, příp. změna technologie/ISP (lokální Wi-Fi provider).

[vincik]

snížili mi rychlost na 110kb/s download a už je to stabilní