Cea mai buna linie ADSL

Jubile, on 25th July 2009, 02:31, said:

Modul Interleaved ofera o corectie mai buna a erorilor = latenta mai mare (~20ms in plus)
Modul Fast, corectie mai slaba a erorilor = latenta mica.
Eu am fost si pe Interleaved (and au fost probleme cu linia) si acum sunt pe FAST, pe Interleaved FEC lucra mult mai mult, pe FAST abia am cateva erori, corectate si alea, bineinteles. Deci e mai bine pe FAST, e mai sigur pe Interleaved, doar din centrala se poate seta profilul portului.

Asa arata la mine:

ADSL State	Show Time
Data Path	Fast
Operation Mode	G.dmt.bisplus
Max. Bandwidth Down/Up(kbps)	23216 / 1297
Bandwidth Down/Up(kbps)	12288 / 1021
SNR Margin Down/Up(dB)	20.0 / 10.0
Attenuation Down/Up(dB)	14.0 / 11.1
Power Down/Up(dBm)	8.7 / 4.3
CRC Down/Up	1876/ 64
FEC  Down/Up	2395/ 0
HEC Down/Up	3010/ 0
System Up Time	208:43:44
DSL Up Time	208:43:13
PVC Select	
PPP Up Time	14:46:55

Edited by AirBoy, 25 July 2009 - 08:42.

Pentru a trece in modul Fast,trebuie facuta o solicitare la RTC?

Am scris mai sus, setarea se poate face doar din centrala, clientul nu are cum sa faca setari acolo, doar RTLC! Deci... suni la ei.

Uptime: 0 days, 5:20:11
Modulation: G.992.5 Annex A
Bandwidth (Up/Down) [kbps/kbps]: 509 / 6.143
Data Transferred (Sent/Received) [MB/GB]: 330,43 / 1,76
Output Power (Up/Down) [dBm]: -11,4294967291 / 2,0
Line Attenuation (Up/Down) [dB]: 0,0 / 14,0
SN Margin (Up/Down) [dB]: 27,0 / 26,0
Vendor ID (Local/Remote): TMMB / BDCM
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 0 / 0
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 31.250 / 0
HEC Errors (Up/Down): 30.698 / 0


targoviste, cam 200 m pana in centrala, speedtouch 585 . e vreo problema cu erorile alea?

Edited by twism007, 26 July 2009 - 17:09.

e posibil asa ceva ca pe UpStream sa am atenuare 5db si pe Downstream 30db?

sau raporteaza modemul gresit?

Daca e ok cum pot imbunatati acesti parametri ca 30 e cam mult...

one4win, on 26th July 2009, 18:41, said:

Pune un copy paste aici, sunt mai multe de vazut, nu doar atenuarea!

AirBoy, on 26th July 2009, 21:22, said:

uite un copy paste complet de la WAG200G:

parametrii liniei sunt praf...dar aparent doar pe downstream...cum e posibil?

DSL Status:   Connected
DSL Modulation Mode: G.dmt
DSL Path Mode: Fast
Downstream Rate: 4096 kbps
Upstream Rate: 512 kbps
Downstream Margin: 8 db
Upstream Margin: 16 db
Downstream Line Attenuation: 30 db
Upstream Line Attenuation: 5 db
Downstream Transmit Power: 0
Upstream Transmit Power: 0

one4win, on 27th July 2009, 02:05, said:

Nu prea stiu ce masuratori face WAG200G, il cunosc foarte bine, dar nu-ti fa probleme, cu modemul asta am vazut linie cu SNR de 3db, stabila.
Pune un ST516 sau un Huawei in loc, sa vedem ce zice cu ala.

AirBoy, on 27th July 2009, 08:12, said:

da, sa zicem ca snr-ul e ok...dar mi se pare dubioasa atenuarea...teoretic cei doi parametrii ar trebui sa fie relativ apropiati...si nu unul 30db si unu 5db...

din cate am mai citit teoretic atenuarea este de aprox 13db pe km...ce sa inteleg acuma...ca pe un fir de downstream este o distanta de 2.5km si pe upstream distanta pana in dslam sau centrala de cca 0.5km???? sau e undeva la ei o legatura proasta? sa chem o echipa de la tehnic?

@edit

incet incet ajung la concluzia ca linksys este o firma de rahat...au un renume bun, dar eu numai probleme am avut cu modemul asta...poate o sa ii fac un update de firmware

Edited by one4win, 27 July 2009 - 11:04.

one4win, on 27th July 2009, 12:00, said:

Poate fi si o legatura imperfecta, daca e atenuare mare pe down, mai mult ca sigur la tine, dar nu e lege, era bine daca puteai sa vezi parametrii cu un speedtouch sau un huawei, wag-ul, desi e un router foarte bun, la capitolul asta stie sa arate ciudatenii.

AirBoy, on 27th July 2009, 11:03, said:

ok merci de parere...

o sa incerc sa mai testez si cu un alt modem...

Alcatel ST516 - 7.4.3.2

			
Uptime:	0 days, 0:55:24
DSL Type:	ANSI T1.413
Bandwidth (Up/Down) [kbps/kbps]:	512 / 6.144
Data Transferred (Sent/Received) [kB/kB]:	0,00 / 0,00
Output Power (Up/Down) [dBm]:	11,5 / 7,5
Line Attenuation (Up/Down) [dB]:	17,5 / 11,0
SN Margin (Up/Down) [dB]:	28,0 / 10,0
Vendor ID (Local/Remote):	TMMB / BDCM
Loss of Framing (Local/Remote):	97 / 0
Loss of Signal (Local/Remote):	89 / 0
Loss of Power (Local/Remote):	0 / 0
Loss of Link (Remote):	0
Error Seconds (Local/Remote):	833 / 0
FEC Errors (Up/Down):	0 / 0
CRC Errors (Up/Down):	0 / 1
HEC Errors (Up/Down):	0 / 1 

pareri, sugestii, "reclamatii".. ?  

ms anticipat  

Edited by dekkay, 24 August 2009 - 15:09.

ADSL Firmware Version  : FwVer:3.7.6.1_A_TC3085 HwVer:T14.F7_3.0  
   Line State  : Showtime  
   Modulation  : ADSL2 PLUS  
   Annex Mode  : ANNEX_A  
  
--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

--------------------------------------------------------------------------------

    Downstream  Upstream    
  SNR Margin  : 33.1  24.6  db
  Line Attenuation  : 1.6  5.-2  db
  Data Rate  : 2048  509  kbps


nu inteleg line attenuation la upstream pare ciudat

Edited by RaymondDenis, 24 August 2009 - 23:01.

Ce parere aveti despre : Uptime: 2 days, 2:44:50
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 509 / 2.048
Data Transferred (Sent/Received) [kB/kB]: 0,00 / 0,00
Output Power (Up/Down) [dBm]: 12,0 / 15,0
Line Attenuation (Up/Down) [dB]: 12,5 / 23,5
SN Margin (Up/Down) [dB]: 30,5 / 32,0
Vendor ID (Local/Remote): TMMB / BDCM
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 0 / 0
FEC Errors (Up/Down): 1 / 0
CRC Errors (Up/Down): 1 / 60
HEC Errors (Up/Down): 506 / 47 ?

EDYMAX AR-7084gA  

Modulation  : ADSL2 PLUS  
Annex Mode  : ANNEX_A  
PPP connection time  : 6:13:30:26  
Line State  : Showtime  
                            Downstream  Upstream    
SNR Margin  :         27.9              10.5  db
Line Attenuation  :   5.0                7.-5  db
Data Rate  :            6144              509  kbps

Sunt cam la 1km de centrala.
Cum vi se par parametrii?

Edited by vid313, 26 August 2009 - 18:12.

copil_Cuminte19, on 26th August 2009, 18:12, said:

Putin cam mare atenuarea pe Down,dar e OK.

vid313, on 26th August 2009, 19:12, said:

Incearca si alta modulatie.

Multumesc,Romeo_NT.Se poate schimba cumva acea setare sa fie mai bine?

Incearca o alta modulatie,si revino cu rezultatele...