Mодем 5614вхL/vl+ не хочет сонектиться на V90

[yal]

До покупки 5614 стоял ЛТ вин модем коннект был 44-47 тянул 4.5-6 кб
сийчас стоит IDC коннект стабильный 33600 и очень редко 42-44000
скорость закачки упала до 2.5-3.5 кб .что можно подкрутить в инит
строке для повышения скорости .Комп заземлён.
Лучшая статистика на без заземления
Inpro IDC Modems Diagnostics, Version 1.0.1.30
15.11.2003 23:41:50 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:34:41
Termination Reason........... LINK DISCONNECT
Tx Rate (Last/Init/Min/Max).. 26400/26400/24000/26400 bps
Rx Rate (Last/Init/Min/Max).. 38667/42667/37333/44000 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 13
Tx/Power Drop/Rx Level....... 15/1/16
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 00F1
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 12/1/7
Renegs Issued/Granted........ 15/0
FForwards/FBacks/Denied...... 9/18/0
Forced FB/FB after FF/MaxREJ. 0/3/2
Last dialed number........... P791133
V90 9481834347E5


Symbol Rate.................. 3200
Carrier Frequency Hz, Tx..... 1829
EQM Value (Last/Min/Max)..... 13/8/127
EQM Hits..................... 0
EQM Last 10 Readings......... 14 13 13 16 15 13 14 15 13 16
Last Retrain/Reneg Status.... Local Fast Retrain
Last Retrain/Reneg Reason.... Local Fallforward due to Low EQM
Last Retrain/Reneg Time...... 1 minutes ago
Handshake Time/Retries....... 41 seconds/1
Non-linear Encoding, Rx/Tx... OFF/ON
Precoding, Rx/Tx............. OFF/ON
Shaping, Rx/Tx............... OFF/ON
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 2
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 1,3
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 1595/1543
Auto Gain Amplitude, db...... 10
Detection of 120 Hz Tones.... Yes
Detection of Dual PCM........ No
V.90 RBS Pattern............. 00
V.90 Alternating RBS Pattern. 00
V.90 Digital Pad Value, db... 0,0
V.90 Optimal Speed........... No Limit (Reg.S120=0)
V.8 Negotiation Started...... Yes
V.8bis Success............... Yes
V.8bis CRe,CRd,CL,MS,ACK,NAK. Yes/No/Yes/No/Yes/No
Remote Manufacturer.......... Rockwell (Conexant)
Remote Licensee Code......... Rockwell (Conexant)
Remote Protocol Support...... K56flex V.90
Remote K56flex Version....... 03
Remote K56flex Capabilities.. Prototype mode is not supported
Remote Type.................. Server (Digital)
Remote supports Symbol Rates. 2743 2800 3429 3000(L) 3000(H)
Remote supports Symbol Rates. 3200(L) 3200(H) 3429(Tx)
Remote supports Power Drop... Yes
Remote is CME Modem.......... No
Remote supports V.34bis...... Yes
Remote Max SR Difference..... 0 Symbol Rate Steps
Remote Frequency Source...... Internal
Error Correction Status Byte. SYNC UA:T UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/33
Frames Errors, Rx/Tx......... 33/2 (0,2%/0,0%)
Frames Count, Rx/Tx.......... 21905/5125
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 23
Error Control Link NAKs...... 2
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 2811367
Characters Sent.............. 268264
Average CPS, Rx/Tx........... 1350/128
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 59


и с заземлением


Inpro IDC Modems Diagnostics, Version 1.0.1.30
16.11.2003 0:50:24 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:12:28
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 33600/33600/33600/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 37
Tx/Power Drop/Rx Level....... 15/2/25
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 0029
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 0/0
FForwards/FBacks/Denied...... 0/0/0
Forced FB/FB after FF/MaxREJ. 0/0/0
Last dialed number........... P791133
Flex fail 9481834347E5


Symbol Rate.................. 3429
Carrier Frequency Hz, Rx/Tx.. 1959/1959
EQM Value (Last/Min/Max)..... 37/32/46
EQM Hits..................... 0
EQM Last 10 Readings......... 41 37 37 38 39 36 40 41 38 41
Last Retrain/Reneg Status.... None
Last Retrain/Reneg Reason.... None
Reason for V.34 Fallback..... Data Pump decision to Fallback in Phase 2
Last Retrain/Reneg Time...... 12 minutes ago
Handshake Time/Retries....... 24 seconds/0
Non-linear Encoding, Rx/Tx... ON/ON
Precoding, Rx/Tx............. ON/ON
Shaping, Rx/Tx............... ON/ON
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 0
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 1,4
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 649/668
Detection of 120 Hz Tones.... No
Detection of Dual PCM........ Yes
V.8 Negotiation Started...... Yes
V.8bis Success............... Yes
V.8bis CRe,CRd,CL,MS,ACK,NAK. Yes/No/Yes/No/Yes/No
Remote Manufacturer.......... Rockwell (Conexant)
Remote Licensee Code......... Rockwell (Conexant)
Remote Protocol Support...... K56flex V.90
Remote K56flex Version....... 03
Remote K56flex Capabilities.. Prototype mode is not supported
Remote Type.................. Server (Digital)
Remote supports Symbol Rates. 2743 2800 3429 3000(L) 3000(H)
Remote supports Symbol Rates. 3200(L) 3200(H) 3429(Tx)
Remote supports Power Drop... Yes
Remote is CME Modem.......... No
Remote supports V.34bis...... Yes
Remote Max SR Difference..... 0 Symbol Rate Steps
Remote Frequency Source...... Internal
Error Correction Status Byte. SYNC UA:T UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/0
Frames Errors, Rx/Tx......... 0/0 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 490/274
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 1
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 49943
Characters Sent.............. 43318
Average CPS, Rx/Tx........... 66/57
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 68

[Technical Support]

Заземление ни при каких обстоятельствах не должно приводить к ухудшению качества связи (а именно это происходит в Вашем случае). Значит, с Вашим заземлением что-то не так.

Если у Вас есть вольтметр переменного тока, померяйте переменное напряжение между заземлением и каждым из проводов телефонной линии. Оно не должно превышать 1В. Если получите десятки вольт - разбирайтесь с заземлением.

Пока же есть смысл отключить заземление от модема. Это делается в разъёме кабеля, которым он поключается к последовательному порту модема. Откройте пластиковую коробочку разъёма и Вы увидите провод, припаянный к металлическому корпусу разъёма. Этот провод надо отключить и заизолировать.
_________________
Inpro
Technical Support

[yal]

действительно на земле был "левый " потенциал.
после более качественного заземления 120гц убралось
а сетуация с коннектом 33600 осталась
привожу статистику
Inpro IDC Modems Diagnostics, Version 1.0.1.30
16.11.2003 13:35:45 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:02:09
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 33600/33600/33600/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 32
Tx/Power Drop/Rx Level....... 15/2/24
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 0018
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 0/0
FForwards/FBacks/Denied...... 0/0/0
Forced FB/FB after FF/MaxREJ. 0/0/0
Last dialed number........... P791133
Flex fail 9481834347E5


Symbol Rate.................. 3429
Carrier Frequency Hz, Rx/Tx.. 1959/1959
EQM Value (Last/Min/Max)..... 32/26/37
EQM Hits..................... 0
EQM Last 10 Readings......... 31 28 31 32 32 32 30 31 31 29
Last Retrain/Reneg Status.... None
Last Retrain/Reneg Reason.... None
Reason for V.34 Fallback..... Data Pump decision to Fallback in Phase 2
Last Retrain/Reneg Time...... 2 minutes ago
Handshake Time/Retries....... 25 seconds/0
Non-linear Encoding, Rx/Tx... ON/ON
Precoding, Rx/Tx............. ON/ON
Shaping, Rx/Tx............... ON/ON
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 1
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 1,4
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 619/655
Detection of 120 Hz Tones.... No
Detection of Dual PCM........ Yes
V.8 Negotiation Started...... Yes
V.8bis Success............... Yes
V.8bis CRe,CRd,CL,MS,ACK,NAK. Yes/No/Yes/No/Yes/No
Remote Manufacturer.......... Rockwell (Conexant)
Remote Licensee Code......... Rockwell (Conexant)
Remote Protocol Support...... K56flex V.90
Remote K56flex Version....... 03
Remote K56flex Capabilities.. Prototype mode is not supported
Remote Type.................. Server (Digital)
Remote supports Symbol Rates. 2743 2800 3429 3000(L) 3000(H)
Remote supports Symbol Rates. 3200(L) 3200(H) 3429(Tx)
Remote supports Power Drop... Yes
Remote is CME Modem.......... No
Remote supports V.34bis...... Yes
Remote Max SR Difference..... 0 Symbol Rate Steps
Remote Frequency Source...... Internal
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/0
Frames Errors, Rx/Tx......... 0/0 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 22/39
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 2
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 647
Characters Sent.............. 1957
Average CPS, Rx/Tx........... 5/15
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 67

[Technical Support]

Детектор "120 Hz tones" работает только в режиме V.90. Если Вы внимательно сравните статистику соединения на V.34 в Ваших сообщениях, то увидите, что в обеих случаях (т.е. "до" и "после" переделки заземления) в них присутствует одна и та же строка:

Detection of 120 Hz Tones.... No

Так что ситуация никак не изменилась.

Заземление должен делать специалист - электрик. "Доморощенные методы" опасны для жизни и для Вашего оборудования.
_________________
Inpro
Technical Support