IDC-5614BXL/VR+ , плохое качество линии

[Equinox]

Здравствуйте!
Прокомментируйте, пожалуйста, статистику.
Может,что-то можно сделать?

Заранее спасибо.

Inpro IDC Modems Diagnostics, Version 1.0.2.33
02.03.04 19:35:50 - Outbound Call by Remote Access
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:03:20
Termination Reason........... NO REMOTE RESPONSE
Tx Rate (Last/Init/Min/Max).. 14400/14400/12000/21600 bps
Rx Rate (Last/Init/Min/Max).. 4800/ 7200/ 4800/ 9600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 13
Tx/Power Drop/Rx Level....... 15/0/27
SNR Last/Min/Max............. 22/17/22
Highest Rx/Tx State.......... 67/84
EQM Sum...................... 0000
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/2/1
Renegs Issued/Granted........ 2/2
FForwards/FBacks/Denied...... 2/0/0
Forced FB/FB after FF/MaxREJ. 0/0/3
Last dialed number........... P1487272
Flex fail


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 3200
Carrier Frequency Hz, Rx/Tx.. 1829/1829
EQM Value (Last/Min/Max)..... 13/7/127
EQM Hits..................... 0
EQM Last 10 Readings......... 8 21 12 12 10 10 26 22 14 13
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallforward due to Low EQM
Reason for V.34 Fallback..... Data Pump decision to Fallback in Phase 2
Last Retrain/Reneg Time...... 1 minutes ago
Handshake Time/Retries....... 23 seconds/0
Non-linear Encoding, Rx/Tx... OFF/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......... 2,6
Last Rx/Tx State............. 47/60
Energy at 3750Hz/Average .... 647/148
AGC Gain (Last/Min/Max)...... 70/63/70
Detection of 120 Hz Tones.... Yes
Detection of Dual PCM........ No
V.8 Negotiation Started...... Yes
V.8bis Success............... No
V.8bis CRe,CRd,CL,MS,ACK,NAK. No/No/No/No/No/No
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
Workaround Used.............. V90 Phase 2 Escape
Workaround Used.............. Rate Reneg Failure (At 64 or 84)
Workaround Used.............. ABCODE check (Machine Gun Noise)
Error Correction Status Byte. ADP:R ODP:T
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/13
Frames Errors, Rx/Tx......... 13/3 (2,6%/1,6%)
Frames Count, Rx/Tx.......... 491/192
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 20
Error Control Link NAKs...... 3
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 5 045
Characters Sent.............. 4 398
Average CPS, Rx/Tx........... 25/21
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 49

Inpro IDC Modems Diagnostics, Version 1.0.2.33
02.03.04 21:54:27 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:01:57
Termination Reason........... RETRAIN FAILURE
Tx Rate (Last/Init/Min/Max).. 16800/12000/12000/19200 bps
Rx Rate (Last/Init/Min/Max).. 7200/ 4800/ 4800/ 7200 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 119
Tx/Power Drop/Rx Level....... 15/0/NA
SNR Last/Min/Max............. 20/20/22
Highest Rx/Tx State.......... 67/84
EQM Sum...................... 0000
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/0/3
Renegs Issued/Granted........ 5/0
FForwards/FBacks/Denied...... 2/3/0
Forced FB/FB after FF/MaxREJ. 0/2/2
Last dialed number........... P1487272
Flex fail 9481834347EB


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 3200
Carrier Frequency Hz, Rx/Tx.. 1829/1829
EQM Value (Last/Min/Max)..... 119/0/127
EQM Hits..................... 0
EQM Last 10 Readings......... 127 127 112 112 127 127 103 77 105 105
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Reason for V.34 Fallback..... Data Pump decision to Fallback in Phase 2
Last Retrain/Reneg Time...... 0 minutes ago
Handshake Time/Retries....... 25 seconds/0
Non-linear Encoding, Rx/Tx... OFF/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......... 2,3
Last Rx/Tx State............. 21/20
Energy at 3750Hz/Average .... 882/698
AGC Gain (Last/Min/Max)...... NA/28/91
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...... Unknown
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 0/3
Frames Errors, Rx/Tx......... 3/7 (3,9%/2,6%)
Frames Count, Rx/Tx.......... 76/273
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 26
Error Control Link NAKs...... 7
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 6 827
Characters Sent.............. 3 077
Average CPS, Rx/Tx........... 58/26
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 72

[Technical Support]

Попробуйте прописать такую строку инициализации (в свойствах модема в Windows):

S91=12 S210.7=1 +MS=11,,,,,,9600

и покажите, что получилось в статистике. Желательно увидеть статистику 5..10-минутного соединения.
_________________
Inpro
Technical Support

[Equinox]

Прописал строку инициализации.
Получил следующую статистику.

Inpro IDC Modems Diagnostics, Version 1.0.2.33
03.03.04 22:07:12 - Outbound Call by Remote Access
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:10:26
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 9600/ 9600/ 9600/ 9600 bps
Rx Rate (Last/Init/Min/Max).. 7200/ 9600/ 2400/ 9600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 20
Tx/Power Drop/Rx Level....... 12/0/30
SNR Last/Min/Max............. 20/20/26
Highest Rx/Tx State.......... 85/87
EQM Sum...................... 0000
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 1/0/0
Renegs Issued/Granted........ 6/0
FForwards/FBacks/Denied...... 2/5/0
Forced FB/FB after FF/MaxREJ. 5/0/9
Last dialed number........... P1487272
Flex fail


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 2400
Carrier Frequency Hz, Rx/Tx.. 1600/1600
EQM Value (Last/Min/Max)..... 20/0/127
EQM Hits..................... 0
EQM Last 10 Readings......... 13 24 42 21 32 23 19 30 27 25
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallforward due to Low EQM
Last Retrain/Reneg Time...... 7 minutes ago
Handshake Time/Retries....... 23 seconds/0
Non-linear Encoding, Rx/Tx... OFF/OFF
Precoding, Rx/Tx............. OFF/OFF
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......... 2,3
Last Rx/Tx State............. 85/87
Energy at 3750Hz/Average .... 2975/625
AGC Gain (Last/Min/Max)...... 63/20/64
V.8 Negotiation Started...... Yes
V.8bis Success............... Yes
V.8bis CRe,CRd,CL,MS,ACK,NAK. Yes/No/Yes/No/Yes/No
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. ADP:R ODP:T
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/0
Frames Errors, Rx/Tx......... 256/9 (4,4%/0,6%)
Frames Count, Rx/Tx.......... 5788/1625
Error Control Frame Size..... V.42 LAPM (64)
Error Control Timeouts....... 11
Error Control Link NAKs...... 9
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 254 406
Characters Sent.............. 57 104
Average CPS, Rx/Tx........... 406/91
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 50

[Technical Support]

Ну вот, примерно так и будет работать. Попробуйте добавить в строку инициализации команду:

S210.4=1

Это запретить модему снижать скорость при большом количестве сбойных кадров на приём. Похоже, на линии импульсные помехи, которые "пробивают" на любой скорости. Если это не приведёт к существенному росту процента ошибок:

Frames Errors, Rx/Tx......... 256/9 (4,4%/0,6%)

то так и оставьте.
_________________
Inpro
Technical Support

[Equinox]

Добавил параметр. Ничего не изменилось.
Грустно смотреть на такую скорость. :(
Ничего не поделаешь - надо решать этот вопрос с телефонной компанией.
Спасибо Вам за поддержку!

[Technical Support]

Скорость определяется качеством телефонной связи. Цель введения параметра S210.4=1 состояла в том, чтобы уменьшить количество fall-forwards/fallbacks и тем самым увеличить производительность работы при приёме. При этом важно убедиться в том, что процент сбойных кадров остаётся в пределах разумного.
_________________
Inpro
Technical Support