V.90 на средней линии

[Ilya05]

Здравствуйте.
Очень хотелось бы использовать V.90 на моей линии.
Но ретрейны просто замучали.
Использую прошивку 2.26
строки назначал AT%E3
S91=18 S210.7=1 S55.4=1 S17=64
щас приложу статистику idcdiag
Посоветуйте что можно сделать
P.S. V34 работает стабильно 33600 но очень хочется v.90 всетаки 4.5-5 скорость на модеме бывает.
Inpro IDC Modems Diagnostics, Version: 1.1.4.39
05.08.2005 10:54:58 - Direct Log Write Entry
--------------------------------------------------------
Modem Type: IDC-5614BXL/VR+ (Plus) Firmware Revision: V2.26
System Modem Init String: AT&FS38=0S95=41S115=0E0<cr>
User Modem Init String: S91=15 S210.7=1 S55.4=1 S17=64
Time Online.................. 00:06:30
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/28800/21600/31200 bps
Rx Rate (Last/Init/Min/Max).. 33333/32000/32000/40000 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 14
Tx/Power Drop/Rx Level....... 15/0/18
SNR Last/Min/Max............. 39/36/41
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 00DF
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/0/6
Renegs Issued/Granted........ 25/0
FForwards/FBacks/FEQM/Denied. 6/19/17/0
Forced FB/FB after FF/MaxREJ. 0/4/5
Last dialed number........... P7833333
V90 9481834347EB
Negotiation Result (Rx/Tx)... V.90 Issue 1 (asymmetric)/V.34
Symbol Rate (Rx/Tx).......... 8000/3200
Carrier Frequency Hz, Tx..... 1829
EQM Value (Last/Min/Max)..... 14/3/127
EQM Hits..................... 0
EQM Last 10 Readings......... 14 14 15 15 15 16 14 71 16 16
Fast Retrains (RRWS) Count... 6
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 1 minutes ago
Handshake Time/Retries....... 23 seconds/0
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....... 1
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 5,7
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 2740/1379
Auto Gain Amplitude, db...... 10
Rx Level (Last/Min/Max), -dB. 16,8/16,8/16,8
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........... 33333 bps (Reg.S120=5)
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.. 1/46
Frames Errors, Rx/Tx......... 46/6 (0,8%/0,3%)
Frames Count, Rx/Tx.......... 6084/1862
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 2
Error Control Link NAKs...... 6
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 823 294
Characters Sent.............. 107 354
Average CPS, Rx/Tx........... 2111/275
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 57

[Technical Support]

Похоже, что рассчитывать на устойчивый V.90 не приходится. Давайте попробуем ограничить скорость до 36000 бит/с и посмотрим, позволяет ли это избавиться от проблем:

S91=18 S210.7=1 S55.4=0 S17=64 +MS=,,,36000

Покажите статистику с такой строкой инициализации.
_________________
Inpro
Technical Support

[Ilya05]

Стало вроде еще хуже...

Inpro IDC Modems Diagnostics, Version: 1.1.4.39
05.08.2005 11:52:41 - Direct Log Write Entry
--------------------------------------------------------
Modem Type: IDC-5614BXL/VR+ (Plus) Firmware Revision: V2.26
System Modem Init String: AT&FS38=0S95=41S115=0E0<cr>
User Modem Init String: S91=18 S210.7=1 S55.4=0 S17=64 +MS=,,,36000

Time Online.................. 00:02:42
Termination Reason........... NO REMOTE RESPONSE
Tx Rate (Last/Init/Min/Max).. 24000/28800/24000/28800 bps
Rx Rate (Last/Init/Min/Max).. 33333/33333/30667/36000 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 127
Tx/Power Drop/Rx Level....... 18/0/27
SNR Last/Min/Max............. 41/39/41
Highest Rx/Tx State.......... 67/84
EQM Sum...................... 00EA
RBS Pattern.................. 00
Rate Drop.................... 1
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/0/4
Renegs Issued/Granted........ 6/2
FForwards/FBacks/FEQM/Denied. 1/5/4/0
Forced FB/FB after FF/MaxREJ. 0/1/4
Last dialed number........... P7923333
V90 9481834347E4


Negotiation Result (Rx/Tx)... V.90 Issue 1 (asymmetric)/V.34
Symbol Rate (Rx/Tx).......... 8000/3200
Carrier Frequency Hz, Tx..... 1829
EQM Value (Last/Min/Max)..... 127/4/127
EQM Hits..................... 0
EQM Last 10 Readings......... 127 127 127 127 125 126 8 9 8 12
Fast Retrains (RRWS) Count... 2
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 0 minutes ago
Handshake Time/Retries....... 25 seconds/0
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....... 6
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 9,8
Last Rx/Tx State............. 67/84
Energy at 3750Hz/Average .... 2609/1212
Auto Gain Amplitude, db...... 10
Rx Level (Last/Min/Max), -dB. 26,8/26,8/18,3
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........... 30667 bps (Reg.S120=3)
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...... External
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.. 1/14
Frames Errors, Rx/Tx......... 14/1 (1,1%/0,2%)
Frames Count, Rx/Tx.......... 1315/447
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 8
Error Control Link NAKs...... 1
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 142 700
Characters Sent.............. 16 032
Average CPS, Rx/Tx........... 880/98
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 68

[Technical Support]

Хуже стало потому, что день в разгаре, телефонная сеть нагружена.

Предположения подтверждаются: на V.34 результаты будут гораздо лучше, чем на V.90. Во всяком случае, днём. В ночное время и в выходные можно пробовать V.90.
_________________
Inpro
Technical Support

[Ilya05]

Попробывал на v.34
что здесь можно улучшить?

Inpro IDC Modems Diagnostics, Version: 1.1.4.39
05.08.2005 19:59:33 - Direct Log Write Entry
--------------------------------------------------------
Modem Type: IDC-5614BXL/VR+ (Plus) Firmware Revision: V2.26
System Modem Init String: AT&FS38=0S95=41S115=0E0<cr>
User Modem Init String: AT+MS=11

Time Online.................. 01:19:40
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 28800/33600/28800/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 14
Tx/Power Drop/Rx Level....... 18/0/24
SNR Last/Min/Max............. 37/37/37
Highest Rx/Tx State.......... 85/87
EQM Sum...................... 0021
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 7/0
FForwards/FBacks/FEQM/Denied. 3/4/0/0
Forced FB/FB after FF/MaxREJ. 3/1/10
Last dialed number........... P7923333
Flex fail


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 3429
Carrier Frequency Hz, Rx/Tx.. 1959/1959
EQM Value (Last/Min/Max)..... 14/11/127
EQM Hits..................... 0
EQM Last 10 Readings......... 13 14 16 14 16 13 13 16 16 15
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 5 minutes ago
Handshake Time/Retries....... 17 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......... 6,1
Last Rx/Tx State............. 85/87
Energy at 3750Hz/Average .... 2131/1082
Rx Level (Last/Min/Max), -dB. 22,7/23,1/22,7
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.. 1/193
Frames Errors, Rx/Tx......... 449/20 (0,4%/0,1%)
Frames Count, Rx/Tx.......... 126628/22316
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 23
Error Control Link NAKs...... 20
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 15 513 479
Characters Sent.............. 534 568
Average CPS, Rx/Tx........... 3245/111
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 61

[Technical Support]

Попробуйте прописать такую строку инициализации:

S91=15 S210.7=1 S210.4=1 S202.3=1 +MS=11

и покажите, что получается.

Во время проверки надо модем как следует нагрузить приёмом данных (скачайте какой-нибудь архив).
_________________
Inpro
Technical Support

[Ilya05]

С вашей строкой инициализации
скорость колебалась 3,5-3,7 kb/s

Inpro IDC Modems Diagnostics, Version: 1.1.4.39
05.08.2005 21:15:30 - Direct Log Write Entry
--------------------------------------------------------
Modem Type: IDC-5614BXL/VR+ (Plus) Firmware Revision: V2.26
System Modem Init String: AT&FS38=0S95=41S115=0E0<cr>
User Modem Init String: S91=15 S210.7=1 S210.4=1 S202.3=1 +MS=11

Time Online.................. 00:34:07
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/33600/16800/33600 bps
Rx Rate (Last/Init/Min/Max).. 33600/33600/16800/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 126
Tx/Power Drop/Rx Level....... 15/0/49
SNR Last/Min/Max............. 37/32/41
Highest Rx/Tx State.......... 85/87
EQM Sum...................... 0018
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 1/5/3
Renegs Issued/Granted........ 9/22
FForwards/FBacks/FEQM/Denied. 5/5/0/0
Forced FB/FB after FF/MaxREJ. 0/1/0
Last dialed number........... P7923333
Flex fail


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 3429
Carrier Frequency Hz, Rx/Tx.. 1959/1959
EQM Value (Last/Min/Max)..... 126/0/127
EQM Hits..................... 0
EQM Last 10 Readings......... 126 127 127 22 22 25 24 25 37 32
Last Retrain/Reneg Status.... Remote Rate Renegotiation
Last Retrain/Reneg Reason.... Remote Rate Renegotiation
Last Retrain/Reneg Time...... 2 minutes ago
Handshake Time/Retries....... 16 seconds/0
Non-linear Encoding, Rx/Tx... OFF/ON
Precoding, Rx/Tx............. OFF/ON
Shaping, Rx/Tx............... ON/ON
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 7
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 9,0
Last Rx/Tx State............. 85/87
Energy at 3750Hz/Average .... 2719/1262
Rx Level (Last/Min/Max), -dB. 47,9/47,9/20,1
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.. 1/21
Frames Errors, Rx/Tx......... 277/12 (0,5%/0,1%)
Frames Count, Rx/Tx.......... 60988/10248
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 17
Error Control Link NAKs...... 12
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 6 986 489
Characters Sent.............. 87 624
Average CPS, Rx/Tx........... 3413/42
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 86

[Technical Support]

Вполне прилично, но есть мысль попробовать избавиться от перетренировок и пересогласований скорости, которые довольно обильно запрашивал удалённый модем:

Retrains Issued/Granted/Auto. 1/5/3
Renegs Issued/Granted........ 9/22

Для этого попробуйте ограничить скорость передачи:

S91=15 S210.7=1 S210.4=1 S202.3=1 +MS=11,,,,,,14400

и подобрать ограничение таким образом, чтобы перетренировок/пересогласований было поменьше. Если их немного, "отпустите вожжи" (14400->16800->19200...). Если наоборот, их много - ужесточайте ограничение.
_________________
Inpro
Technical Support