Как поднять скорость 5614

[Yagr]

Здравствуйте, Technical Support.
Подскажите, пожалуйста, что еще можно сделать, чтобы поднять скорость. Не получается соединиться выше чем на 42,6.

Вот статистика:

Inpro IDC Modems Diagnostics, Version 1.0.2.33
05.10.2004 20:08:59 - Manual Diagnostics Request
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.25

Time Online.................. 00:12:25
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 28800/28800/28800/28800 bps
Rx Rate (Last/Init/Min/Max).. 42667/42667/42667/42667 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 35
Tx/Power Drop/Rx Level....... 15/2/15
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 00F0
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 0/0
FForwards/FBacks/Denied...... 0/0/0
Forced FB/FB after FF/MaxREJ. 0/0/1
Last dialed number........... T149
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)..... 35/26/44
EQM Hits..................... 0
EQM Last 10 Readings......... 37 28 37 32 36 35 37 39 32 36
Last Retrain/Reneg Status.... None
Last Retrain/Reneg Reason.... None
Last Retrain/Reneg Time...... 12 minutes ago
Handshake Time/Retries....... 22 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....... 3
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 2,3
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 3846/2086
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 100/100/100
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...... Unknown
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/1
Frames Errors, Rx/Tx......... 1/0 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 7970/3887
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 6
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 1 662 735
Characters Sent.............. 334 869
Average CPS, Rx/Tx........... 2231/449
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 58

[Yagr]

Еще раз здравствуйте.
После последних манипуляций:
S91=15 S210.7=1 S55.4=1 S17=48 S120=19
кое-что получилось, имеем такую статистику:

Inpro IDC Modems Diagnostics, Version 1.0.2.33
05.10.2004 21:16:24 - Manual Diagnostics Request
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.25

Time Online.................. 00:03:19
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 28800/28800/28800/28800 bps
Rx Rate (Last/Init/Min/Max).. 48000/49333/48000/49333 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 37
Tx/Power Drop/Rx Level....... 15/0/15
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 65/67
EQM Sum...................... 009F
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/1/0
Renegs Issued/Granted........ 0/0
FForwards/FBacks/Denied...... 0/0/0
Forced FB/FB after FF/MaxREJ. 0/0/1
Last dialed number........... T149
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)..... 37/30/127
EQM Hits..................... 0
EQM Last 10 Readings......... 41 39 38 37 35 38 38 35 37 34
Last Retrain/Reneg Status.... Remote Retrain
Last Retrain/Reneg Reason.... Remote Retrain
Last Retrain/Reneg Time...... 3 minutes ago
Handshake Time/Retries....... 22 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....... 3
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 2,6
Last Rx/Tx State............. 65/67
Energy at 3750Hz/Average .... 3696/2015
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 101/101/101
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........... 52000 bps (Reg.S120=19)
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.. 1/3
Frames Errors, Rx/Tx......... 3/0 (0,5%/0,0%)
Frames Count, Rx/Tx.......... 578/370
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 23
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 174 005
Characters Sent.............. 25 061
Average CPS, Rx/Tx........... 874/125
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 58

Что еще можно предпринять?

Спасибо. С уважением, Yagr.

[Technical Support]

В настройках и в статистике всё весьма неплохо. Единственное, что стоит изменить - настройку S120: 52000 бит/с на этой линии "не светит", поэтому лучше поставить S120=16 (48000) или S120=17 (49333).

И ещё: понаблюдайте за перетренировками по инициативе удалённого модема:

Retrains Issued/Granted/Auto. 0/1/0

Если они будут возникать часто (чаще, чем 1 в 8-10 минут, в среднем) - ограничьте скорость передачи Вашего модема, дописав "в хвост" строки инициализации команду:

+MS=,,,,,,26400
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Technical Support