Прокомментируйте статистику

[Viol]

Здраствуйте! Прокомментируйте, пжл, статистику.

Inpro IDC Modems Diagnostics, Version 1.0.2.33
10.10.2005 22:43:53 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.25

№1
Time Online.................. 00:50:15
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 24000/28800/24000/28800 bps
Rx Rate (Last/Init/Min/Max).. 28800/28800/26400/28800 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 34
Tx/Power Drop/Rx Level....... 15/1/27
SNR Last/Min/Max............. 41/41/43
Highest Rx/Tx State.......... 85/87
EQM Sum...................... 0099
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/1/0
Renegs Issued/Granted........ 1/1
FForwards/FBacks/Denied...... 1/0/0
Forced FB/FB after FF/MaxREJ. 0/0/4
Last dialed number........... P92260996
Flex fail 9481834347E5


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 3429
Carrier Frequency Hz, Rx/Tx.. 1959/1959
EQM Value (Last/Min/Max)..... 34/20/119
EQM Hits..................... 0
EQM Last 10 Readings......... 36 35 40 37 38 36 34 34 38 35
Last Retrain/Reneg Status.... Remote Rate Renegotiation
Last Retrain/Reneg Reason.... Remote Rate Renegotiation
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....... 1
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 3.7
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 48/660
AGC Gain (Last/Min/Max)...... 71/71/71
Detection of 120 Hz Tones.... Yes
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.. 1/34
Frames Errors, Rx/Tx......... 34/10 (0.1%/0.1%)
Frames Count, Rx/Tx.......... 22974/10965
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 28
Error Control Link NAKs...... 10
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 3 316 419
Characters Sent.............. 957 173
Average CPS, Rx/Tx........... 1099/317
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 68

№2
Time Online.................. 00:15:25
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 31200/28800/28800/31200 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 35
Tx/Power Drop/Rx Level....... 15/2/28
SNR Last/Min/Max............. 37/37/37
Highest Rx/Tx State.......... 85/87
EQM Sum...................... 007E
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 1/0
FForwards/FBacks/Denied...... 1/0/0
Forced FB/FB after FF/MaxREJ. 0/0/4
Last dialed number........... P92260996
Flex fail 9481834347E5


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 3429
Carrier Frequency Hz, Rx/Tx.. 1959/1959
EQM Value (Last/Min/Max)..... 35/20/47
EQM Hits..................... 0
EQM Last 10 Readings......... 38 35 37 39 37 37 36 37 36 37
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...... 15 minutes ago
Handshake Time/Retries....... 23 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......... 3.7
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 117/1528
AGC Gain (Last/Min/Max)...... 67/67/67
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.. 1/14
Frames Errors, Rx/Tx......... 14/1 (0.1%/0.0%)
Frames Count, Rx/Tx.......... 24582/4896
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 3
Error Control Link NAKs...... 1
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 3 126 918
Characters Sent.............. 79 159
Average CPS, Rx/Tx........... 3380/85
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 65

№3
Time Online.................. 00:22:56
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................. 62
Tx/Power Drop/Rx Level....... 15/2/24
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 004C
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. 0/0/5
Last dialed number........... P92260996
Flex fail 9481834347E5


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 3429
Carrier Frequency Hz, Rx/Tx.. 1959/1959
EQM Value (Last/Min/Max)..... 62/47/97
EQM Hits..................... 0
EQM Last 10 Readings......... 52 55 58 55 50 51 60 56 60 57
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...... 22 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....... 1
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 3.7
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 109/1272
AGC Gain (Last/Min/Max)...... 79/79/79
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.. 1/42
Frames Errors, Rx/Tx......... 42/4 (0.5%/0.1%)
Frames Count, Rx/Tx.......... 8312/6954
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 31
Error Control Link NAKs...... 4
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 552 881
Characters Sent.............. 193 356
Average CPS, Rx/Tx........... 401/140
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 67

Я не очень понимаю в протоколах, поэтому спрошу проще:
Я так понимаю что скорости больше 33к на моей АТС не доступны?

[Technical Support]

[Viol]

Спасибо за экскурс!
V.90 Обязательно попробую. А что насчет статистики на V.34-все нормально?

[Viol]

Все сделал. Вот статистика, если это важно, то снималась она при закачке файла и соответствует статистике №2 из моего первого поста.
Пробывал несколько раз подключаться, винда выдает как правило 30,2Кб, что не больше чем на V.34, но по субьективным ощущениям работать стало быстрей да и канал в диспетчере задач загружен больше.

Inpro IDC Modems Diagnostics, Version 1.0.2.33
12.10.2005 0:20:36 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.25

Time Online.................. 00:03:01
Termination Reason........... LINK DISCONNECT
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 32000/30667/30667/32000 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 36
Tx/Power Drop/Rx Level....... 18/0/16
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 0125
RBS Pattern.................. 00
Rate Drop.................... 1
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 1/0
FForwards/FBacks/FEQM/Denied. 1/0/0/0
Forced FB/FB after FF/MaxREJ. 0/0/7
Last dialed number........... P92260996
V90 9481834347E5


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)..... 36/30/116
EQM Hits..................... 0
EQM Last 10 Readings......... 35 47 33 37 40 37 39 43 42 40
Last Retrain/Reneg Status.... Local Fast Retrain
Last Retrain/Reneg Reason.... Local Fallforward due to Low EQM
Last Retrain/Reneg Time...... 3 minutes ago
Handshake Time/Retries....... 29 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....... 2
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 4.4
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 162/2
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 96/96/96
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...... Internal
Error Correction Status Byte. SYNC UA:T UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/52
Frames Errors, Rx/Tx......... 52/1 (1.1%/0.1%)
Frames Count, Rx/Tx.......... 4737/904
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 0
Error Control Link NAKs...... 1
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 561 718
Characters Sent.............. 15 730
Average CPS, Rx/Tx........... 3103/86
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 59

[Viol]

В статистике, приведенной выше, написано что прошивка 2.25, но это не совсем так, так как, чтобы IdcDiag правильно выдала версию прошивки, надо переопределить модем, что я и сделал и на всякий случай снял новую статистику.

Inpro IDC Modems Diagnostics, Version 1.0.2.33
12.10.2005 0:35:03 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.26

Time Online.................. 00:12:00
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 32000/30667/30667/33333 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 38
Tx/Power Drop/Rx Level....... 18/0/16
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 0134
RBS Pattern.................. 00
Rate Drop.................... 2
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 5/0
FForwards/FBacks/FEQM/Denied. 3/2/1/0
Forced FB/FB after FF/MaxREJ. 1/1/7
Last dialed number........... P92260996
V90 9481834347E5


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)..... 38/31/91
EQM Hits..................... 0
EQM Last 10 Readings......... 38 37 39 42 40 42 42 42 36 41
Last Retrain/Reneg Status.... Local Fast Retrain
Last Retrain/Reneg Reason.... Local Fallforward due to Low EQM
Last Retrain/Reneg Time...... 2 minutes ago
Handshake Time/Retries....... 29 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....... 0
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 5.1
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 40/0
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 97/97/97
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...... Internal
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/70
Frames Errors, Rx/Tx......... 70/1 (1.1%/0.0%)
Frames Count, Rx/Tx.......... 6415/2814
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 4
Error Control Link NAKs...... 1
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 816 842
Characters Sent.............. 370 804
Average CPS, Rx/Tx........... 1134/515
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 59

[Technical Support]

Получилось несколько не так, как мы предполагали. Скорость соединения получилась несколько меньше, чем 33600 (в среднем - 32000 бит/с). Но, как нам кажется, результат будет более стабильным, чем при работе на V.34.

Имеется в виду, что из трёх статистик на V.34, которые Вы показали в начале темы, только одна была с соединением на 33600 бит/с. В двух других Вы получили 28800 и 31200 бит/с. Поэтому есть подозрение, что "в среднем" V.90 может оказаться быстрее, несмотря ни на что.

Проверить это можно только лишь временем и опытом.

Пока Вы склоняетесь к тому же мнению:

[Viol]

Inpro IDC Modems Diagnostics, Version 1.0.2.33
13.10.2005 10:01:12 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.26

Time Online.................. 00:11:03
Termination Reason........... LINK DISCONNECT
Tx Rate (Last/Init/Min/Max).. 24000/26400/24000/26400 bps
Rx Rate (Last/Init/Min/Max).. 31200/33600/28800/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 37
Tx/Power Drop/Rx Level....... 18/0/27
SNR Last/Min/Max............. 41/41/41
Highest Rx/Tx State.......... 85/87
EQM Sum...................... 0044
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 5/1
FForwards/FBacks/FEQM/Denied. 2/3/0/0
Forced FB/FB after FF/MaxREJ. 2/0/8
Last dialed number........... P92260996
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)..... 37/21/126
EQM Hits..................... 0
EQM Last 10 Readings......... 38 39 43 39 36 38 36 37 38 38
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallforward due to Low EQM
Last Retrain/Reneg Time...... 3 minutes ago
Handshake Time/Retries....... 23 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......... 4.3
Last Rx/Tx State............. 85/87
Energy at 3750Hz/Average .... 194/2
AGC Gain (Last/Min/Max)...... 70/70/70
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:T UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/77
Frames Errors, Rx/Tx......... 77/14 (0.8%/0.5%)
Frames Count, Rx/Tx.......... 9372/2558
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 14
Error Control Link NAKs...... 14
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 1 242 322
Characters Sent.............. 134 619
Average CPS, Rx/Tx........... 1873/203
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 68


Inpro IDC Modems Diagnostics, Version 1.0.2.33
13.10.2005 10:13:42 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.26

Time Online.................. 00:07:13
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 32000/32000/29333/32000 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 39
Tx/Power Drop/Rx Level....... 18/0/16
SNR Last/Min/Max............. 41/41/41
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 013B
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 7/0
FForwards/FBacks/FEQM/Denied. 2/5/1/0
Forced FB/FB after FF/MaxREJ. 4/0/8
Last dialed number........... P92260996
V90 9481834347E5


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)..... 39/30/127
EQM Hits..................... 0
EQM Last 10 Readings......... 40 40 45 44 45 42 41 38 77 49
Last Retrain/Reneg Status.... Local Fast Retrain
Last Retrain/Reneg Reason.... Local Fallforward due to Low EQM
Last Retrain/Reneg Time...... 2 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....... 0
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 4.8
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 133/1
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 99/99/99
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........... 32000 bps (Reg.S120=4)
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.. 3/92
Frames Errors, Rx/Tx......... 92/10 (2.0%/0.8%)
Frames Count, Rx/Tx.......... 4531/1281
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 20
Error Control Link NAKs...... 10
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 468 668
Characters Sent.............. 73 248
Average CPS, Rx/Tx........... 1082/169
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 57


Впечатления такие:
В первой статистике канал очень редко бывает загружен полностью, скорость по ощущениям средняя.
Во второй (V.90) ничего точно сказать не могу, примерно также как и без S120=4, но скорость выдает не 30.2, а 32.

[Technical Support]

[Viol]

Большое спасибо за помощь, буду определятся.

[Technical Support]

Вот и ладненько!

Основной критерий "определения" - производительность при приёме. Понятно, что Вы не всякий раз нагружаете модем по максимуму. Поэтому можно использовать такой критерий, как среднюю скорость на приём. Например, если Вы видите, что на V.34 модем, в основном, принимает на 28800, а при работе на V.90 чаще всего бывает 32000 бит/с, то лучше пользоваться V.90.
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Inpro
Technical Support

[Viol]

Учтем, кстати, сейчас выдало целых 33.6

[Technical Support]

33600, безусловно, лучше 32000. Вопросов два:

1. Насколько часто получается такой замечательный результат?

2. Удаётся ли модему удержаться на 33600 бит/с продолжительное время или он быстро скатывается на более низкую скорость.

Кстати, для ответа на второй вопрос Вы можете понаблюдать за индикатором HS, предварительно настроив S50 (см. "Руководство пользователя").

В общем, средства и методы исследования определены, задача Вам понятна... дерзайте и решайте, какой из протоколов Вам больше подходит
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Inpro
Technical Support