Прокомментируйте, пожалуйста, статистику

[Barral]

Здравствуйте!
Вот, сменил провайдера, поэтому интересно услышать мнение профессионалов и узнать можно ли что-либо улучшить...

Inpro IDC Modems Diagnostics, Version 1.0.2.33
25.02.2004 12:51:17 - Manual Diagnostics Request
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 05:25:06
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 45333/50667/45333/50667 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 39
Tx/Power Drop/Rx Level....... 15/2/18
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 0000
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 1/0/0
Renegs Issued/Granted........ 5/0
FForwards/FBacks/Denied...... 0/6/0
Forced FB/FB after FF/MaxREJ. 2/0/7
Last dialed number........... T183333
V90

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)..... 39/22/127
EQM Hits..................... 0
EQM Last 10 Readings......... 38 39 36 35 42 36 40 40 39 38
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 175 minutes ago
Handshake Time/Retries....... 21 seconds/0
Non-linear Encoding, Rx/Tx... OFF/OFF
Precoding, Rx/Tx............. OFF/OFF
Shaping, Rx/Tx............... OFF/OFF
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 6
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 3,5
Last Rx/Tx State............. 65/87
Energy at 3750Hz/Average .... 2402/326
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 95/95/95
Detection of 120 Hz Tones.... No
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........... 50667 bps (Reg.S120=1
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...... External
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/189
Frames Errors, Rx/Tx......... 701/5 (0,1%/0,0%)
Frames Count, Rx/Tx.......... 476398/43944
Error Control Frame Size..... V.42 LAPM (64)
Error Control Timeouts....... 4
Error Control Link NAKs...... 5
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 30 338 922
Characters Sent.............. 336 976
Average CPS, Rx/Tx........... 1555/17
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 61

[Boris]

Пропиши как минимум S210.7=1
S91=12 (подходит для большинства линий).
Если на твоей линии работает на S91=15, ставь 15.

[Barral]

Последовал твоему совету, кроме того ограничил скорость на приём и передачу, чтобы избавиться от пересогласований (AT S210.7=1 S91=15 +MS=12,,,45333,,,26400)
Вот, что получилось...

Inpro IDC Modems Diagnostics, Version 1.0.2.33
26.02.2004 8:50:35 - Outbound Call by RemoteAccess
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:14:09
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 45333/45333/45333/45333 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 26
Tx/Power Drop/Rx Level....... 15/0/18
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 00D6
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. 0/0/4
Last dialed number........... T183333
V90

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)..... 26/22/33
EQM Hits..................... 0
EQM Last 10 Readings......... 26 27 30 29 28 25 28 26 28 30
Last Retrain/Reneg Status.... None
Last Retrain/Reneg Reason.... None
Last Retrain/Reneg Time...... 14 minutes ago
Handshake Time/Retries....... 21 seconds/0
Non-linear Encoding, Rx/Tx... OFF/OFF
Precoding, Rx/Tx............. OFF/OFF
Shaping, Rx/Tx............... OFF/OFF
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 6
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 2,6
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 2494/340
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 95/95/95
Detection of 120 Hz Tones.... No
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............... 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...... External
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/24
Frames Errors, Rx/Tx......... 24/2 (0,1%/0,1%)
Frames Count, Rx/Tx.......... 26121/2595
Error Control Frame Size..... V.42 LAPM (64)
Error Control Timeouts....... 2
Error Control Link NAKs...... 2
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 1 725 751
Characters Sent.............. 46 466
Average CPS, Rx/Tx........... 2032/54
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 61

Есть какие-нибудь мысли, что ещё можно сделать?

[Peter Stoliarov]

Я думаю, что при таком коннекте не стоит ограничивать скорости модема. Все-таки пять ренегов и один ретрейн за пять часов - это очень мало. Так что пусть модем вытягивает из линии все, что можно

[Marko Antonio]

Поностью согласен с предыдущим "оратором" !
Хочу только добавить, что последнее пересогласование было три часа назад, т. е. можно сказать, что эта неприятность отсутствует как класс - так зачем "осаживать" модем - пусть бегает, как ему нравится!

[Barral]

Попробовал вот так S210.7=1 S91=15 S17=0
Получил:

Inpro IDC Modems Diagnostics, Version 1.0.2.33
27.02.2004 16:36:29 - Manual Diagnostics Request
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 01:08:28
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 46667/46667/46667/46667 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 31
Tx/Power Drop/Rx Level....... 15/0/18
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 0000
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. 0/0/5
Last dialed number........... T183333
V90

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)..... 31/26/80
EQM Hits..................... 0
EQM Last 10 Readings......... 36 32 32 28 34 29 35 40 34 34
Last Retrain/Reneg Status.... None
Last Retrain/Reneg Reason.... None
Last Retrain/Reneg Time...... 68 minutes ago
Handshake Time/Retries....... 21 seconds/0
Non-linear Encoding, Rx/Tx... OFF/OFF
Precoding, Rx/Tx............. OFF/OFF
Shaping, Rx/Tx............... OFF/OFF
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 6
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 3,2
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 2483/339
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 95/95/95
Detection of 120 Hz Tones.... No
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........... 46667 bps (Reg.S120=15)
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...... External
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/119
Frames Errors, Rx/Tx......... 119/1 (0,1%/0,0%)
Frames Count, Rx/Tx.......... 113475/11821
Error Control Frame Size..... V.42 LAPM (64)
Error Control Timeouts....... 2
Error Control Link NAKs...... 1
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 8 193 424
Characters Sent.............. 209 752
Average CPS, Rx/Tx........... 1994/51
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 61

Подскажите, пожалуйста, имеет ли смысл экспериментировать дальше или стоит остановиться на достигнутом?

[Peter Stoliarov]

S17=0 нельзя давать ни в коем случае!!!
Минимальное разумное значение составляет 48, а лучше всего для V90-коннектов использовать S17=64.

[Barral]

Теперь строка инициализации выглядит так: S210.7=1 S91=15 S17=64
Вот статистика:
Inpro IDC Modems Diagnostics, Version 1.0.2.33
28.02.2004 12:15:04 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 02:39:54
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 46667/46667/46667/46667 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 38
Tx/Power Drop/Rx Level....... 15/0/18
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 00C9
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 1/0
FForwards/FBacks/Denied...... 0/1/0
Forced FB/FB after FF/MaxREJ. 1/0/7
Last dialed number........... T183333
V90


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)..... 38/27/125
EQM Hits..................... 0
EQM Last 10 Readings......... 38 35 38 36 33 39 43 39 39 37
Last Retrain/Reneg Status.... Local Fast Retrain
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 149 minutes ago
Handshake Time/Retries....... 20 seconds/0
Non-linear Encoding, Rx/Tx... OFF/OFF
Precoding, Rx/Tx............. OFF/OFF
Shaping, Rx/Tx............... OFF/OFF
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 6
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 3,2
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 2492/340
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 95/95/95
Detection of 120 Hz Tones.... No
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........... 53333 bps (Reg.S120=20)
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...... External
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/230
Frames Errors, Rx/Tx......... 486/99 (0,1%/0,1%)
Frames Count, Rx/Tx.......... 620254/143758
Error Control Frame Size..... V.42 LAPM (64)
Error Control Timeouts....... 27
Error Control Link NAKs...... 99
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 37 740 037
Characters Sent.............. 4 513 609
Average CPS, Rx/Tx........... 3933/470
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 61

[Marko Antonio]

Ну и славно, пусть так оно и будет, чего ещё желать!
Мне б такой коннект...

[Barral]

Народ, всем Вам большое человеческое спасибо за помощь!

[Oxy]

[Peter Stoliarov]

В данном конкретном случае - слава Богу, нет. Из-за того, что в регистре S120 было значение соответствующее оптимальной для того коннекта скорости.
Но вообще в подобных случаях (S17=0S120=0) модем будет коннектиться сначала на 56000 и, скорее всего, не удержится на этой скорости, и, изменив значение S120, свалится на 54667. И так далее, пока связь не разорвется по таймауту, либо модем найдет-таки оптимальную скорость (если она окажется довольно высока).
Так что пусть уж лучше модем сразу правильно выбирает скорость

[Ilja]

Вопрос близко к теме. Как вы думаете, почему так много перетренеровок и почему НЧ помеха то появляется, то исчезает? Пропадает обычно утром часов в шесть -девять (нестабильно). В остальное время есть всегда.







Одна из самых худших:

Inpro IDC Modems Diagnostics, Version 1.0.2.33
23.03.2004 5:41:24 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 02:06:02
Termination Reason........... NO REMOTE RESPONSE
Tx Rate (Last/Init/Min/Max).. 26400/28800/26400/28800 bps
Rx Rate (Last/Init/Min/Max).. 52000/49333/49333/53333 bps
Modulation................... V.90
Protocol/Compression......... LAP-M (SREJ)/V.42bis
Line Quality................. 126
Tx/Power Drop/Rx Level....... 15/0/27
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 48/87
EQM Sum...................... 0063
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 45/0/11
Renegs Issued/Granted........ 57/109
FForwards/FBacks/Denied...... 56/46/0
Forced FB/FB after FF/MaxREJ. 0/3/0
Last dialed number........... T52хххх
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)..... 126/0/127
EQM Hits..................... 0
EQM Last 10 Readings......... 127 127 27 26 27 25 31 31 24 31
Last Retrain/Reneg Status.... Local Retrain
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 1 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....... 3
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 7,6
Last Rx/Tx State............. 48/62
Energy at 3750Hz/Average .... 1728/288
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 69/69/99
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........... 49333 bps (Reg.S120=17)
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.. 2/5
Frames Errors, Rx/Tx......... 5/0 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 293786/87964
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 73
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 36 919 169
Characters Sent.............. 2 094 745
Average CPS, Rx/Tx........... 4882/277
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 70




Без НЧ помех:





Inpro IDC Modems Diagnostics, Version 1.0.2.33
21.03.2004 5:36:50 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 01:26:13
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/28800/24000/28800 bps
Rx Rate (Last/Init/Min/Max).. 52000/48000/46667/56000 bps
Modulation................... V.90
Protocol/Compression......... LAP-M (SREJ)/V.42bis
Line Quality................. 28
Tx/Power Drop/Rx Level....... 15/0/16
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 65/87
EQM Sum...................... 00A4
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 14/0/9
Renegs Issued/Granted........ 86/58
FForwards/FBacks/Denied...... 86/14/0
Forced FB/FB after FF/MaxREJ. 0/8/0
Last dialed number........... T52хххх
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)..... 28/10/127
EQM Hits..................... 0
EQM Last 10 Readings......... 26 27 27 27 28 29 29 29 28 29
Last Retrain/Reneg Status.... Remote Rate Renegotiation
Last Retrain/Reneg Reason.... Remote Rate Renegotiation
Last Retrain/Reneg Time...... 1 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....... 3
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 6,3
Last Rx/Tx State............. 65/87
Energy at 3750Hz/Average .... 1727/287
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 99/99/99
Detection of 120 Hz Tones.... No
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...... 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.. 1/4
Frames Errors, Rx/Tx......... 4/0 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 198797/81484
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 59
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 25 048 861
Characters Sent.............. 2 058 282
Average CPS, Rx/Tx........... 4842/397
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 59




Неплохая:

Inpro IDC Modems Diagnostics, Version 1.0.2.33
22.03.2004 7:03:28 - Outbound Call by Remote Access
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:59:10
Termination Reason........... RETRAIN FAILURE
Tx Rate (Last/Init/Min/Max).. 28800/26400/26400/28800 bps
Rx Rate (Last/Init/Min/Max).. 53333/48000/48000/53333 bps
Modulation................... V.90
Protocol/Compression......... LAP-M (SREJ)/V.42bis
Line Quality................. 85
Tx/Power Drop/Rx Level....... 15/0/NA
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 00A0
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 0/0/1
Renegs Issued/Granted........ 4/4
FForwards/FBacks/Denied...... 3/1/0
Forced FB/FB after FF/MaxREJ. 0/0/0
Last dialed number........... T52хххх
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)..... 85/13/127
EQM Hits..................... 0
EQM Last 10 Readings......... 103 104 127 127 93 25 30 29 24 29
Last Retrain/Reneg Status.... Local Fast Retrain
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 1 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....... 3
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 7,3
Last Rx/Tx State............. 21/20
Energy at 3750Hz/Average .... 1811/301
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... NA/99/99
Detection of 120 Hz Tones.... No
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........... 50667 bps (Reg.S120=18)
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
Workaround Used.............. V90 Phase 2 Escape
Workaround Used.............. Rate Reneg Failure (At 64 or 84)
Workaround Used.............. V34 Codex WA/V34 Stuck Phase2
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.. 0/6
Frames Errors, Rx/Tx......... 6/0 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 168966/51073
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 12
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 21 470 502
Characters Sent.............. 1 320 277
Average CPS, Rx/Tx........... 6048/371
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 95




Кстати, когда ставил s17=0, действительно соединялся на 56000 но всеравно потом падал до стандартных 49-50. Ставил s17=255, соединялся на 33000.

[Technical Support]

Ситуация такая: цифровая АТС, небольшое удаление от АТС (т.е. почти идеальные условия) и вместе с тем - периодически возникающие мощные помехи. Это они иногда вызывают срабатывание детектора НЧ помех, они заставляют модем ретрейниться. И вот ещё что: они настолько сильны, что заставляют удалённый модем запрашивать пересогласования скорости. Renegs/Granted почти никогда не встречаются на цифровых АТС, поскольку в направлении "к провайдеру" (восходящий поток) используется модуляция QAM (как в V.34), которая более устойчива к помехам (да и скорости намного ниже).

В общем, Вам нужно искать врага. Сначала неплохо было бы выяснить, где источник помех. Попробуйте соединиться с другим модемом, подключённым к Вашей же АТС (идеальный вариант - найти провайдера с цифровым сервером, подключённым к той же АТС). Если помехи остались - с большой вероятностью источник где-то в абонентской линии (вполне возможно, что прямо у Вас в квартире). Попробуйте отключить все другие телефоны (подключённые параллельно модему).
_________________
Inpro
Technical Support

[Ilja]

Спасибо за ответ. Возникли вопросы. Я догадываюсь, как вы определили, что у меня цифоровая АТС, Но как вы определили, что она расположена близко?
Провел несколько сеансов с модемом на моей АТС. Вот одноа статистика:


Inpro IDC Modems Diagnostics, Version 1.0.2.33
28.03.2004 16:22:40 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:04:07
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/26400 bps
Rx Rate (Last/Init/Min/Max).. 31200/31200/31200/31200 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 20
Tx/Power Drop/Rx Level....... 15/0/27
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 0016
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........... NA
Flex fail


Negotiation Result (Rx/Tx)... V.34/V.34
Symbol Rate.................. 3200
Carrier Frequency Hz, Rx/Tx.. 1829/1920
EQM Value (Last/Min/Max)..... 20/17/24
EQM Hits..................... 0
EQM Last 10 Readings......... 19 20 22 21 22 22 23 20 22 22
Last Retrain/Reneg Status.... None
Last Retrain/Reneg Reason.... None
Last Retrain/Reneg Time...... 4 minutes ago
Handshake Time/Retries....... 11 seconds/0
Non-linear Encoding, Rx/Tx... ON/ON
Precoding, Rx/Tx............. ON/OFF
Shaping, Rx/Tx............... ON/ON
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 10
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 1,0
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 40/134
AGC Gain (Last/Min/Max)...... 69/69/69
Detection of 120 Hz Tones.... No
Detection of Dual PCM........ Yes
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
Error Correction Status Byte. ADP:T ADP:R ODP:R
Error Correction Status Byte. SYNC UA:T UA:R SAMBE:R XID:T XID:R
Frames REJected, Last/Total.. 1/0
Frames Errors, Rx/Tx......... 0/7 (0,0%/2,8%)
Frames Count, Rx/Tx.......... 59/250
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 25
Error Control Link NAKs...... 7
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 949
Characters Sent.............. 2 715
Average CPS, Rx/Tx........... 3/10
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 70


Делел два соединения, как видите НЧ помехи нет. Сразу после этого подсоединился к своему провайдеру, и помеха появилась.
подробнее опишу поведение модема. Он соединяется и начинает поднимать скорость. Примерно достигнув скорости HS (50 или 52) он начинает перетренировку, после чего опять поднимает скорость. И так постоянно. Но иногда бывают моменты тишины -- полчаса, час. Видно в это время помехи нет.
Моя строка нинициализации:

s120=16s202.7=1s210.4=1s41.2=1s41.6=1m4


Последняя статистика:



Inpro IDC Modems Diagnostics, Version 1.0.2.33
29.03.2004 5:05:33 - Outbound Call by MODEMSPD.EXE
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.24

Time Online.................. 00:45:38
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/28800/26400/28800 bps
Rx Rate (Last/Init/Min/Max).. 52000/48000/45333/53333 bps
Modulation................... V.90
Protocol/Compression......... LAP-M (SREJ)/V.42bis
Line Quality................. 47
Tx/Power Drop/Rx Level....... 15/0/16
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 65/87
EQM Sum...................... 0088
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 11/0/2
Renegs Issued/Granted........ 35/33
FForwards/FBacks/Denied...... 35/11/0
Forced FB/FB after FF/MaxREJ. 0/5/0
Last dialed number........... TXXXXXX
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)..... 47/12/127
EQM Hits..................... 0
EQM Last 10 Readings......... 24 24 25 22 22 22 23 21 21 21
Last Retrain/Reneg Status.... Remote Rate Renegotiation
Last Retrain/Reneg Reason.... Remote Rate Renegotiation
Last Retrain/Reneg Time...... 6 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....... 3
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 9,4
Last Rx/Tx State............. 65/87
Energy at 3750Hz/Average .... 1727/287
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........... 48000 bps (Reg.S120=16)
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.. 1/3
Frames Errors, Rx/Tx......... 3/0 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 97009/31970
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 34
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 12 192 828
Characters Sent.............. 662 382
Average CPS, Rx/Tx........... 4453/241
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 59


Все телефоны подключены через вторую разетку модема.