Как уменьшить число пересогласований на v90?

[NickNNT]

Имеются в наличии: IDC 5614 BXL/VR, довольно плохая линия и большое желание добится стабильной работы на V90.

Inpro IDC Modems Diagnostics, Version 1.0.2.33
02.11.2004 0:59:14 - Outbound Call by RemoteAccess
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.23

Time Online.................. 01:21:39
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/24000/24000/26400 bps
Rx Rate (Last/Init/Min/Max).. 36000/32000/32000/40000 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 19
Tx/Power Drop/Rx Level....... 17/0/21
SNR Last/Min/Max............. 39/34/39
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 0112
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 1/1/1
Renegs Issued/Granted........ 25/1
FForwards/FBacks/FEQM/Denied. 9/16/16/0
Forced FB/FB after FF/MaxREJ. 0/4/4
Last dialed number........... P1023434
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)..... 19/7/127
EQM Hits..................... 0
EQM Last 10 Readings......... 18 18 20 17 19 15 17 18 17 18
Last Retrain/Reneg Status.... Local Rate Renegotiation
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 3 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......... 3,5
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 1129/77
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... 86/86/86
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........... 37333 bps (Reg.S120=
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.. 1/30
Frames Errors, Rx/Tx......... 30/0 (0,3%/0,0%)
Frames Count, Rx/Tx.......... 11678/3533
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 3
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 1 455 862
Characters Sent.............. 186 751
Average CPS, Rx/Tx........... 297/38
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 60



Inpro IDC Modems Diagnostics, Version 1.0.2.33
01.11.2004 23:36:51 - Outbound Call by RemoteAccess
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.23

Time Online.................. 00:53:56
Termination Reason........... RETRAIN FAILURE
Tx Rate (Last/Init/Min/Max).. 24000/24000/24000/26400 bps
Rx Rate (Last/Init/Min/Max).. 34667/33333/32000/36000 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 8
Tx/Power Drop/Rx Level....... 17/0/NA
SNR Last/Min/Max............. 39/37/41
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 0211
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 2/2/8
Renegs Issued/Granted........ 39/1
FForwards/FBacks/FEQM/Denied. 18/21/21/0
Forced FB/FB after FF/MaxREJ. 0/2/3
Last dialed number........... P1023434
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)..... 8/3/127
EQM Hits..................... 0
EQM Last 10 Readings......... 8 9 7 8 7 53 8 21 6 14
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....... 37 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....... 1
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 3,8
Last Rx/Tx State............. 21/20
Energy at 3750Hz/Average .... 440/87
Auto Gain Amplitude, db...... 10
AGC Gain (Last/Min/Max)...... NA/87/87
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
Workaround Used.............. V90 Phase 2 Escape
Workaround Used.............. V34 Codex WA/V34 Stuck Phase2
Workaround Used.............. ABCODE check (Machine Gun Noise)
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 0/76
Frames Errors, Rx/Tx......... 76/13 (0,5%/0,2%)
Frames Count, Rx/Tx.......... 15911/8507
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 219
Error Control Link NAKs...... 13
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 1 872 754
Characters Sent.............. 373 079
Average CPS, Rx/Tx........... 578/115
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 91

В принципе, на v90 модем работает, но возникает ощущение, что он "болтается" туда сюда между скоростью 33333 и 40000. Уменьшение агресивности ничего не дает - пересогласований меньше не становится. Подскажите пожалуйста, что можно сделать, чтоб заставить модем зафиксироваться на определенной скорости, ну хотя бы уменьшить количество пересогласований что-ли...

[Technical Support]

Прежде всего, нажмите на кнопку "Detect modem" в IDC Diagnostics, чтобы не смущать посетителей строчкой:

Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.23

На самом деле у Вас установлена версия 2.26.