Помогите найти оптимальный вариант

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У провайдера имеются три номера
при звонке на первые два коннект длится дольше, часто слышны ретрейны, особенно часто это происходит при звонке на второй номер. Но начальная скорость соединения при звонке на первые два номера выше.
Если звонить на третий номер начальный коннект всегда медленнее 50,6 но стабильность соединения вроде повыше. Что вы можете посоветовать в этой ситуации? Пытаться настраивать модем под первые два номера или оставить все как есть.
В настройках модема прописана следующая строка:
atm2 s17=48

АТС находится метрах в 200 от дома. Телефонная проводка имеет одну скрутку. Причем примерно половина телефонного провода медная, остальной кабель более новый и из белого металла наверное алюминий.

Привожу статистику соединений по всем трем номерам. Производилось скачивание файлов.

Inpro IDC Modems Diagnostics, Version 1.0.1.31
03.10.2004 1:33:47 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.23

Time Online.................. 00:11:49
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/31200 bps
Rx Rate (Last/Init/Min/Max).. 50667/54667/50667/54667 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 27
Tx/Power Drop/Rx Level....... 15/0/19
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 0078
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 1/0/0
Renegs Issued/Granted........ 2/2
FForwards/FBacks/Denied...... 0/3/0
Forced FB/FB after FF/MaxREJ. 2/3/11
Last dialed number........... T503932
V90 9481814347E0


Symbol Rate.................. 3200
Carrier Frequency Hz, Tx..... 1829
EQM Value (Last/Min/Max)..... 27/22/127
EQM Hits..................... 0
EQM Last 10 Readings......... 28 31 30 28 24 29 27 27 24 27
Last Retrain/Reneg Status.... Local Retrain
Last Retrain/Reneg Reason.... Local Fallback due to High EQM
Last Retrain/Reneg Time...... 5 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....... 2
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 3,2
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 8402/2516
Last AGC Gain Value.......... 89
Minimum AGC Gain Value....... 89
Maximum AGC Gain Value....... 89
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
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.. 1/53
Frames Errors, Rx/Tx......... 309/0 (0,7%/0,0%)
Frames Count, Rx/Tx.......... 43852/4750
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 0
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 3439595
Characters Sent.............. 48034
Average CPS, Rx/Tx........... 4851/67
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 62


Inpro IDC Modems Diagnostics, Version 1.0.1.31
03.10.2004 1:45:28 - Outbound Call by RemoteAccess
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.23

Time Online.................. 00:08:01
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 26400/26400/26400/28800 bps
Rx Rate (Last/Init/Min/Max).. 50667/54667/49333/54667 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 29
Tx/Power Drop/Rx Level....... 15/3/19
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/87
EQM Sum...................... 007A
RBS Pattern.................. 00
Rate Drop.................... 0
Digital Loss................. 2000
Retrains Issued/Granted/Auto. 2/0/0
Renegs Issued/Granted........ 1/1
FForwards/FBacks/Denied...... 1/2/0
Forced FB/FB after FF/MaxREJ. 0/0/7
Last dialed number........... T503933
V90 9481814347E0


Symbol Rate.................. 3200
Carrier Frequency Hz, Tx..... 1829
EQM Value (Last/Min/Max)..... 29/16/127
EQM Hits..................... 0
EQM Last 10 Readings......... 27 29 28 27 25 29 28 26 28 28
Last Retrain/Reneg Status.... Local Fast Retrain
Last Retrain/Reneg Reason.... Local Fallforward due to Low EQM
Last Retrain/Reneg Time...... 7 minutes ago
Handshake Time/Retries....... 35 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....... 2
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 3,2
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 8450/2531
Last AGC Gain Value.......... 89
Minimum AGC Gain Value....... 89
Maximum AGC Gain Value....... 89
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............... 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
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.. 0/38
Frames Errors, Rx/Tx......... 38/1 (0,1%/0,0%)
Frames Count, Rx/Tx.......... 25926/3246
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 1
Error Control Link NAKs...... 1
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 2315312
Characters Sent.............. 33089
Average CPS, Rx/Tx........... 4813/68
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 62



Inpro IDC Modems Diagnostics, Version 1.0.1.31
03.10.2004 2:00:38 - Outbound Call by RemoteAccess
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.23

Time Online.................. 00:12:48
Termination Reason........... LINK DISCONNECT
Tx Rate (Last/Init/Min/Max).. 28800/28800/28800/28800 bps
Rx Rate (Last/Init/Min/Max).. 50667/50667/50667/50667 bps
Modulation................... V.90
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 40
Tx/Power Drop/Rx Level....... 15/0/15
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 008E
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. 0/0/2
Last dialed number........... T756000
V90 9481834355E1


Symbol Rate.................. 3200
Carrier Frequency Hz, Tx..... 1829
EQM Value (Last/Min/Max)..... 40/29/52
EQM Hits..................... 0
EQM Last 10 Readings......... 37 36 33 32 37 35 35 35 34 32
Last Retrain/Reneg Status.... None
Last Retrain/Reneg Reason.... None
Last Retrain/Reneg Time...... 12 minutes ago
Handshake Time/Retries....... 20 seconds/0
Non-linear Encoding, Rx/Tx... OFF/ON
Precoding, Rx/Tx............. OFF/OFF
Shaping, Rx/Tx............... OFF/ON
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 7
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 4,8
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 4531/1254
Auto Gain Amplitude, db...... 10
Last AGC Gain Value.......... 102
Minimum AGC Gain Value....... 102
Maximum AGC Gain Value....... 102
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...... Internal
Error Correction Status Byte. SYNC UA:T UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/24
Frames Errors, Rx/Tx......... 24/0 (0,1%/0,0%)
Frames Count, Rx/Tx.......... 43382/6036
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 0
Error Control Link NAKs...... 0
Compression Dictionary Size.. V.42bis (512)
Characters Received.......... 4292206
Characters Sent.............. 59947
Average CPS, Rx/Tx........... 5588/78
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 58

[Technical Support]

Просматривая статистики мы обратили внимание, что модем всегда "приходил" к скорости приёма 50667 бит/с и на ней уже оставался до конца сеанса. Посмотрите сами:

Rx Rate (Last/Init/Min/Max).. 50667/54667/50667/54667 bps
Last Retrain/Reneg Time...... 5 minutes ago

Поэтому правильнее всего в данной ситуации не перебирать сервера, а ограничить начальную скорость соединения до 50667 (S120=1.

Попробуйте прописать такую строку инициализации:

M4 S91=15 S210.7=1 S17=48 S120=18

Кстати, M4 удобнее, чем M2 - динамик будет включаться только во время перетренировок и пересогласований скорости. И ещё: процесс выхода на оптимальную скорость проходил бы быстрее и более плавно, если бы Вы пользовались свежей микропрограммой - версии 2.26. Установить её можно с помощью загрузчика FldrWin/VR, который есть на этом сайте в разделе "Микропрограммы".
_________________
Inpro
Technical Support