Что случилось с модемом, помогите!

[Роман]

Раньше мой модем работал на 19200-21600. Потом, не знаю из-за чего он стал работать 14400-16800. И вдруг вчера соединяюсь 28800. Думаю случайность, но просидел минут 50, всё нормально.
Потом перезвонил снова 28800. И еще, и еще и опять 28800, даже разок 31200.
Сейчас же захотел в инете посидеть, 14400. Перезваниваю снова 14400 - 16800, что случилось не знаю, помогите.
И ещё один факт модем сегодня устанавливает соединение раза с пятого (обычно с первого): при соединение мой модем издает звук высокого тона и спустя несколько секунд (20-30) удаленный модем разеденяет связь.
Вот статистика вчерашнего первого соединения на 28800, ниже статистика сегоднешнего дня(16800):
(извиняюсь за размер сообщения )

Inpro IDC Modems Diagnostics, Version 1.0.1.30
20.07.03 21:07:07 - Direct Log Write Entry
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.22

Time Online.................. 00:48:45
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 24000/24000/21600/26400 bps
Rx Rate (Last/Init/Min/Max).. 26400/28800/16800/31200 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 39
Tx/Power Drop/Rx Level....... 15/0/34
SNR Last/Min/Max............. 43/37/43
Highest Rx/Tx State.......... 65/87
EQM Sum...................... 0089
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 2/3/0
Renegs Issued/Granted........ 28/2
FForwards/FBacks/Denied...... 12/18/0
Forced FB/FB after FF/MaxREJ. 15/8/11
Last dialed number........... P9W681111
Flex fail 9481834246E0


Symbol Rate.................. 3200
Carrier Frequency Hz, Rx/Tx.. 1829/1920
EQM Value (Last/Min/Max)..... 39/1/127
EQM Hits..................... 0
EQM Last 10 Readings......... 45 32 37 35 35 33 39 60 39 34
Last Retrain/Reneg Status.... Remote Retrain
Last Retrain/Reneg Reason.... Remote Retrain
Reason for V.34 Fallback..... Data Pump decision to Fallback in Phase 2
Last Retrain/Reneg Time...... 0 minutes ago
Handshake Time/Retries....... 20 seconds/0
Non-linear Encoding, Rx/Tx... ON/OFF
Precoding, Rx/Tx............. ON/OFF
Shaping, Rx/Tx............... ON/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............. 65/67
Energy at 3750Hz/Average .... 54/381
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....... 02
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.. 1/91
Frames Errors, Rx/Tx......... 859/163 (1,8%/0,6%)
Frames Count, Rx/Tx.......... 47059/26473
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 38
Error Control Link NAKs...... 163
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 5943519
Characters Sent.............. 913149
Average CPS, Rx/Tx........... 2031/312
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 77



Inpro IDC Modems Diagnostics, Version 1.0.1.31
21.07.03 14:10:06 - Outbound Call by Remote Access
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.22

Time Online.................. 00:00:20
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 19200/12000/12000/19200 bps
Rx Rate (Last/Init/Min/Max).. 16800/16800/16800/16800 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 22
Tx/Power Drop/Rx Level....... 15/0/36
SNR Last/Min/Max............. NA/NA/NA
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 0000
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/1/0
Renegs Issued/Granted........ 0/0
FForwards/FBacks/Denied...... 0/0/0
Forced FB/FB after FF/MaxREJ. 0/0/0
Last dialed number........... P9W681111
Flex fail


Symbol Rate.................. 2400
Carrier Frequency Hz, Rx/Tx.. 1600/1800
EQM Value (Last/Min/Max)..... 22/20/93
EQM Hits..................... 0
EQM Last 10 Readings......... 23 20 21 82 25 93 29 0 255 255
Last Retrain/Reneg Status.... Remote Retrain
Last Retrain/Reneg Reason.... Remote Retrain
Reason for V.34 Fallback..... Data Pump decision to Fallback in Phase 2
Last Retrain/Reneg Time...... 0 minutes ago
Handshake Time/Retries....... 21 seconds/0
Non-linear Encoding, Rx/Tx... ON/OFF
Precoding, Rx/Tx............. OFF/OFF
Shaping, Rx/Tx............... ON/OFF
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 0
Band Edges Lower/Upper, Hz... 338/3825
Round trip delay, ms......... 3,9
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 46/89
Last AGC Gain Value.......... 47
Minimum AGC Gain Value....... 44
Maximum AGC Gain Value....... 47
Detection of 120 Hz Tones.... Yes
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:R ODP:T
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/0
Frames Errors, Rx/Tx......... 0/0 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 25/30
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.......... 337
Characters Sent.............. 1678
Average CPS, Rx/Tx........... 16/83
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 100

[Technical Support]

Скорее всего, что-то случилось не с модемом, а с АТС. Убедиться в этом можно только одним способом: проверить модем на заведомо хорошей линии (или в сервисном центре).
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Inpro
Technical Support