IDC5614 BXL/VRСтандартный вопрос:как улучшить качество связи

[Zergling]

Уважаемый тех. суппорт !
Вы не могли бы подсказать, как улучшить качество соединения.


Статистика
[14:23:30] Disconnected from Corona

Time Online.................. 00:45:38
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 7200/14400/ 4800/14400 bps
Rx Rate (Last/Init/Min/Max).. 4800/33600/ 4800/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 127
Tx/Power Drop/Rx Level....... 15/0/19
SNR Last/Min/Max............. 37/34/41
Highest Rx/Tx State.......... 84/87
EQM Sum...................... 003D
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 2/6/8
Renegs Issued/Granted........ 9/62
FForwards/FBacks/FEQM/Denied. 2/9/0/0
Forced FB/FB after FF/MaxREJ. 0/0/4
Last dialed number........... P720014
Flex fail

Rockwell Diagnostics/W32, version 1.3.0.0, compiled at Jun 13 2002 22:35:06
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru, 2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Connection time : 00:45:38
Handshake Time/Retries : 17 sec/0
TX Rate (Last/Init/Min/Max) : 7200/14400/4800/14400
RX Rate (Last/Init/Min/Max) : 4800/33600/4800/33600
Modulation/Protocol/Compression : V.34/LAPM/V.42bis
TX Symbol rate : 3429
TX/RX carrier frequency, Hz : 1959/1959
Signal Level (TX/Power Drop), -dB : 15/0
RX Signal Level (Last/Min/Max), -dB : 18/48/17
Band Edge Lower/Upper, Hz : 150/3825
Round trip delay, ms : 3.458
EQM Value (Last/Min/Max/Negative) : 127/0/127/0
EQM Samples Running Sum : 003D
EQM Last 10 Readings : 127 127 127 127 127 127 127 0 0 0
SNR Ratio (Last/Min/Max), dB : 37/34/41
TX/RX Non-linear Encoding : ON/OFF
TX/RX Precoding : ON/ON
TX/RX Constellation Shaping : OFF/ON
TX Trellis Encoding : 64 state
TX Pre-emphasis : 6
TX/RX state (Max TX/RX, Last TX/RX) : 87H/84H, 87H/67H
Error Correction Status : ODP:T ADP:R SABME:T UA:R XID:T,R SYNC
Energy at 3750Hz/Average Energy : 418/275
Retrains (Issued/Granted/Fast) : 2/6/0
Renegs (Issued/Granted) : 9/62
Retrans per frame/Frames rejected : 1/175
Total number of REJ sent/received : 175/12
Last Retrain/Reneg reason : Remote initiated a reneg
Last Retrain/Reneg requested : Remote Rate Renegotiation
Minutes Since Last Retrain/Reneg : 0
Disconnect reason : LOCAL REQUEST
Remote supports symbol rate (1,2,5) : 2743:ON 2800:OFF 3429:ON 3429-TX:ON
Remote supports symbol rate (3,4) : 3000-L:ON 3000-H:ON 3200-L:ON 3200-H:ON
Remote power drop support : ON
Remote max symbol rate difference : 0 steps
Remote is a CME modem : No
Remote supports V.34bis : Yes
Remote frequency source : Internal
CRe/CRd/CL/MS/ACK/NAK received : No/No/No/No/No/No
V.8bis success/V.8bis neg started : No/Yes


Unimodem Diagnostics/W32, version 1.1.0.1, compiled at Nov 20 2002 22:29:58
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru, 2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Diag Command Specification rev.: 1.0
Call Setup Result code : Data Answering signal detected
Multi-media mode : Data Only
DTE-DCE interface mode : Async data
TX/RX signal power level, -dBm : 15/19
Estimated noise level, -dBm : 56
TX/RX Negotiation : V.34/V.34
TX/RX Symbol Rate : 3429/3429
TX/RX Carrier frequency, Hz : 1959/1959
TX data rate (Last/Init) : 7200/14400
RX data rate (Last/Init) : 4800/33600
Temporary carrier loss count : 0
Carrier Rate Re-neg count : 71
Retrains Requested/Granted : 2/6
Protocol/Compression : V.42 LAPM/V.42bis
Error control frame size, bytes: 128
Error control timeouts in TX : 193
Error control NAKs received : 12
Compression dict. size, bytes : 2048
TX/RX flow control : V.24 ckt 106/133 / V.24 ckt 106/133
TX/RX chars sent : 213061/1004111
TX/RX chars lost (data overrun): 0/0
TX/RX I-Frame count : 4453/10512
TX/RX I-Frame error count : 12/175
Termination Cause : cct108 turned Off

еще один сеанс
[14:43:03] Disconnected from Corona

Time Online.................. 00:18:17
Termination Reason........... NO REMOTE RESPONSE
Tx Rate (Last/Init/Min/Max).. 14400/14400/ 9600/14400 bps
Rx Rate (Last/Init/Min/Max).. 33600/31200/31200/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 38
Tx/Power Drop/Rx Level....... 15/0/51
SNR Last/Min/Max............. 36/36/37
Highest Rx/Tx State.......... 84/87
EQM Sum...................... 0031
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/4/4
Renegs Issued/Granted........ 1/239
FForwards/FBacks/FEQM/Denied. 0/1/0/0
Forced FB/FB after FF/MaxREJ. 0/0/4
Last dialed number........... P720014
Flex fail

Rockwell Diagnostics/W32, version 1.3.0.0, compiled at Jun 13 2002 22:35:06
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru, 2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Connection time : 00:18:17
Handshake Time/Retries : 17 sec/0
TX Rate (Last/Init/Min/Max) : 14400/14400/9600/14400
RX Rate (Last/Init/Min/Max) : 33600/31200/31200/33600
Modulation/Protocol/Compression : V.34/LAPM/V.42bis
TX Symbol rate : 3429
TX/RX carrier frequency, Hz : 1959/1959
Signal Level (TX/Power Drop), -dB : 15/0
RX Signal Level (Last/Min/Max), -dB : 50/50/22
Band Edge Lower/Upper, Hz : 150/3825
Round trip delay, ms : 3.166
EQM Value (Last/Min/Max/Negative) : 38/21/127/0
EQM Samples Running Sum : 0031
EQM Last 10 Readings : 43 45 43 100 49 40 40 38 45 40
SNR Ratio (Last/Min/Max), dB : 36/36/37
TX/RX Non-linear Encoding : ON/ON
TX/RX Precoding : ON/ON
TX/RX Constellation Shaping : ON/ON
TX Trellis Encoding : 64 state
TX Pre-emphasis : 6
TX/RX state (Max TX/RX, Last TX/RX) : 87H/84H, 21H/20H
Error Correction Status : ODP:T ADP:R SABME:T UA:R XID:T,R SYNC
Energy at 3750Hz/Average Energy : 380/274
Retrains (Issued/Granted/Fast) : 0/4/0
Renegs (Issued/Granted) : 1/239
Retrans per frame/Frames rejected : 0/135
Total number of REJ sent/received : 135/8
Last Retrain/Reneg reason : Remote initiated a reneg
Last Retrain/Reneg requested : Remote Rate Renegotiation
Minutes Since Last Retrain/Reneg : 0
Disconnect reason : NO REMOTE RESPONSE
Remote supports symbol rate (1,2,5) : 2743:ON 2800:OFF 3429:ON 3429-TX:ON
Remote supports symbol rate (3,4) : 3000-L:ON 3000-H:ON 3200-L:ON 3200-H:ON
Remote power drop support : ON
Remote max symbol rate difference : 0 steps
Remote is a CME modem : No
Remote supports V.34bis : Yes
Remote frequency source : Internal
CRe/CRd/CL/MS/ACK/NAK received : No/No/No/No/No/No
V.8bis success/V.8bis neg started : No/Yes
Workaround used : V90Phase2Escape
Workaround used : RateRenegFailure


Unimodem Diagnostics/W32, version 1.1.0.1, compiled at Nov 20 2002 22:29:58
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru, 2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Diag Command Specification rev.: 1.0
Call Setup Result code : Data Answering signal detected
Multi-media mode : Data Only
DTE-DCE interface mode : Async data
TX/RX signal power level, -dBm : 15/47
Estimated noise level, -dBm : 87
TX/RX Negotiation : V.34/V.34
TX/RX Symbol Rate : 3429/3429
TX/RX Carrier frequency, Hz : 1959/1959
TX data rate (Last/Init) : 14400/14400
RX data rate (Last/Init) : 33600/31200
Temporary carrier loss count : 0
Carrier Rate Re-neg count : 240
Retrains Requested/Granted : 0/4
Protocol/Compression : V.42 LAPM/V.42bis
Error control frame size, bytes: 128
Error control timeouts in TX : 143
Error control NAKs received : 8
Compression dict. size, bytes : 2048
TX/RX flow control : V.24 ckt 106/133 / V.24 ckt 106/133
TX/RX chars sent : 158426/1145667
TX/RX chars lost (data overrun): 0/0
TX/RX I-Frame count : 4021/11708
TX/RX I-Frame error count : 8/135
Termination Cause : cct108 turned Off

Заранее спасибо!

[Technical Support]

А что у Вас было прописано в строке инициализации при снятии этих статистик?
_________________
Inpro
Technical Support

[Zergling]

Возможно ошибочно.
S91=15 S210.7=1 S202.3=1 +MS=11,,,,,,14400

[Technical Support]

Ограничение скорости передачи, несомненно, было ошибкой. С другой стороны линии находится, скорее всего, один из тех модемов US Robotics, которые не понимают и поэтому не любят таких ограничений. Поглядите сами:

Time Online.................. 00:18:17
Renegs Issued/Granted........ 1/239

Почти наверняка подавляющее большинство этих пересогласований - попытки удалённого модема поднять скорость (т.е. сделать fall-forward). Попытки безуспешные, поскольку Вы эту скорость ограничили до 14400 бит/с, но ведь удалённый модем не способен такую ситуацию распознать! Вот и бьётся он, как муха об стекло, и сам не работает, и Вашему модему работать не даёт...

Поэтому прежде всего надо убрать ограничение скорости передачи и посмотреть, как это изменит ситуацию.

Строка инициализации:

S91=12 S210.7=1 S202.3=1 +MS=11

Покажите статистику с этой строкой.
_________________
Inpro
Technical Support

[Zergling]

Поставил указанные Вами параметры:

21:30:04] Disconnected from Corona

Time Online.................. 00:41:04
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 28800/28800/28800/31200 bps
Rx Rate (Last/Init/Min/Max).. 33600/33600/31200/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 127
Tx/Power Drop/Rx Level....... 12/0/33
SNR Last/Min/Max............. 36/34/41
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 0033
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/9/8
Renegs Issued/Granted........ 1/10
FForwards/FBacks/FEQM/Denied. 1/0/0/0
Forced FB/FB after FF/MaxREJ. 0/0/6
Last dialed number........... P720014
Flex fail

Rockwell Diagnostics/W32, version 1.3.0.0, compiled at Jun 13 2002 22:35:06
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru, 2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Connection time : 00:41:04
Handshake Time/Retries : 16 sec/0
TX Rate (Last/Init/Min/Max) : 28800/28800/28800/31200
RX Rate (Last/Init/Min/Max) : 33600/33600/31200/33600
Modulation/Protocol/Compression : V.34/LAPM/V.42bis
TX Symbol rate : 3429
TX/RX carrier frequency, Hz : 1959/1959
Signal Level (TX/Power Drop), -dB : 12/0
RX Signal Level (Last/Min/Max), -dB : 32/45/21
Band Edge Lower/Upper, Hz : 150/3825
Round trip delay, ms : 3.458
EQM Value (Last/Min/Max/Negative) : 127/22/127/0
EQM Samples Running Sum : 0033
EQM Last 10 Readings : 127 125 125 51 47 48 46 41 41 45
SNR Ratio (Last/Min/Max), dB : 36/34/41
TX/RX Non-linear Encoding : ON/ON
TX/RX Precoding : OFF/ON
TX/RX Constellation Shaping : OFF/ON
TX Trellis Encoding : 64 state
TX Pre-emphasis : 6
TX/RX state (Max TX/RX, Last TX/RX) : 67H/67H, 67H/67H
Error Correction Status : ODP:T ADP:R SABME:T UA:R XID:T,R SYNC
Energy at 3750Hz/Average Energy : 382/276
Retrains (Issued/Granted/Fast) : 0/9/0
Renegs (Issued/Granted) : 1/10
Retrans per frame/Frames rejected : 1/62
Total number of REJ sent/received : 62/1
Last Retrain/Reneg reason : Remote initiated a retrain
Last Retrain/Reneg requested : Remote Retrain
Minutes Since Last Retrain/Reneg : 1
Disconnect reason : LOCAL REQUEST
Remote supports symbol rate (1,2,5) : 2743:ON 2800:OFF 3429:ON 3429-TX:ON
Remote supports symbol rate (3,4) : 3000-L:ON 3000-H:ON 3200-L:ON 3200-H:ON
Remote power drop support : ON
Remote max symbol rate difference : 0 steps
Remote is a CME modem : No
Remote supports V.34bis : Yes
Remote frequency source : Internal
CRe/CRd/CL/MS/ACK/NAK received : No/No/No/No/No/No
V.8bis success/V.8bis neg started : No/Yes


Unimodem Diagnostics/W32, version 1.1.0.1, compiled at Nov 20 2002 22:29:58
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru, 2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Diag Command Specification rev.: 1.0
Call Setup Result code : Data Answering signal detected
Multi-media mode : Data Only
DTE-DCE interface mode : Async data
TX/RX signal power level, -dBm : 12/33
Estimated noise level, -dBm : 69
TX/RX Negotiation : V.34/V.34
TX/RX Symbol Rate : 3429/3429
TX/RX Carrier frequency, Hz : 1959/1959
TX data rate (Last/Init) : 28800/28800
RX data rate (Last/Init) : 33600/33600
Temporary carrier loss count : 0
Carrier Rate Re-neg count : 11
Retrains Requested/Granted : 0/9
Protocol/Compression : V.42 LAPM/V.42bis
Error control frame size, bytes: 128
Error control timeouts in TX : 18
Error control NAKs received : 1
Compression dict. size, bytes : 2048
TX/RX flow control : V.24 ckt 106/133 / V.24 ckt 106/133
TX/RX chars sent : 119933/1011411
TX/RX chars lost (data overrun): 0/0
TX/RX I-Frame count : 2887/9729
TX/RX I-Frame error count : 1/62
Termination Cause : cct108 turned Off

[Technical Support]

Вот так и оставьте. Лучшее враг хорошего Пока на другом конце линии стоят эти модемы, бОльшего Вам не добиться.
_________________
Inpro
Technical Support