IDC против Motorolla

[mkon2000]

Прошу помощи. Провайдер балуется с модемами и теперь вместо Courier на моей линии стойка Motoroll. После Courier связь барахло. Может подскажите чего, статистика прилагается.

Inpro IDC Modems Diagnostics, Version 1.0.1.30
16.01.2003 21:48:44 - Outbound Call by RemoteAccess
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.22

Time Online.................. 00:09:22
Termination Reason........... LINK DISCONNECT
Tx Rate (Last/Init/Min/Max).. 31200/31200/31200/31200 bps
Rx Rate (Last/Init/Min/Max).. 31200/31200/31200/31200 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 25
Tx/Power Drop/Rx Level....... 9/0/19
SNR Last/Min/Max............. 43/43/43
Highest Rx/Tx State.......... 67/67
EQM Sum...................... 001F
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. 0/0/2
Last dialed number........... T589938
Flex fail


Symbol Rate.................. 3200
Carrier Frequency Hz, Rx/Tx.. 1829/1920
EQM Value (Last/Min/Max)..... 25/21/39
EQM Hits..................... 0
EQM Last 10 Readings......... 27 27 26 23 28 25 26 24 24 23
Last Retrain/Reneg Status.... Remote Retrain
Last Retrain/Reneg Reason.... Remote Retrain
Last Retrain/Reneg Time...... 1 minutes ago
Handshake Time/Retries....... 16 seconds/0
Non-linear Encoding, Rx/Tx... ON/ON
Precoding, Rx/Tx............. ON/ON
Shaping, Rx/Tx............... ON/ON
Trellis Encoding, Tx......... 16 state
Pre-Emphasis Index, Tx....... 6
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 1,3
Last Rx/Tx State............. 67/67
Energy at 3750Hz/Average .... 302/177
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 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:T UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/8
Frames Errors, Rx/Tx......... 8/6 (0,1%/0,4%)
Frames Count, Rx/Tx.......... 7102/1372
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 2
Error Control Link NAKs...... 6
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 572074
Characters Sent.............. 66679
Average CPS, Rx/Tx........... 1017/118
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 62

[Technical Support]

Хотелось бы подробностей по поводу "связь барахло". По статистике видно, что удалённый модем "зажал" символьную скорость на 3200, что привело к ограничению максимальной скорости до 31200. Была ещё перетренировка по инициативе Motorola - одна за 9.5 минут. Вот и всё плохое...
_________________
Inpro
Technical Support

[mkon2000]

Inpro IDC Modems Diagnostics, Version 1.0.1.30
14.01.2003 18:33:24 - Outbound Call by RemoteAccess
--------------------------------------------------------
Modem type: IDC-5614BXL/VR+ (Plus) Firmware revision: V2.22

Time Online.................. 00:14:08
Termination Reason........... LOCAL REQUEST
Tx Rate (Last/Init/Min/Max).. 31200/28800/28800/31200 bps
Rx Rate (Last/Init/Min/Max).. 33600/33600/33600/33600 bps
Modulation................... V.34bis
Protocol/Compression......... LAP-M/V.42bis
Line Quality................. 39
Tx/Power Drop/Rx Level....... 9/2/22
SNR Last/Min/Max............. 39/39/39
Highest Rx/Tx State.......... 84/87
EQM Sum...................... 001B
RBS Pattern.................. NA
Rate Drop.................... NA
Digital Loss................. None
Retrains Issued/Granted/Auto. 0/0/0
Renegs Issued/Granted........ 0/1
FForwards/FBacks/Denied...... 0/0/0
Forced FB/FB after FF/MaxREJ. 0/0/1
Last dialed number........... T88550104
Flex fail


Symbol Rate.................. 3429
Carrier Frequency Hz, Rx/Tx.. 1959/1959
EQM Value (Last/Min/Max)..... 39/22/43
EQM Hits..................... 0
EQM Last 10 Readings......... 41 34 40 37 41 39 41 38 35 37
Last Retrain/Reneg Status.... Remote Rate Renegotiation
Last Retrain/Reneg Reason.... Remote Rate Renegotiation
Last Retrain/Reneg Time...... 14 minutes ago
Handshake Time/Retries....... 21 seconds/0
Non-linear Encoding, Rx/Tx... ON/ON
Precoding, Rx/Tx............. ON/ON
Shaping, Rx/Tx............... ON/OFF
Trellis Encoding, Tx......... 64 state
Pre-Emphasis Index, Tx....... 7
Band Edges Lower/Upper, Hz... 150/3825
Round trip delay, ms......... 2,3
Last Rx/Tx State............. 67/87
Energy at 3750Hz/Average .... 472/1249
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:R ODP:T
Error Correction Status Byte. SYNC UA:R SAMBE:T XID:T XID:R
Frames REJected, Last/Total.. 1/2
Frames Errors, Rx/Tx......... 2/1 (0,0%/0,0%)
Frames Count, Rx/Tx.......... 7839/3499
Error Control Frame Size..... V.42 LAPM (128)
Error Control Timeouts....... 9
Error Control Link NAKs...... 1
Compression Dictionary Size.. V.42bis (2048)
Characters Received.......... 752215
Characters Sent.............. 257349
Average CPS, Rx/Tx........... 887/303
Characters Lost, Rx/Tx....... 0/0
Estimated Noise Level, -dBm.. 61


И субъективно при Courier качало быстрее. С Motorolla сперва чего то думает, и только потом начинает качать. Информация к размышлению: если я меняю IDC на Courier (русский SDL), то с Courier идет не хуже IDC, а с Motorolla постоянно отваливается, плохо коннектится и идут ошибки CRC

[Technical Support]

И что мы видим: символьная 3429 и соответственно, скорость приёма - 33600. Это быстрее примерно на 7.5%.

[mkon2000]

Спасибо, буду мучать провайдера.