LoadHawg
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 Posted:
Fri Jan 14, 2005 8:03 am Post subject:
Understanding and Comparing my Modems Diags... (long) |
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From my other thread I've been experiencing a problem where after
connecting at a respectable 45.5k or so under Win2K w/ Zoom 3048C
(Conexant ACF) external RS232 the connection 'goes south...'
A) The "Errors:" in the MS DUN window start going up w/ LOTS of data
throughput (light duty is OK)
B) In conjunction w/ this, speeds appear to decrease w/ increasingly
longer periods of 'dead' time w/ no activity to the point that no data
goes whatsoever though it remains connected.
Below are two complete dumps of data (including Diags) from the modem
using the AT&V, AT&V1, AT&V2, AT#UD commands and Stanislov's diag
software to further understand the data.
The FIRST (good) is from a brief, 'good' connection before the errors
piled on and lack of throughput started.
The SECOND (bad) is from an extended session including a long break I
took in which the system encountered lots of errors and finally got to
the point NOTHING could be done online down to simply sending an email
- while connected, the connection had 'died'. The modem 'lights' would
only flash briefly once in a while...
What's interesting is it appears to be maintaining the same speed
despite the errors and lack of data... - 3 lines stood out in the
second 'bad' session w/ respect to the 'good' session:
A) TOtal number of REJ sent/received: 29/7
B) Error control NAKS received : 80
C) TX/RX I-Frame error count : 1792/29
These three seem quite a bit higher than the first 'good' session.
Other than those three lines things seem pretty comparable between
them.
I'm not expert at reading/understanding these but can only compare the
two sessions to look for possible clues. If anybody would compare to
look over these or compare them side by side or something and see if
they can infer any possible culprits or explain to me why the
connection always reports 'errors' and stops passing data - much
appreciated.
As a reminder this has been duplicated across 2 different PCs,
different serial/phone cables, 2 different ISPs. I also encountered
this problem on my old trusty Supra 288/336 backup modem though these
reports below are from my Zoom 3048C V92 which I'm concentrating on
working with here. The entire house wiring has been bypassed at the
demarcation telco box. THe POTS phone line itself is of course the
same. There is a subtle hum on the line but I believe that hum has
been there before this problem became aparent.
============================================================================
short, session w/o errors and good data transfers:
ACTIVE PROFILE:
B0 E0 L1 M1 N0 Q0 T V1 W2 X4 Y0 &C1 &D2 &G0 &J0 &K3 &Q5 &R1 &S0 &T5
&X0 &Y0
S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002 S07:060
S08:002 S09:006
S10:014 S11:085 S12:050 S18:000 S25:005 S26:001 S36:007 S38:020
S46:138 S48:007
S95:044
STORED PROFILE 0:
B1 E1 L1 M1 N0 Q0 T V1 W0 X4 Y0 &C1 &D2 &G0 &J0 &K3 &Q5 &R1 &S0 &T5
&X0
S00:000 S02:043 S06:002 S07:050 S08:002 S09:006 S10:014 S11:085
S12:050 S18:000
S36:007 S40:104 S41:195 S46:138 S95:000
STORED PROFILE 1:
B0 E0 L1 M2 N0 P Q1 V1 W2 X1 Y0 &C0 &D0 &G0 &J0 &K7 &Q3 &R0 &S0 &T5
&X0
S00:002 S02:050 S06:002 S07:006 S08:014 S09:085 S10:050 S11:146
S12:000 S18:000
S36:195 S40:000 S41:000 S46:050 S95:001
TELEPHONE NUMBERS:
0= 1=
2=
TERMINATION REASON.......... NO REMOTE RESPONSE
LAST TX rate................ 31200 BPS
HIGHEST TX rate............. 31200 BPS
LAST RX rate................ 44000 BPS
HIGHEST RX rate............. 45333 BPS
PROTOCOL.................... LAPM
COMPRESSION................. V42Bis
Line QUALITY................ 127
Rx LEVEL.................... 012
Highest Rx State............ 67
Highest TX State............ 87
EQM Sum..................... 00D1
RBS Pattern................. 20
Rate Drop................... FF
Digital Loss................ None
Local Rtrn Count............ 00
Remote Rtrn Count........... 00
V90
BEGINaa15ab15ac15ad15ba42bb42bc43bd43ca77cb67cc238da4ea1eb0fa109fb109fc109ga5gb0
ha127hb19hc76hd0he14hf209hg0hh0hi0hj113hk47hl49hm47hn48ho50hp53hq63hr27hs29ia25i
b25ic25ja0jb0jc2jd0je1jf3ka0kb0kc0kd0ke16kf0kg0kh10ki38kj0kk0kl61km33kn103la135l
b103lc32ld33ma0mb11mc10na2nb16oa4ob32oc0od2oe55of0og86pa1pb0pc0pd0qa15qb4qc5ra0r
b255rc255rd255re255rf255rg255rh129ri224rj193rk101rl19rm148rn42ro141rp71rq101rr14
1rs224rt193ru101rv19rw148rx42ry141rz71sa3sb255sc32sd0ta21tb98tc0td218te0tf144tg2
55th4ti3ua8va0vb0wa0wb0wc0END
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
000000000000000000000000
Rockwell Diagnostics/W32, version 1.3.0.0, compiled at Jun 13 2002
22:35:24
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru,
2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Connection time : 00:11:10
Handshake Time/Retries : 21 sec/98
TX Rate (Last/Init/Min/Max) : 31200/31200/31200/31200
RX Rate (Last/Init/Min/Max) : 44000/45333/44000/45333
Modulation/Protocol/Compression : V.90/LAPM/V.42bis
TX Symbol rate : 3200
Signal Level (TX/Power Drop), -dB : 5/0
RX Signal Level (Last/Min/Max), -dB : 11/11/11
Band Edge Lower/Upper, Hz : 150/3825
Round trip delay, ms : 17.563
EQM Value (Last/Min/Max/Negative) : 127/19/76/0
EQM Samples Running Sum : 00D1
EQM Last 10 Readings : 113 47 49 47 48 50 53 63 27 29
SNR Ratio (Last/Min/Max), dB : 43/43/43
TX Non-linear Encoding : OFF
TX Precoding : OFF
TX/RX Constellation Shaping : ON/OFF
TX Trellis Encoding : 16 state
TX Pre-emphasis : 10
TX/RX state (Max TX/RX, Last TX/RX) : 87H/67H, 21H/20H
Error Correction Status : SABME:T UA:R XID:T,R SYNC
Dual PCM/120 Hz detection : No/No
Energy at 3750Hz/Average Energy : 567/86
RBS Pattern/Alternating RBS Pattern : 20/00
V.90 Digital Pad/A-law/HighPowerSrv : 0dB/No/No
Retrains (Issued/Granted/Fast) : 0/0/1
Renegs (Issued/Granted) : 2/0
Retrans per frame/Frames rejected : 1/0
Total number of REJ sent/received : 0/0
Last Retrain/Reneg reason : Fall-back due to high EQM
Last Retrain/Reneg requested : Local Rate Renegotiation
Minutes Since Last Retrain/Reneg : 4
Fallback to V34 reason : Data Pump decision to FB, EQM
also bad
Disconnect reason : NO REMOTE RESPONSE
Remote supports symbol rate (1,2,5) : 2743:ON 2800:ON 3429:ON
3429-TX:OFF
Remote supports symbol rate (3,4) : 3000-L:OFF 3000-H:OFF 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
Remote is ITU/K56Flex neg/High IMD : No/No/No
V.8 bis CRe detected/early : No/No
CRe/CRd/CL/MS/ACK/NAK received : Yes/No/No/No/No/No
V.8bis success/V.8bis neg started : No/Yes
Quick Connect Info0 : QC attempts failed and fall back
to V8
V92 debug information : Retrain/reneg/fast retrain
successful
Call waiting count during connetion : 0
Last MOH Condition State : Idle wait for MOH action
Last MOH Datapump State TX : Sending A/B "Retrain State"
Last MOH Datapump State RX : Unknown
PCM Upstream RBS2 Detection : Unknown
PCM Phase4 Upstream Const./RR : 4-point/4-point
PCM Upstream Pad Detection : 0dB
Workaround used : V90Phase2Escape
Workaround used : RateRenegFailure
DIAG <2A4D3263 0=7F>
DIAG <2A4D3263 1=07>
DIAG <2A4D3263 2=07>
DIAG <2A4D3263 3=00>
DIAG <2A4D3263 10=0C>
DIAG <2A4D3263 11=05>
DIAG <2A4D3263 12=19>
DIAG <2A4D3263 20=0C>
DIAG <2A4D3263 21=0E>
DIAG <2A4D3263 22=0C80>
DIAG <2A4D3263 23=1F40>
DIAG <2A4D3263 24=0780>
DIAG <2A4D3263 25=00>
DIAG <2A4D3263 26=79E0>
DIAG <2A4D3263 27=B115>
DIAG <2A4D3263 30=00>
DIAG <2A4D3263 31=02>
DIAG <2A4D3263 32=00>
DIAG <2A4D3263 33=00>
DIAG <2A4D3263 34=79E0>
DIAG <2A4D3263 35=ABE0>
DIAG <2A4D3263 40=01>
DIAG <2A4D3263 41=80>
DIAG <2A4D3263 42=00>
DIAG <2A4D3263 43=02>
DIAG <2A4D3263 44=01>
DIAG <2A4D3263 50=02>
DIAG <2A4D3263 51=02>
DIAG <2A4D3263 52=0077DA00>
DIAG <2A4D3263 53=02CA7900>
DIAG <2A4D3263 54=0000>
DIAG <2A4D3263 55=0000>
DIAG <2A4D3263 56=0001E500>
DIAG <2A4D3263 57=00064D00>
DIAG <2A4D3263 58=0000>
DIAG <2A4D3263 59=0000>
DIAG <2A4D3263 60=00>
Unimodem Diagnostics/W32, version 1.1.0.1, compiled at Nov 20 2002
22:29:14
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru,
2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Diag Command Specification rev.: 7.f
Call Setup Result code : Data Answering signal detected
Multi-media mode : DSVD, 1.2
DTE-DCE interface mode : Async data
TX/RX signal power level, -dBm : 5/12
Estimated noise level, -dBm : 25
TX/RX Negotiation : V.34/V.90 Issue 1 (asymmetric)
TX/RX Symbol Rate : 3200/8000
TX/RX Carrier frequency, Hz : 1920/0
TX data rate (Last/Init) : 31200/31200
RX data rate (Last/Init) : 44000/45333
Temporary carrier loss count : 0
Carrier Rate Re-neg count : 2
Retrains Requested/Granted : 0/0
Protocol/Compression : V.42 LAPM/V.42bis
Error control frame size, bytes: 128
Error control timeouts in TX : 0
Error control NAKs received : 2
TX/RX flow control : V.24 ckt 106/133 / V.24 ckt 106/133
TX/RX chars sent : 7854592/46823680
TX/RX chars lost (data overrun): 0/0
TX/RX I-Frame count : 124160/412928
TX/RX I-Frame error count : 0/0
Termination Cause : Cause Unidentified
===========================================================================
195 Errors, extended session - speed died to zero throughput, had to
disconnect and redial...
ACTIVE PROFILE:
B0 E0 L1 M1 N0 Q0 T V1 W2 X4 Y0 &C1 &D2 &G0 &J0 &K3 &Q5 &R1 &S0 &T5
&X0 &Y0
S00:000 S01:000 S02:043 S03:013 S04:010 S05:008 S06:002 S07:060
S08:002 S09:006
S10:014 S11:085 S12:050 S18:000 S25:005 S26:001 S36:007 S38:020
S46:138 S48:007
S95:044
STORED PROFILE 0:
B1 E1 L1 M1 N0 Q0 T V1 W0 X4 Y0 &C1 &D2 &G0 &J0 &K3 &Q5 &R1 &S0 &T5
&X0
S00:000 S02:043 S06:002 S07:050 S08:002 S09:006 S10:014 S11:085
S12:050 S18:000
S36:007 S40:104 S41:195 S46:138 S95:000
STORED PROFILE 1:
B0 E0 L1 M2 N0 P Q1 V1 W2 X1 Y0 &C0 &D0 &G0 &J0 &K7 &Q3 &R0 &S0 &T5
&X0
S00:002 S02:050 S06:002 S07:006 S08:014 S09:085 S10:050 S11:146
S12:000 S18:000
S36:195 S40:000 S41:000 S46:050 S95:001
TELEPHONE NUMBERS:
0= 1=
2=
TERMINATION REASON.......... NO REMOTE RESPONSE
LAST TX rate................ 31200 BPS
HIGHEST TX rate............. 31200 BPS
LAST RX rate................ 44000 BPS
HIGHEST RX rate............. 45333 BPS
PROTOCOL.................... LAPM
COMPRESSION................. V42Bis
Line QUALITY................ 127
Rx LEVEL.................... 012
Highest Rx State............ 67
Highest TX State............ 87
EQM Sum..................... 00D2
RBS Pattern................. 01
Rate Drop................... FF
Digital Loss................ None
Local Rtrn Count............ 00
Remote Rtrn Count........... 00
V90
Rockwell Diagnostics/W32, version 1.3.0.0, compiled at Jun 13 2002
22:35:24
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru,
2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Connection time : 04:25:21
Handshake Time/Retries : 21 sec/88
TX Rate (Last/Init/Min/Max) : 31200/31200/31200/31200
RX Rate (Last/Init/Min/Max) : 44000/45333/44000/45333
Modulation/Protocol/Compression : V.90/LAPM/V.42bis
TX Symbol rate : 3200
Signal Level (TX/Power Drop), -dB : 5/0
RX Signal Level (Last/Min/Max), -dB : 11/11/11
Band Edge Lower/Upper, Hz : 150/3825
Round trip delay, ms : 19.125
EQM Value (Last/Min/Max/Negative) : 127/16/76/0
EQM Samples Running Sum : 00D2
EQM Last 10 Readings : 127 51 51 50 52 53 58 32 30 32
SNR Ratio (Last/Min/Max), dB : 44/44/44
TX Non-linear Encoding : OFF
TX Precoding : OFF
TX/RX Constellation Shaping : ON/OFF
TX Trellis Encoding : 16 state
TX Pre-emphasis : 10
TX/RX state (Max TX/RX, Last TX/RX) : 87H/67H, 21H/20H
Error Correction Status : SABME:T UA:R XID:T,R SYNC
Dual PCM/120 Hz detection : No/No
Energy at 3750Hz/Average Energy : 565/86
RBS Pattern/Alternating RBS Pattern : 01/00
V.90 Digital Pad/A-law/HighPowerSrv : 0dB/No/No
Retrains (Issued/Granted/Fast) : 0/0/1
Renegs (Issued/Granted) : 2/0
Retrans per frame/Frames rejected : 1/29
Total number of REJ sent/received : 29/7
Last Retrain/Reneg reason : Fall-back due to high EQM
Last Retrain/Reneg requested : Local Rate Renegotiation
Minutes Since Last Retrain/Reneg : 246
Fallback to V34 reason : Data Pump decision to FB, EQM
also bad
Disconnect reason : NO REMOTE RESPONSE
Remote supports symbol rate (1,2,5) : 2743:ON 2800:ON 3429:ON
3429-TX:OFF
Remote supports symbol rate (3,4) : 3000-L:OFF 3000-H:OFF 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
Remote is ITU/K56Flex neg/High IMD : No/No/No
V.8 bis CRe detected/early : No/No
CRe/CRd/CL/MS/ACK/NAK received : Yes/No/No/No/No/No
V.8bis success/V.8bis neg started : No/Yes
Quick Connect Info0 : QC attempts failed and fall back
to V8
V92 debug information : Retrain/reneg/fast retrain
successful
Call waiting count during connetion : 0
Last MOH Condition State : Idle wait for MOH action
Last MOH Datapump State TX : Sending A/B "Retrain State"
Last MOH Datapump State RX : Unknown
PCM Upstream RBS2 Detection : Unknown
PCM Phase4 Upstream Const./RR : 4-point/4-point
PCM Upstream Pad Detection : 0dB
Workaround used : V90Phase2Escape
Workaround used : RateRenegFailure
DIAG <2A4D3263 0=7F>
DIAG <2A4D3263 1=07>
DIAG <2A4D3263 2=07>
DIAG <2A4D3263 3=00>
DIAG <2A4D3263 10=0C>
DIAG <2A4D3263 11=05>
DIAG <2A4D3263 12=1A>
DIAG <2A4D3263 20=0C>
DIAG <2A4D3263 21=0E>
DIAG <2A4D3263 22=0C80>
DIAG <2A4D3263 23=1F40>
DIAG <2A4D3263 24=0780>
DIAG <2A4D3263 25=00>
DIAG <2A4D3263 26=79E0>
DIAG <2A4D3263 27=B115>
DIAG <2A4D3263 30=00>
DIAG <2A4D3263 31=02>
DIAG <2A4D3263 32=00>
DIAG <2A4D3263 33=00>
DIAG <2A4D3263 34=79E0>
DIAG <2A4D3263 35=ABE0>
DIAG <2A4D3263 40=01>
DIAG <2A4D3263 41=80>
DIAG <2A4D3263 42=00>
DIAG <2A4D3263 43=50>
DIAG <2A4D3263 44=01>
DIAG <2A4D3263 50=02>
DIAG <2A4D3263 51=02>
DIAG <2A4D3263 52=12309907>
DIAG <2A4D3263 53=AB7D6E00>
DIAG <2A4D3263 54=0000>
DIAG <2A4D3263 55=0000>
DIAG <2A4D3263 56=004F8B00>
DIAG <2A4D3263 57=0144ED00>
DIAG <2A4D3263 58=0700>
DIAG <2A4D3263 59=001D>
DIAG <2A4D3263 60=00>
Unimodem Diagnostics/W32, version 1.1.0.1, compiled at Nov 20 2002
22:29:14
(c) 2000 Stanislav V. Mekhanoshin (rampitec@tu.spb.ru,
2:5030/172.9@fidonet)
----------------------------------------------------------------------------
Diag Command Specification rev.: 7.f
Call Setup Result code : Data Answering signal detected
Multi-media mode : DSVD, 1.2
DTE-DCE interface mode : Async data
TX/RX signal power level, -dBm : 5/12
Estimated noise level, -dBm : 26
TX/RX Negotiation : V.34/V.90 Issue 1 (asymmetric)
TX/RX Symbol Rate : 3200/8000
TX/RX Carrier frequency, Hz : 1920/0
TX data rate (Last/Init) : 31200/31200
RX data rate (Last/Init) : 44000/45333
Temporary carrier loss count : 0
Carrier Rate Re-neg count : 2
Retrains Requested/Granted : 0/0
Protocol/Compression : V.42 LAPM/V.42bis
Error control frame size, bytes: 128
Error control timeouts in TX : 0
Error control NAKs received : 80
TX/RX flow control : V.24 ckt 106/133 / V.24 ckt 106/133
TX/RX chars sent : 305174791/2877124096
TX/RX chars lost (data overrun): 0/0
TX/RX I-Frame count : 5212928/21294336
TX/RX I-Frame error count : 1792/29
Termination Cause : Cause Unidentified |
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