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DIR10
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PCBATI6.ZIP
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PCBATI6.TXT
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1993-10-06
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3KB
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65 lines
AUTOMATED ANALYSIS
LINE NOISE (NODE %d)
**TOPTEXT
NOTE: This is an AUTOMATED message. During your last call, the following
phone line conditions were observed:
**
**RESENT
- Number of blocks that were RE-sent (%ld out of %ld).
Resending blocks causes slow transfers and sluggish keyboard response by
having to re-send data until it arrives intact. For instance, having to
resend %ld blocks of data means that %ld blocks were sent when only
%ld blocks were needed. Net result: a %d% reduction in throughput.
**
**RETRAINS
- Retrains Requested (%ld) and Retrains Granted (%ld).
These are indications that either your modem or our modem has detected
line noise and is attempting to change the speed of the connection in
order to get better throughput.
**
**MODEMERRORS
- Blers (%ld), Link Naks (%ld) and Link Timeouts (%ld).
These are indications of line noise and/or protocol level errors and have
the effect of slowing the data transfer process. These errors could also
occur when the two modems are not quite compatible with each other.
**
**FINALSPEED
- Initial connect speed (%ld) versus final speed (%ld/%ld).
If the final speed has dropped below the initial connect speed then a
retrain has been requested and granted. Connecting at high speed initially
does not guarantee that the speed will remain constant. A noisy line will
cause the modems to shift to a slower speed in order to attempt to increase
throughtput. However, shifting to a slower speed will definitely be
reflecting in any CPS rates experienced while transferring files.
**
**DISCONNECT
- %s
The only 'normal' disconnect reason is when DTR is dropped. In fact,
dropping DTR is the *only* method available to PCBoard to hang up the
phone since the '+++' method is disabled! So if you lost carrier it is
because one or the other modem decided to drop the connection. The
disconnect reason given will reflect that information.
**
**FINALTEXT
The above information was gathered automatically by the U.S. Robotics HST Dual
Standard modems which we have online. The information comes from the ATI6
report that these modems produce. The contents of the actual ATI6 report will
be included at the end of this message.
Remember that line noise still exists. Modems with error correction (MNP or
v.42) simply hide the line noise by correcting it before it reaches the
computer. The time it takes to correct those errors, however, is what causes
slowdowns and sluggish response times.
During your last connection, symptoms of line noise were detected. You may
have noticed slow transfers or sluggish response. When this occurs, your best
option may be to simply hang up and try your call again in hopes of a cleaner
connection the next time.