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COURIER HIGH SPEED MODEMS
Queries and Help Screens 6-3
I6 During a connection, the modem monitors and stores infor-
mation about link operations. When the call is ended, you
can request a diagnostic summary, as in the following
example. The duration of the last call or real time is
displayed depending on the Kn setting.
ati6
USRobotics Courier Dual Standard V.34 Fax Link Diagnostics...
Chars sent 0 Chars Received 0
Chars lost 0
Octets sent 0 Octets Received 0
Blocks sent 0 Blocks Received 0
Blocks resent 0
Retrains Requested 0 Retrains Granted 0
Line Reversals 0 Blers 0
Link Timeouts 0 Link Naks 0
Data Compression NONE
Equalization Long
Fallback Disabled
Last Call 00:00:00
Disconnect Reason is Keypress Abort
OK
Figure 6.3Sample Link Diagnostics Screen (ATI6)
For calls under data compression, the number of characters sent
may be less than the number of octets sent, due to buffering
operations. Line Reversals only apply to HST-mode operations,
when the modems switch the high and low speed channels. At
this time, online fallback is only reported Enabled in HST-mode.
Most terms used in the display are self-explanatory except for
the following:
Octets: Compressed data units. If the number of octets is
greater than the number of characters sent, the modems
probably used MNP5 compression on an already compressed
file, and the result was expanded data.
Line Reversals: The number of times HST-mode modems
switched the high and low speed channels.
Blers: Errors in data and protocol blocks. If there were many
block errors, your receiver may have experienced problems on
the line.
Blocks Resent: These represent blocks the remote modem
resent due to the previous category, Blers.