3Com REMOTE ACCESS SYSTEM 1500, Management Manual

Page: 147 / 300

Obtaining Modem Call Information
145
Understanding Link Diagnostic Results
Link diagnostic result parameters are displayed by the ATI6 command.
Table 39 explains each parameter.
Table 39 Link Diagnostic Results
.
Result Indication
Octets Compressed characters; may be greater than the number of
characters sent due to buffering operations.
Blers Errors in data and protocol (non-data) blocks, but corrected by
ARQ (Error Control).
Link Timeouts Error correction protocol severed momentarily (during which no
data was transferred), but the protocol was able to recover.
Link NAKs Negative acknowledgments (one or more blocks).
Data
Compression The type of data compression negotiated for the call (V.42 bis or
MNP5) on NONE. A V.42
bis
response includes the size of the
dictionary and the maximum string length used (for example:
2048/32).
Equalization
Long/Short The status of S15 bit 0; Long if bit 0=0,Short if bit 0=1
Fallback
Enabled/Disabled Whether or not the modems negotiated online fallback during
the connection sequence.
Protocol The error control protocol negotiated (LAPM, MNP, NONE) or
SYNC for a synchronous call.
Speed The last rates at which the receiver/transmitter were operating
before disconnecting.