USRobotics V.34 user manual ⎯Sample Link Diagnostics Screen ATI6

COURIER HIGH SPEED MODEMS

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 6.3⎯Sample 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.

Queries and Help Screens 6-3