Total Control MP/16, Operator'S Manual

Page: 128 / 182

D-4 AT Command Reference
I5 Display settings stored in the modem’s NVRAM. If your
modem connects to a modem that has Link Security and local
access enabled, you cannot view the stored phone numbers.
I6 Display link diagnostics . The modem displays a link
diagnostic summary of the previous call, including
characters transferred, data blocks retransmitted under error
control, and other information. For an explanation of the
results displayed for this inquiry, see
Link Diagnostic Results
on the following page.
I7 Display product configuration. The modem displays its
product configuration, useful to U.S. Robotics’ Technical
Support staff in diagnosing problems.
I8 Reserved.
I9 Display standard Feature Group B settings.
I10 View Link Security Account status (see Link Security section
in Chapter 3).
I11 Advanced link di agnostics. Used for debugging purposes.
I12 Reserved
I13 MNP10 diagnostics
I14 V.42ETC diagnostics
Link Diagnostic Results
Some results listed in the ATI6 display are not self-explanatory and
have the following meanings:
Octets: Compressed characters; may be greater than the number of
characters sent due to buffering operations.
Line Reversals: The number of times modem in HST mode switched
the high and low speed channels.
Blers:
Errors in protocol (non-data) blocks.
Link Timeouts:
Protocol operations, not the retry time-out; used in
internal testing.
Link Naks:
Negative acknowledgments (one or more blocks).
Data Compression:
Indicates the type of data com pression
negotiated for the call (V42BIS or MNP5) or NONE. A
V42BIS response includes the size of the dictionary and the
maximum string length used, e.g., 2048/32.