USRobotics V.34 - Manual (Page 74)

COURIER HIGH SPEED MODEMS
Queries and Help Screens 6-1
CHAPTER 6. QUERIES AND HELP SCREENS
USER INQUIRIES (In)
The Inquiry command has 11 options. The most commonly
used options display the following information:
ATI3 Call duration
ATI4 Current settings
ATI5 NVRAM settings
ATI6 Link diagnostics summary
I0 The modem returns a 4-digit product code. If you have a
problem and call U.S. Robotics' Technical Support Depart-
ment, you may be asked for this product code.
I1 The modem performs a checksum of its read-only memory
(ROM) and returns the result to the screen. This function is
used only in factory testing. The modem should always
read the same number.
I2 The modem performs a test of its random access memory
(RAM) and returns either the OK (0) or ERROR (4) result
code, followed by OK when the test is completed. You may
want to use this command as a checkpoint if the modem
appears to be malfunctioning.
I3 The modem returns the duration of the last call if set to K0.
It displays the actual time if set to K1. See the description of
the K
n command in Chapter 4.
I4 The modem displays its current configuration. Figure 6.1
on the following page is an example.