Northern UTA220/UTA220k manual Request Softload Product Version Information $Q, Command, Operation

Softload

	The password, stored in nonvolatile memory, consists of zero
	to eight alphanumeric digits. Leading zeros are significant. The
	password may also be disabled, preventing any softload
	operations except inquiries.
	By default, the softload password is set to null. It is
	recommended that the softload password be changed when
	initially configuring the unit in order to prevent accidental or
	unauthorized softload attempts. The softload password
	commands are listed in Table 13-4.
	Table 13-4: Softload Password Commands
Command	Operation
%P1?	Display softload password.
%P1 = x	Set softload password to x, where x is 0-8 alphanumeric
	digits.
%P1 = D	Disable the softload function.

Request Softload Product Version Information: $Q

The $Q command returns the product code, the version number of the active software, and the version number of the alternate software. It can provide a positive verification of the success of a softload operation, and indicates which software set is currently active.

A typical response to the $Q command might be:

PRODUCT NUMBER: 4563672

ACTIVE SOFTWARE: 1D

ALTERNATE SOFTWARE: 1B

If the alternate software set contained any software versions that were invalid, the word INVALID would appear instead of a version code. A software set that is invalid cannot become the active software set.

If the $Q command returns the ERROR message, the TA does not support the optional softload feature.

Note: Before initiating softload, configure both the local DTE host computer and the local TA for a hardware (out-of-band) flow control method (e.g. RTS/CTS). Do not use software flow control (XON/XOFF), since the softload software files contain XON/XOFF characters that would be misinterpreted as flow control characters.

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