Northern UTA220/UTA220k Type Ta.Sl, TA Power-Up Sequence, 1 PROM Error Messages, LCD Message

Softload

The TA software file contains an ASCII coded “header” which can be displayed to verify the software's product and version information before initiating the softload. On DOS based PCs, this can be accomplished with the “TYPE” command. For example, to view the header information of a file called TA.SL, enter:

TYPE TA.SL

A typical header might look like this:

METHOD: SOFTLOAD YGMS-1

PRODUCT: ISDN TA

BOARD ID: 4563672

CPU ID: 0

VERSION: 1CPT-D

TA Power-Up Sequence

	When the TA is powered up, it tries to execute the current
	active set. The active set is stored in nonvolatile memory and
	is determined by the last swap command.
	However, if the active set indicated by the nonvolatile memory
	selection is invalid, the TA will display a PROM ERROR
	message on the LCD and then attempt to execute the alternate
	set of software. This could occur if a softload session is aborted
	or a hardware failure occurs.
	If a SELECTED PROM INVALID message appears, the unit
	will still operate, but possibly with an incorrect software set.
	The error message will remain on the LCD for approximately
	three seconds.
	To clear the error, download the correct software, and then use
	the swap command to activate it. If this does not resolve the
	problem, the unit may require factory service.
	If a FATAL ERROR occurs, the unit cannot operate and
	must be serviced. PROM ERROR messages are shown in
	Table 13-1.
	Table 13-1:PROM Error Messages
LCD Message	Description
SELECTED	The selected PROM is invalid (blank or last softload session
PROM INVALID	failed). The TA is overriding the software selection and is
	executing from the alternate software set.
FATAL ERROR	The selected PROM is invalid, and the alternate software
PROM INVALID	set is also invalid. Normal operation is not possible.

13-2 UTA220/UTA220k