Sierra Wireless DART 200 CDPD Modem manual Key types, Spk

DART 200 CDPD Modem User’s Guide 3 CDPD Security Features

Table 3-1. Key types (cont.)

SPK	Prevents unauthorized changes to the modems operating
	parameters. These include selected S-Registers as well as
	modem IP Addresses. In addition, the use of selected AT
	commands, including several of the security management
	commands, is also controlled by this key. This key is enabled
	by the AT^P command. If entered incorrectly three times in a
	row, it will become BLOCKED.
	When the SPK is in the BLOCKED state, entering any SPK
	through the AT^P command causes a 30-second delay before
	the BLOCKED response is returned. This delay imposes a
	barrier to computer-generated attempts at finding the Master
	Key value by unauthorized users.
Master Key	Temporarily enables the SPK when it becomes BLOCKED
	allowing the BLOCKED status to be cleared. Temporary
	unblocking is performed by the AT^P command, and the
	BLOCKED status is permanently cleared by the AT^C
	command. The Master Key cannot become BLOCKED.
AT	The AT commands used to implement the security
Commands	management feature (*E, \P, ^F, *U, ^P, ^C) and the default
	keys are described in detail in Appendix F, DART AT
	Command Set.

PN1197-00 Revision 1.0 01/23/98 3-3