Sierra Wireless DART 200 CDPD Modem - Manual (Page 175)

DART 200 CDPD Modem User’s Guide F DART AT Command Set
PN1197-00 Revision 1.0 F-31
Table F-7. Service Provider commands beginning with dash (^) (cont.)
-Z Display Current Authentication Credentials
A diagnostic aid when modem registration fails after it has previously been able to successfully
register. It shows the current values for the ASN (sequential) and ARN (random) authentication
numbers.
Zero values imply that the user has inadvertently reset the modem’s credentials, usually by reloading
the IP Address.
Non-zero values imply that the carrier has for some reason reset the IP Address being used, or that the
modem and MDIS have gotten out of synch due to registration protocol issues under marginal
coverage conditions (quite unlikely). The credentials must be forced to match. In the former case, the
carrier must be asked to rest the IP address. In the latter case, both the user and the carrier must reset
the IP Address
Format:
AT-Z? Display current authentication credentials
Result codes:
ERROR Invalid Argument
NOT ENABLED Modem is not in service provider mode