Sierra Wireless DART 200, Руководство пользователя, Страница: 43 / 206

DART 200 CDPD Modem User’s Guide 2 Installation and Setup
PN1197-00 Revision 1.0 2-19
Table 2-2. Registration failure troubleshooting (cont.)
Condition Result
Code Solution
Authentication
(credentials)
problem (cont.) credentials to be reset. Trying to register a
modem after doing this will cause a
credentials error because the reset values in
the modem do not match the values the
MDIS has for that IP Address from prior
usage.
This problem is not likely when you are
initially registering a new modem, unless
the IP Address was previously used in your
organization. If a credentials problem is
indicated, contact the carrier to have the
credentials for the IP Address reset.
If you suspect that this occurred, use the
AT-Z command (in service provider
mode) to view the actual credentials. If the
displayed credentials are zero, call the
carrier to get the IP Address reset.
Flow control
problem Not
applicable This condition is only possible if you are
using manual registration
(AT\R1) instead
of automatic registration. If, after you key
AT\R1 and press
ENTER
, the cursor returns
to the A of the AT and the modem does not
return an OK or an ERROR within the
time-out period (S-Register 13) you likely
have this problem.
Flow control is only applied when the
modem is in online mode or is interacting
with the network in command mode (as it
is when trying to register). Even if the flow
control is set improperly, or has a cable
problem that impacts flow control, you will
not notice it until you try to register. The
flow control setting defaults to hardware
flow control, indicated by
\Q2 in the
modem profile, and this should match the
COM port setting on your PC’s terminal
emulator program. If the settings match try
changing them both to no flow control
(
\Q0 ) on the DART. If registration now
works then a broken or missing pin, faulty
connection, or broken or missing RTS or
CTS wire is the likely source of the
problem.