DART 200 CDPD Modem User’s Guide

2 Installation and Setup

Table 2-2. Registration failure troubleshooting (cont.)

Condition

Result

Solution

 

Code

 

 

 

 

Authentication

 

credentials to be reset. Trying to register a

(credentials)

 

modem after doing this will cause a

problem (cont.)

 

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-Zcommand (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

Not

This condition is only possible if you are

problem

applicable

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.

 

 

 

PN1197-00 Revision 1.0

2-19

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Sierra Wireless DART 200 CDPD Modem manual Dart 200 Cdpd Modem User’s Guide Installation and Setup