Sierra Wireless DART 200, User Manual

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DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols
Sierra Wireless, Inc. 5-12
Table 5-1. Remote UDP setup (cont.)
AT Command Req Opt Def Description
ATE0
O No command mode character echo
ATV0
O
Use terse result codes
ATQ0
D Use default - Result codes are sent to
the RTU
ATF1
D Use default - Do not echo transmitted
data to the RTU
ATX1
D Use default - Extended result codes
AT&C1
D Use default - DCD follows state of
the connection
AT&D0 D Use default - You may want to
consider using DTR to escape if RTU
supports it
AT&E2
O Filter escape sequence from output
AT&S0
D Use default - DSR is always active
AT\F3
D Use default - Applies only if \M1
specified
AT\M0
D Use default - Do not recognize data
forwarding characters
AT\Q0
O Most RTUs do not use flow control
AT\T1
D Timed data forwarding - Always use
with binary data
AT*B0 D Use default - Many CDPD Carriers
have not implemented Broadcast.
AT*C1
D Use default - Does not apply to UDP
AT*G1
D Use default - Does not apply to UDP
AT*K0
D Use default - Does not apply to UDP
AT*R0
D Use default - Does not apply to UDP
AT*T0
D Use default - Does not apply to UDP
Host UDP setup
The host (client) modem is set up to support polling of remote devices by
the host computer. The specific host uses flow control and the data being
sent is binary, not character, data. The polling function does not require
the UDP server, but requires flow control, and timed data forwarding
because of the binary data.
Use this setup only for bench testing or a limited use trial. A production
application uses a leased line, frame relay, or Internet connection
between the host and the MDIS instead of a modem. In the latter
scenario, the production host application needs to interface with a
software stack (replacing the modem stack to operate with the CDPD
network).
In Table 5-2, only the line items marked with an R or an O are changed
from the default (D). After making changes, save them with an AT&W.