Sierra Wireless DART 200, User Manual

Page: 75 / 206

DART 200 CDPD Modem User’s Guide 5 DART Supported Protocols
PN1197-00 Revision 1.0 5-21
Host TCP setup
The host (client) modem is set up to support polling of remote devices by
the host computer. The host uses flow control and the data being sent is
binary, not character data. The polling function does not require the TCP
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 include a software
stack (replacing the modem stack) to operate with the CDPD network.
In Table 5-4, only the line items marked with an R (required) or an O
(optional) are changed from the default (D).
Table 5-4. Host TCP setup
AT Command Req Opt Def Description
AT^Annn.nnn.nnn.
nnn
R Input IP Address (if not already done)
AT\N[1,2]
R Side Preference (get from carrier)
AT\J0
D Use default - No channel access
restrictions
AT\R4
R Auto Registration at Power On
ATS13=0
R
With AT\R4 sets Continuous Automatic
Registration
AT\O0
R
PAD mode is required for TCP.
AT*A0
D Use default - No server required
AT*L2100
D Use default - Listen on port 2100
ATE0
O
No command mode character echo
ATV0
O Use terse result codes
ATQ0
D Use default - Result codes are sent to the
host
ATF1
D Use default - Do not echo transmitted
data to the host
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
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\Q2
D Use default - Most PC’s use flow
control
AT\T1
D Timed data forwarding - Always use
with binary data
AT*B0 D Use default - Does not apply to TCP
AT*C1
D Use default - Does not apply to TCP
AT*G1
D Use default - Does not apply to TCP