Sierra Wireless DART 200 CDPD Modem - Manual (Page 166)

DART 200 CDPD Modem User’s Guide F DART AT Command Set
Sierra Wireless, Inc. F-22
Table F-4. Commands beginning with asterisk (*) (cont.)
*P Ping Remote Host
Issues ICMP Echo Requests to a Remote Host and waits for a response. The wait time-out between pings
and the packet size s defined by the values in S-Registers 70 and 71. Ping runs continuously until stopped
by pressing the
RETURN key or until 20 consecutive time-outs occur, at which time the ping ceases and a
summary of ping statistics is displayed.
The default packet size is 68 bytes. The data portion is 10 times the value in S-Register 71 (6); the header
portion is fixed at 8 bytes. The default time-out between Pings is 10 seconds and is found in S-Register
70. Both of these registers can be altered if desired.
Format:
AT*Pn n = target IP address to ping. The form for this is n.n.n.n, for example,
AT*P155.197.21.101
AT*PS[n] [n] = dial directory index (see AT&Z command). If [n] is not specified the
address in slot 0 is used.
AT*P Use last address pinged. If none, an ERROR response is returned.
*R Automatic SLIP Mode
Enables the end-user to specify that the DART always enters SLIP mode following power on or modem
reset. It is provided to enable Winsock applications to be able to rely on the modem always being in SLIP
mode, particularly following a power off/on cycle.
The end-user needs to be aware that the modem will not be in command mode following power on if this
feature is active. If it is necessary to send AT commands to the modem at initial application startup, an
escape function must be performed (see &E or &D commands) before the modem can respond to AT
commands.
Bit 6 of S-Register 57 (value of 64) indicates that auto slip mode is active. A modem that has acquired a
CDPD channel (128), has Auto SLIP Mode Startup (64) active, and used the auto registration feature (32)
to get registered (1) shows a value of 225 in S-Register 57.
This command needs to be saved with the &W command to become a permanent setting. After setting
and saving, the command does not become active until the modem is power cycled or reset with the
AT-R command.
Format:
AT*R0 Auto SLIP disabled (default)
AT*R1 Auto SLIP enabled
Result codes:
OK Command accepted
ERROR Invalid command