Standard (Hayes) Commands - Sierra Wireless AirLink ES440 User Manual

ALEOS 4.4.0 Software Configuration User Guide
Table C-7: Serial AT Commands (Continued)
Command
*UDPLAST
*USD
Table C-8: Standard (Hayes) AT Commands
Command
+++
&C
324
Description
Query or set the option to set S53 to the last accepted IP address through UDP auto
answer. This can be used in conjunction with MD3 so that when there is no UDP
session, new Ethernet host data will cause a connection to be restored to the last IP
accepted through UDP auto answer.
AT*UDPLAST? to query
AT*UDPLAST=n to set
•
n=0 — Does not change destination IP (default)
•
n=1 — Change destination IP to last received
Query or set the specified delay before sending the UDP packets out the serial port.
AT*USD? to query
AT*USD=n to set
•
n=0 — No UDP packet delay (default)
•
n=1 – 255 — Delay in 100ms units, from 100 ms to 25.5 sec.

Standard (Hayes) commands

The following table contains Hayes commands supported on AirLink devices.
Description
AT escape sequence (not preceded by AT)
If a serial terminal is in a data mode, typing this sequence on that serial terminal causes the
terminal to re-enter AT command mode. There must be an idle time on the serial port before
and after the sequence. The idle time is set by the value in S50.
After you type the AT escape sequence, the terminal remains in AT command mode for
15 seconds before it automatically leaves AT command mode and returns to the previous
data mode.
Note: The "+" is ASCII character 0x2B.
Note: The detection of this sequence is disabled if DAE=1.
Query or set Data Carrier Detect (DCD) mode.
DCD is a hardware signal that notifies the software that the device is communicating with
another device.
AT&C? to query
AT&Cn to set
•
n=0 — Always assert DCD
•
n=1 — Assert DCD enable when network is ready (default)
Note: Do not use an equal sign (=) when issuing the command.
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