Specifications

About this Guide
Rev 7 May.12 Proprietary and Confidential 11
Escape sequence guard time
The AT escape sequence “+++” requires a guard time of 1.0 seconds before and
after it is used.
Result codes
Result codes are not shown in the command tables unless special conditions
apply. Generally the result code OK is returned when the command has been
executed. ERROR may be returned if parameters are out of range, and is
returned if the command is not recognized or is not permitted in the current state
or condition of the modem.
Terminology and acronyms
This document makes use of acronyms that are in common use in data
communications and cellular technology. Our Internet site provides a Glossary of
Terms and Acronyms (document number 2130891) that may be helpful in
understanding some acronyms and terminology used in this guide.
Current firmware versions
Versions
To determine your firmware revision:
• Enter the identification command
AT+GMR
The modem responds with version information for software, firmware, and
hardware.
The details following the revision number include Sierra Wireless information
on the specific build followed by the date and time of the build.
+GMR: … F/W VER: R1_0_0_…
Upgrading
If your modem firmware is an earlier version, you can acquire updated firmware
by contacting your account manager.
Document structure
This document includes a chapter covering Supported 27.007 AT commands, as
well as the proprietary commands listed in the tables below. Each table
corresponds to a specific chapter.